WO1996014999A2 - Method of applying a patterned coating - Google Patents
Method of applying a patterned coating Download PDFInfo
- Publication number
- WO1996014999A2 WO1996014999A2 PCT/GB1995/002695 GB9502695W WO9614999A2 WO 1996014999 A2 WO1996014999 A2 WO 1996014999A2 GB 9502695 W GB9502695 W GB 9502695W WO 9614999 A2 WO9614999 A2 WO 9614999A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mixture
- hardener
- epoxy resin
- resin
- bisphenol
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 title claims abstract description 8
- 238000000576 coating method Methods 0.000 title claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 29
- 239000004848 polyfunctional curative Substances 0.000 claims abstract description 19
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229930185605 Bisphenol Natural products 0.000 claims abstract description 4
- 229920001577 copolymer Polymers 0.000 claims abstract description 4
- 239000013618 particulate matter Substances 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 239000011347 resin Substances 0.000 claims description 25
- 229920005989 resin Polymers 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000004576 sand Substances 0.000 claims description 11
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- DZIHTWJGPDVSGE-UHFFFAOYSA-N 4-[(4-aminocyclohexyl)methyl]cyclohexan-1-amine Chemical compound C1CC(N)CCC1CC1CCC(N)CC1 DZIHTWJGPDVSGE-UHFFFAOYSA-N 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims description 2
- 239000011236 particulate material Substances 0.000 abstract description 7
- 239000004567 concrete Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000002118 epoxides Chemical class 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- SIXWIUJQBBANGK-UHFFFAOYSA-N 4-(4-fluorophenyl)-1h-pyrazol-5-amine Chemical compound N1N=CC(C=2C=CC(F)=CC=2)=C1N SIXWIUJQBBANGK-UHFFFAOYSA-N 0.000 description 1
- LCFVJGUPQDGYKZ-UHFFFAOYSA-N Bisphenol A diglycidyl ether Chemical compound C=1C=C(OCC2OC2)C=CC=1C(C)(C)C(C=C1)=CC=C1OCC1CO1 LCFVJGUPQDGYKZ-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229960004217 benzyl alcohol Drugs 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- XUCHXOAWJMEFLF-UHFFFAOYSA-N bisphenol F diglycidyl ether Chemical compound C1OC1COC(C=C1)=CC=C1CC(C=C1)=CC=C1OCC1CO1 XUCHXOAWJMEFLF-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- ZUFQODAHGAHPFQ-UHFFFAOYSA-N pyridoxine hydrochloride Chemical compound Cl.CC1=NC=C(CO)C(CO)=C1O ZUFQODAHGAHPFQ-UHFFFAOYSA-N 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000001044 red dye Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F9/00—Designs imitating natural patterns
- B44F9/04—Designs imitating natural patterns of stone surfaces, e.g. marble
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/4853—Epoxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/62—Coating or impregnation with organic materials
- C04B41/63—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1438—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing oxygen
- C08G59/145—Compounds containing one epoxy group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/226—Mixtures of di-epoxy compounds
Definitions
- This invention relates to composite materials for example for use in building.
- the invention further relates to methods of laying composite material.
- a method of laying a coating on a sub base comprising the steps of: i applying a mixture of epoxy resin, hardener and particulate material to the rigid sub base, ii) imprinting a pattern on the mixture by pressing a textured sheet into the mixture.
- the invention is applied to a concrete sub base but other rigid solid and clean sub bases may be used.
- Old concrete may be a suitable base. Any grease, oil, paint or stain should be removed with a cleaning agent preferably by power washing. It is important that an alkaline film is not left on the surface It may be necessary or desirable to rinse thoroughly with clean water after cleaning
- Another preferred preparation especially for heavily contaminated concrete is hot compressed air burning of the sub base especially if the tack primer coat to be described hereinafter is applied while the concrete is still warm Sand blasting and vacuum shot blasting each provide especially good preparation since they are dry processes which physically remove the surface of the concrete leaving a clean textured finish
- sub-bases For example asphalt or tarmacadam can be power washed and then sealed for example with a water based sealer
- the sub-base is rendered non-porous but this may be difficult to achieve with a tarmacadam or asphalt sub-base -
- tack primer as RODEX 5 TACK PRIMER a twin pack product consisting of -resm and hardener components If necessary or desired the base resin pack and base hardener may be thinned with up to 5% of Xylene or Ethoxal
- the tack primer may be applied by sheepskin roller in relatively small areas of say 5m**- per time
- the topcoat is then prepared For example 25kg of kiln dried silica sand is placed into a mixing container 1 3 litres of Bisphenol A diglycidyl ether, Bisphenol F diglycidyl ether resin are placed in a mixing bucket 0 78 kg of hardener comprising cycloaliphatic amine, pigment and diisooctylphthalate plasticiser is stirred into the resin composition The resin/hardener mixture is then stirred into the sand until homogeneous This quantity should be sufficient to coat about 2 5m-** of primed base
- topcoat Small portions of topcoat are placed on the sub-base about 0 75 m apart The top coat is then spread out to a depth of about 5mm with a smooth, level finish. The top coat is allowed to cure for about 45 minutes at ambient temperature.
- a release coat of microfine hydrophobic powered silica is then spread over the partially cured top coat.
- a release sheet for example of polyethylene or silicone may be used.
- a flexible mat bearing the patter to be imprinted as projections on the bottom surface is placed on the release coat.
- the pattern may simulate stone blocks.
- the maximum depth of the projections should be slightly less than the thickness of the top coat. For example when the top coat is laid 5mm thick the projections should be no more than 4mm.
- the mat is pressed firmly into the resin for example by foot pressure. Further mats are placed into position in a similar manner. In corners and confined areas a small section of mat may be mounted on a handle and pressed into position. It is not essential for all the top coat to be printed with the same pattern. For example a central area may be imprinted with a riven stone fan pattern and the edges provided with a running bond border.
- the mats are generally left in situ until the top coat is cured and then removed.
- a preferred resin component comprises a liquid epoxy resin containing glycidylether C-13 and C-15, a modified liquid of Bisphenol A/F Epichlorohydrin resin comprising
- a preferred hardener comprises a modified cycloaliphatic amine containing benzyl alcohol less than 45% which contains 4,4'-methylenebis(cyclohexanamine) polymer.
- a composition obtained by mixing a) A liquid epoxy resin comprising i) glycidyl ether C- 13 and C- 15 and ii) 4,4'-Isopropylinediphenol-epichlorohydrin and Bisphenol F- epichlorohydrin copolymer, b) a curing agent comprising 4,4'-methyIenebis (cyclohexanamine)polymer and optionally benzylalcohol, and c) particulate matter
- the relative amounts of resin and particulate material are not absolutely critical. If insufficient resin is present the mixture will not bind together Little extra benefit is gained by using excess resin and if too much is used the natural appearance of the particulate material may be impaired.
- the volume ratio of resin to particulate material is in the range of 1 :3 to 1 : 10 more preferably 1 :4 to 1:7.5.
- the resin component can be varied: but preferably comprise a reaction product of poiyglycidyl ethers of bisphenol A and/or bisphenol F with elpichlorohydrin.
- the resin component need not be modified. It may, if desired, be dissolved in a solvent.
- the resin component can contain reactive and/or non-reactive diluents.
- Preferred epoxide equivalent weights for liquid resins are in the range 170 to 250 and for solids 450 to 600 or 2000 to 4000.
- Epoxide content (in molkg"*) for liquid resins is preferably in the range 3.5 to 6.0 and for solids 1.9 to 2.30.
- Preferred hardeners include aliphatic polyamines, cycloaliphatic polyamines, polyaminoamines, polyamino imidazoles and modified aromatic polyamines. the hardeners can be used alone or in combination. Accelerating catalysts may be added.
- the particulate material may comprise kiln dried silica sand, aggregate, stone or synthetic granules.
- the sub base comprises a sheet or board on which the composite is laid. The board is then transported to the site.
- composition is mixing a tack primer is applied to a sub-base for example with a sheepskin roller or by spraying.
- the mixer contents are placed onto the prepared board and screed to a depth of about 3mm to 4 mm.
- a mixture of powdered colours, hardeners and/or release agents are optionally applied for example by sieving or hand casting.
- a release sheet such as of polyethylene or silicone is applied to the surface.
- a textured mat is pressed into place Almost any texture may be used for example roof tile or slate, stone or brick.
- the mat and release sheet are removed and the mixture allowed to cure preferably in a temperature controlled room. Once cured any excess powder can be washed of, the product allowed to dry and a sealer coat applied.
- the board with the cured composition is then transported to the site
- the resin mixture comprised 1 404kg of resin, 0 842kg of hardener and 02251 water This modification was particularly suitable for roof tiles
- Another suitable particulate mate ⁇ al comprises 18 kg kiln d ⁇ ed sand 10 kg graded filler and 0 1 kg pigment powder
- the coating is formed and allowed to cure and then applied to a substrate
- Preferred uses include forming slips of b ⁇ ck coloured mate ⁇ al with say red dye or b ⁇ ck dust and a surface coat of sand
- the slips are formed to be about 3 mm thick but of size corresponding to the exposed face of a brick in a wall
- the bricks can be abraded to remove loose material and the slips can then be adhered to the bricks If desired the joints can then be repomted This allows a b ⁇ ck wall or part thereof to be refaced without extensive cutting back If desired the slips could be adhered to a surface not of brickwork to simulate brick
- Other uses include forming tiles or paviours
- a fluorescent dye such as fiuorescin sodium is incorporated in the composition Slips of this composition can be applied to kerbstones and thus make them more visible Typically application points could be danger areas such as bends or crossings
- a kerb edge can be made by mixing a twin pack composition of which part A comp ⁇ ses 1 3 litres resin and 12 5 kg sand and part B 0 78 litre hardener and 12 5 kg sand Either or both pans contain colouring
- the parts are mixed on site for example using a paddle attachment on an elect ⁇ c drill until a uniform colour is achieved Tack p ⁇ mer is applied to the existing kerb edges
- a form work is constructed around the kerb and the product trowelled into place The form work can be removed after about an hour and edging sealed When fully mixed the product is used as a conventional rendering
- composition can also be used to make a kitchen work surface Packs
- a tack p ⁇ mer comprising 15% resin to hardener is applied with a paintbrush or roller
- composition is spread for example at a thickness of 1 to 3 mm onto the tack primer and allowed to cure Once cured sealer or varnish is applied if desired
- the composition of the invention can be used as a jointing and bedding material or adhesive for example for the slips of the invention
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Emergency Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
A method of laying a coating on a sub base comprising the steps of: (i) applying a mixture of epoxy resin, hardener and particulate material to the rigid sub base; (ii) imprinting a pattern on the mixture by pressing a textured sheet into the mixture. A composition obtained by mixing: a) composition obtained by mixing: (i) glycidyl ether C-13 and C-15 and (ii) 4,41-isopropylinediphenol-epichlorohydrin and bisphenol F-epichlorohydrin copolymer; b) a curing agent and c) particulate matter.
Description
METHOD OF APPLYING A PATTERNED COATING
This invention relates to composite materials for example for use in building. The invention further relates to methods of laying composite material.
Attempts hitherto make a composite material comprising epoxy resin and inorganic particulate material for use in building have generally resulted in a product having a bloom which makes it unsatisfactory.
According to any aspect of the invention there is provided a method of laying a coating on a sub base comprising the steps of: i applying a mixture of epoxy resin, hardener and particulate material to the rigid sub base, ii) imprinting a pattern on the mixture by pressing a textured sheet into the mixture.
Embodiments of the invention will be described by way of non limiting example.
Preferably the invention is applied to a concrete sub base but other rigid solid and clean sub bases may be used.
Where applied to new concrete it is desirable to allow the concrete to age for at least 28 days. Where efflorescence is present longer ageing is desirable to prevent significant reduction in bond strength. Some concrete is treated with wax based curing compounds. These should be removed for example by sand blasting or steam cleaning with strongly alkaline cleaners. If the new concrete has been exposed to contamination other than by foot traffic, cleaning to remove grease oil or paint is recommended. It is particularly preferred that power washing followed by a clean water rinse be adopted.
Old concrete may be a suitable base. Any grease, oil, paint or stain should be removed with a cleaning agent preferably by power washing. It is important
that an alkaline film is not left on the surface It may be necessary or desirable to rinse thoroughly with clean water after cleaning Another preferred preparation especially for heavily contaminated concrete is hot compressed air burning of the sub base especially if the tack primer coat to be described hereinafter is applied while the concrete is still warm Sand blasting and vacuum shot blasting each provide especially good preparation since they are dry processes which physically remove the surface of the concrete leaving a clean textured finish
Other materials may be suitable as sub-bases For example asphalt or tarmacadam can be power washed and then sealed for example with a water based sealer Preferably the sub-base is rendered non-porous but this may be difficult to achieve with a tarmacadam or asphalt sub-base -
The prepared sub-base is then coated with tack primer A preferred tack primer as RODEX 5 TACK PRIMER a twin pack product consisting of -resm and hardener components If necessary or desired the base resin pack and base hardener may be thinned with up to 5% of Xylene or Ethoxal The tack primer may be applied by sheepskin roller in relatively small areas of say 5m**- per time
The topcoat is then prepared For example 25kg of kiln dried silica sand is placed into a mixing container 1 3 litres of Bisphenol A diglycidyl ether, Bisphenol F diglycidyl ether resin are placed in a mixing bucket 0 78 kg of hardener comprising cycloaliphatic amine, pigment and diisooctylphthalate plasticiser is stirred into the resin composition The resin/hardener mixture is then stirred into the sand until homogeneous This quantity should be sufficient to coat about 2 5m-** of primed base
Small portions of topcoat are placed on the sub-base about 0 75 m apart The top coat is then spread out to a depth of about 5mm with a smooth, level
finish. The top coat is allowed to cure for about 45 minutes at ambient temperature.
A release coat of microfine hydrophobic powered silica is then spread over the partially cured top coat. Alternatively or additionally a release sheet for example of polyethylene or silicone may be used. A flexible mat bearing the patter to be imprinted as projections on the bottom surface is placed on the release coat. The pattern may simulate stone blocks. The maximum depth of the projections should be slightly less than the thickness of the top coat. For example when the top coat is laid 5mm thick the projections should be no more than 4mm. The mat is pressed firmly into the resin for example by foot pressure. Further mats are placed into position in a similar manner. In corners and confined areas a small section of mat may be mounted on a handle and pressed into position. It is not essential for all the top coat to be printed with the same pattern. For example a central area may be imprinted with a riven stone fan pattern and the edges provided with a running bond border.
The mats are generally left in situ until the top coat is cured and then removed.
By using selected resins the tendency for the composite to show a white surface blush is markedly reduced. Thus a preferred resin component comprises a liquid epoxy resin containing glycidylether C-13 and C-15, a modified liquid of Bisphenol A/F Epichlorohydrin resin comprising
4,4'-Isopropylinediphenol-Epichlorohydrin 35-50%
Bisphenol F-Epichlorohydrin Copolymer 35-50%
A preferred hardener comprises a modified cycloaliphatic amine containing benzyl alcohol less than 45% which contains 4,4'-methylenebis(cyclohexanamine) polymer.
Thus according to the invention there is also provided a composition obtained by mixing a) A liquid epoxy resin comprising i) glycidyl ether C- 13 and C- 15 and ii) 4,4'-Isopropylinediphenol-epichlorohydrin and Bisphenol F- epichlorohydrin copolymer, b) a curing agent comprising 4,4'-methyIenebis (cyclohexanamine)polymer and optionally benzylalcohol, and c) particulate matter
The relative amounts of resin and particulate material are not absolutely critical. If insufficient resin is present the mixture will not bind together Little extra benefit is gained by using excess resin and if too much is used the natural appearance of the particulate material may be impaired. Preferably the volume ratio of resin to particulate material is in the range of 1 :3 to 1 : 10 more preferably 1 :4 to 1:7.5.
The resin component can be varied: but preferably comprise a reaction product of poiyglycidyl ethers of bisphenol A and/or bisphenol F with elpichlorohydrin. The resin component need not be modified. It may, if desired, be dissolved in a solvent. Optionally the resin component can contain reactive and/or non-reactive diluents. Preferred epoxide equivalent weights for liquid resins are in the range 170 to 250 and for solids 450 to 600 or 2000 to 4000. Epoxide content (in molkg"*) for liquid resins is preferably in the range 3.5 to 6.0 and for solids 1.9 to 2.30.
Preferred hardeners include aliphatic polyamines, cycloaliphatic polyamines, polyaminoamines, polyamino imidazoles and modified aromatic polyamines. the
hardeners can be used alone or in combination. Accelerating catalysts may be added.
The particulate material may comprise kiln dried silica sand, aggregate, stone or synthetic granules.
Upto about 35% by volume based on the curing agent and resin of the product of water can be added. Preferred amounts are 5 to 20%
In some embodiments of the invention the sub base comprises a sheet or board on which the composite is laid. The board is then transported to the site.
For example
1.31 of the resin described above is mixed with 0.781 of the hardener described above. The resin and hardener are added to a freefall mixer with 20 kg kiln dried sand, 5 kg filler and 100 g pigment powder.
While the composition is mixing a tack primer is applied to a sub-base for example with a sheepskin roller or by spraying.
The mixer contents are placed onto the prepared board and screed to a depth of about 3mm to 4 mm.
A mixture of powdered colours, hardeners and/or release agents are optionally applied for example by sieving or hand casting.
A release sheet such as of polyethylene or silicone is applied to the surface. A textured mat is pressed into place Almost any texture may be used for example roof tile or slate, stone or brick. The mat and release sheet are removed and the mixture allowed to cure preferably in a temperature controlled room. Once cured any excess powder can be washed of, the product allowed to dry and a sealer coat applied. The board with the cured composition is then transported to the site
In modifications of the above process the resin mixture comprised 1 404kg of resin, 0 842kg of hardener and 02251 water This modification was particularly suitable for roof tiles
Another suitable particulate mateπal comprises 18 kg kiln dπed sand 10 kg graded filler and 0 1 kg pigment powder
In other embodiments of the invention the coating is formed and allowed to cure and then applied to a substrate Preferred uses include forming slips of bπck coloured mateπal with say red dye or bπck dust and a surface coat of sand The slips are formed to be about 3 mm thick but of size corresponding to the exposed face of a brick in a wall The bricks can be abraded to remove loose material and the slips can then be adhered to the bricks If desired the joints can then be repomted This allows a bπck wall or part thereof to be refaced without extensive cutting back If desired the slips could be adhered to a surface not of brickwork to simulate brick Other uses include forming tiles or paviours
In a preferred embodiment of the invention a fluorescent dye, such as fiuorescin sodium is incorporated in the composition Slips of this composition can be applied to kerbstones and thus make them more visible Typically application points could be danger areas such as bends or crossings
A kerb edge can be made by mixing a twin pack composition of which part A compπses 1 3 litres resin and 12 5 kg sand and part B 0 78 litre hardener and 12 5 kg sand Either or both pans contain colouring The parts are mixed on site for example using a paddle attachment on an electπc drill until a uniform colour is achieved Tack pπmer is applied to the existing kerb edges A form work is constructed around the kerb and the product trowelled into place The form work can be removed after about an hour and edging sealed
When fully mixed the product is used as a conventional rendering
The composition can also be used to make a kitchen work surface Packs
A and B below are mixed until a uniform colour is achieved Pack A Pack B
0 260 kg resin 0 156 cuπng agent
0 300 kg kiln dried sand 0 300 kg kiln dried sand
0 200 kg fine graded filler 0 200 kg fine graded filler
A tack pπmer comprising 15% resin to hardener is applied with a paintbrush or roller
The composition is spread for example at a thickness of 1 to 3 mm onto the tack primer and allowed to cure Once cured sealer or varnish is applied if desired The composition of the invention can be used as a jointing and bedding material or adhesive for example for the slips of the invention
Claims
1. A method of laying a coating on a sub base comprising the steps of: i applying a mixture of epoxy resin, hardener and paniculate material to the rigid sub base, ii imprinting a pattern on the mixture by pressing a textured sheet into the mixture.
2. A method as claimed in Claim 1 wherein the epoxy resin comprises diglycidyl ethers of Bisphenol A and Bisphenol F
3 A method as claimed in Claim 1 or Claim 2 wherein the paniculate material is silica sand.
4. A method as claimed in any one of the preceding claims wherein the hardener is a cycloaliphatic amine.
5. A method as claimed in any one of the preceding claims wherein the textured sheet is flexible.
6 A method as claimed in any one of the preceding claims wherein an epoxy resin/hardener tack coat is applied to the surface prior to application of the mixture a resin hardener and particulate matter.
7 A method as claimed in any one of the preceding claims wherein a release coat is applied to the mixture prior to imprinting.
8. A method of laying a coating on a sub base substantially as described herein.
9. A coating laid by a process as claimed in any one of the preceding claims.
10. A composition obtained by mixing a) a liquid epoxy resin comprising a) A liquid epoxy resin comprising i) glycidyl ether C-13 and C-15 and ii) 4,4'-Isopropylinediphenol-epichlorohydrin and Bisphenol F- epichlorohydrin copolymer, b) a curing agent, and c) paniculate matter, and optionally d) colorant
1 1 A composition as claimed in Claim 10 wherein the curing agent comprises 4,4'-methylenebis(cyclohexanamine)polymer and optionally benzvlalcohol.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU38757/95A AU3875795A (en) | 1994-11-16 | 1995-11-16 | Method of applying a patterned coating |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9423126.3 | 1994-11-16 | ||
GB9423126A GB9423126D0 (en) | 1994-11-16 | 1994-11-16 | Artificial stone |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1996014999A2 true WO1996014999A2 (en) | 1996-05-23 |
WO1996014999A3 WO1996014999A3 (en) | 1996-07-04 |
Family
ID=10764500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1995/002695 WO1996014999A2 (en) | 1994-11-16 | 1995-11-16 | Method of applying a patterned coating |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3875795A (en) |
GB (1) | GB9423126D0 (en) |
WO (1) | WO1996014999A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001094275A3 (en) * | 2000-06-07 | 2002-07-18 | Ceralac Gmbh | Method for coating and printing ceramic or glass-type substrates |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4031282A (en) * | 1972-07-05 | 1977-06-21 | The Burns & Russell Company | Simulated traditional sand-finished masonry |
US4877656A (en) * | 1986-11-06 | 1989-10-31 | Academy Of Applied Science, Inc. | Method of fabricating simulated stone surfaces and improved simulated stone product |
DE3825754A1 (en) * | 1988-07-29 | 1990-02-01 | Huels Chemische Werke Ag | AQUEOUS TWO-COMPONENT SYSTEMS BASED ON EPOXY AND DIAMINES |
US5167991A (en) * | 1991-05-13 | 1992-12-01 | Michael Lowe | Method for producing a replicated stone surface |
-
1994
- 1994-11-16 GB GB9423126A patent/GB9423126D0/en active Pending
-
1995
- 1995-11-16 WO PCT/GB1995/002695 patent/WO1996014999A2/en active Application Filing
- 1995-11-16 AU AU38757/95A patent/AU3875795A/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001094275A3 (en) * | 2000-06-07 | 2002-07-18 | Ceralac Gmbh | Method for coating and printing ceramic or glass-type substrates |
Also Published As
Publication number | Publication date |
---|---|
WO1996014999A3 (en) | 1996-07-04 |
GB9423126D0 (en) | 1995-01-04 |
AU3875795A (en) | 1996-06-06 |
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