JPH02112478A - Method for controlled easy finishing process of a textile material - Google Patents

Abstract

PURPOSE: To apply non-formalin processing comparable to conventional processing and finishing effect and retaining high whiteness to a fiber by treating a woven fabric composing of a cellulosic fiber with an aqueous solution containing a specific processing and finishing agent, a catalyst and an optical reflecting body. CONSTITUTION: A woven fabric composed of a cellulosic fiber is treated with an aqueous solution of a processing and finishing agent containing (A) a processing agent represented by formula I [R<1> and R<2> are each H or a 1-3C alkyl [either one of R<1> and R<2> is a 1-3C alkyl); R<3> and R<4> are each H or a 1-4C alkyl], (B) zinc hydrofluorate as crosslinking catalyst and (C) 0.01-1 wt.% optical reflecting body represented by formula II and/or formula III to attain crease resistance and shrink resistance comparable to finishing and processing effect by conventional urea-glyoxal-formaldehyde and improve and retain high whiteness.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an easy-to-manage finishing method for textile materials.

[Prior Art] In order to provide textile materials made of cellulose fibers or containing cellulose fibers mixed with other fibers with shrink-proof and wrinkle-proof properties that do not come off even after frequent washing, so-called easy-to-manage materials are used. The finishing process is applied to the fabric. Highly effective finishing agents include, in particular, urea-glyoxal-formaldehyde condensation products. Easy-to-control finishing can be achieved by, for example, impregnating the textile in an aqueous solution containing dissolved urea-glyoxal-formaldehyde condensation product and a catalyst such as magnesium chloride, drying the textile and then fixing it. This crosslinks the condensation products with each other and with the cellulose fibers of the textile article. Although good finishing effects are obtained with condensation products based on urea, glyoxal and formaldehyde, the separation of the formaldehyde associated with the use of this product, especially during the finishing process, is a disadvantage. .

A method for producing formaldehyde-free finishing agents and their use for the finishing of cellulose-containing fabrics is known from EP 0 036 076. In the specification of the same publication, as a finishing agent, 4.5
- Derivatives of dihydroxyethylene urea have been described. This is an acidic catalyst, preferably magnesium chloride,
is fixed to the textile material at a temperature of 130-210°C.

For example, compounds such as N,N'-dimethyl-4,5-dihydroquineethyleneurea or N,N'-dimethyl-45=dimethoxyethyleneurea do not produce appreciable finishing effects. Moreover, strong yellowing is observed in cellulose-containing fabrics finished with high concentrations of these compounds.

[Problem to be Solved by the Invention] The problem of the present invention is to add a finishing agent that does not contain formaldehyde to a textile material consisting of cellulose fibers or containing cellulose fibers mixed with other fibers. To provide an easy-to-manage finishing method for textile materials that maintains a high degree of whiteness in finished textile products and achieves finishing effects comparable to those of formaldehyde-containing finishing agents in terms of shrink and wrinkle resistance. That's true.

[Means for Solving the Problems] According to the present invention, the above problems are solved by the following method.

That is, the present invention provides for treating textile materials consisting of cellulose fibers or containing cellulose fibers mixed with other fibers with an aqueous dye containing a finishing agent and a catalyst for crosslinking this finishing agent. Impregnated with liquid (Flotte),
A method for the controllable finishing of textile materials by drying and fixing the impregnated textile material, comprising: (a) using as a finishing agent a compound of formula (I), where R1 and R2 are Represents a hydrogen atom or a CI-C3 alkyl group.However, at least one of R1 and R2 represents an 01-C, alkyl group.R1 and R4 represent a hydrogen atom or a Cl-01 alkyl group.) (b) As a catalyst Using zinc fluoride borate, (c)
A method characterized in that the finishing dye liquor contains a light reflector (Aufhellers) of the following formula (n) and/or (III) (ul (III)) in an amount of O, %.

As the finishing agent, it is preferable to use one in which R1 and R2 represent a methyl group, R3 and R4 represent a hydrogen atom, and concentrated zinc heptadate is used as a catalyst in the formula (■).

[Function] Textile materials can be processed at any finishing stage, e.g.
means woven, knitted, spun and fibres.

The textile material consists of cellulose fibers or contains cellulose fibers mixed with other fibers, for example polyester fibers, polyamide fibers such as nylon, wool and polyacrylonitrile fibers.

In order to easily control the finishing of the textile material, it is impregnated with an aqueous dye liquor containing a finishing agent and a catalyst for crosslinking the finishing agent.

In one embodiment of the process according to the invention, it is conceivable to first impregnate the textile material with an aqueous dye liquor containing only the finishing agent and then apply the catalyst to the fabric in a separate step. However, embodiments are preferred in which the finishing agent and the catalyst dissolved in the same dye liquor are applied to the textile material.

According to the invention, the aqueous dye liquor (a) contains a compound of the following formula (1) as a finishing agent.

(In the formula, R1 and R2 represent a hydrogen atom or a C, -C3 alkyl group. However, at least one of R'8 and R2 represents a C5-C, alkyl group. RS and R4 represent a hydrogen atom or a C5-C3 alkyl group. , represents an alkyl group) This type of compound can be obtained, for example, according to the method described in European Patent No. 0036076. That is, these compounds include N,N'-dimethylurea, N-methylurea, N,N'-diethylurea, N-ethylurea, N
-n-propylurea, N-isopropylurea, NUN-
It is prepared by condensing compounds such as di-n-bucopylurea, N+N''-diisopropylurea with glyoxal in an acidic pH range.The molar ratio of substituted urea to glyoxal is from 1;1 to 1.1. As a finishing agent, among the compounds of formula (1), a compound in which substituents R1 and R2 represent a methyl group and substituents R3 and R2 represent a hydrogen atom, that is, N,N dimethyl-45-
Preference is given to adding dihydroxyethylene urea. The concentration of the compound of formula (■) in the finishing dye liquor is 20 to 100
1 preferably 30 to 60 gIQ.

Another essential component (b) of the finishing dye solution is fluoride-concentrated zinc oxide, or fluoride-concentrated zinc oxide and other catalysts customary in refining finishing processes (e.g. magne/rum chloride,
Contains mixtures of magnesium hydrogen phosphate, concentrated magnesium fluoride, aluminum chloride, aluminum sulfate, zinc nitrate or zinc chloride). Regarding the finishing agent of formula (1) dissolved in the chemical finishing dye liquor,
It contains 4 to 14 weights, preferably 8 to 14 weights of concentrated zinc 77-carboxylate or fluorinated zinc oxide as described above and other catalysts customary in high-refining finishing processes. Obviously, it is also possible to add the concentrated zinc fluoride oxide together with two or more of the other catalysts mentioned above, in which case the amount of the concentrated zinc fluoride oxide is lower in all mixtures than the finishing agent ( a)
50% or more of concentrated zinc fluoride oxide is selected for use. Of the catalyst mixtures, a mixture of concentrated fluorinated zinc and fluorinated magnesium is particularly preferred. Other highly refined finishing catalysts that may optionally be added together with the concentrated zinc heptanide are finishing agents (a
) is used in dishes of 0 to 8 weight.

The finishing dye liquor has the following formula (I) as another component (c).
Contains at least one compound of [) and/or (II[).

The compounds of formula (II) and (I[r) above are present alone in an amount of 0.05 to 0.5% by weight.

The finishing dye liquor contains the above essential components (a), (b) and (c).
), depending on the situation, further customary auxiliaries, such as hydrophobizing agents, softening agents (Weicb+nachuBsmiI
Lel), equalizer (EgzlisiermilLel)
), wetting agents (NeLxmittsl) and finishing agents as well as hand-changing agents (Gr(ivxriitor)). Hydrophobizing agents are, for example, aluminum-containing or zircon-containing paraffin-wax emulsions and silicon-containing preparations. As softeners, higher fatty acids, oxyethylated products of aliphatic alcohols or fatty acid amides, high molecular weight polyglycol ethers,
Examples include higher fatty acids, aliphatic alcohol sulfonic acid esters, and N-stearylurea compounds. As the equalizing agent, acidic esters of basic acids and ethylene oxide or propylene oxide adducts, long-chain oxyalkylatable basic materials can be used. Wetting agents include, for example, alkylnaphthalene sulfonic acids, alkali salts of sulfonated succinic acid dioctyl esters and extrinsic addition products of alkylene oxides to aliphatic alcohols (Aola
geruBsprodukLe). Possible finishing agents are cellulose ethers or esters and alginates. Furthermore, synthetic polymers and polycondensates are suitable for this purpose, which
Optionally, it is applied in an amount of 0.3 to 4% by weight, preferably 1 to 2.5% by weight, based on the dry zone article in auxiliaries.

Hand-modifying agents include silicone softeners which are very suitable for the process according to the invention, preferably amino-functional polydimethylsiloxanes (amine content from 0.2 to 5.0% by weight, based on the remaining polydimethylsiloxane). It will be done.

The finished product thereby not only has a very soft texture, but also has a clear positive effect on its wrinkle resistance.

The textile material is impregnated with a finishing dye liquor as described above. What is essential for carrying out the method of the invention is simply that components (a), (b) and (c) are applied to the textile material.

This requirement can most easily be met by dissolving the above three components in an aqueous dye liquor and applying it to the textile material. However, each component may also be dissolved on its own in an aqueous dye liquor and applied to the textile material. Treatment of textile materials with aqueous dye liquors is most simply accomplished by pressing out the excess liquor using Foulards (light plain weave or twill & silk fabrics). The amount of dyeing liquid obtained is 50 to 12
The range is 0%. Spraying, uniform dyeing using concentrated liquid (
pHxtsehen) or foam application (Schaumap
plika-Lion) to the textile material with component (a)-
Processing in (c) is also possible. After impregnating the textile material with an aqueous dye liquor, drying and then fixing of the impregnated textile material takes place. In this case, the fabric mass is heated for a short time at a temperature of 140-180°C. This results in crosslinking between the finishing material and the cellulose fibers and between the finishing materials. Fixation is for 20 seconds to 7 minutes, preferably 40 to 280
Lasts for seconds.

The higher the fixed temperature, the shorter the residence time at each applied temperature.

[Example 2] In the following Examples and Comparative Examples, the degree of easy-to-manage finishing will be explained using the following identification data. Dry wrinkle angle (sum of warp and weft according to DIN 53g90) Wet wrinkle angle (Tootal method, British Patent No. 72)
7NO) Monken) image after washing once at 60°C for 20 minutes, md.

Washing shrinkage for warp and weft after each wash for 20 minutes at 60°C, tensile strength (weft) and El Rejo measured according to ASTM D 16g2-84-175.
reph.

) Whiteness measured in percentage using a photometer Examples 1 to 3 and Comparative Examples 1 to 6 Cotton-irakusa-fabric with a weight per unit area of about 110 g/m2 was impregnated with fural as shown in Table 1, respectively. Impregnated with an aqueous finishing dye shown below and crushed at a residual humidity of approximately 75% (
abqostscben) L, after drying at 110°C and fixing at 160°C for 3 minutes, each of the above tests was carried out. The results obtained are shown in Table 2. As is clear from Table 2, according to Examples 1 to 3, finishing effects comparable to formaldehyde-containing finishing agents can be obtained in terms of whiteness and finishing effects. Catalysts other than concentrated zinc fluoride oxides are not very effective.

〔Effect of the invention〕

According to the method of the invention, unexpected improvements over the state of the art have been achieved in terms of wrinkle resistance, gloss after washing, durability and whiteness of finished cellulose-containing fabrics. The finishing effect of this formaldehyde-free finishing agent is comparable to that obtained with finishing agents consisting of urea-glyoxal-formaldehyde condensation products.

(Hereafter, margin) Table 1 Composition of aqueous finishing dye liquor (g/(ri) Comparative example Example N, N'-dimethylol-4,5- dihydroquine ethylenurea 50% aqueous solution N, N'-dimethyl-4,5- Dihydroxyethylene urea 50% aqueous solution MgC1□・6) (20 Z　n　CI　　・6　H2O N.H., C.I. 40% aqueous solution of Mg(BF+)z 50% aqueous solution of Zn (BF+)2 citric acid OO 1,4 Procedural amendment 1999 1271130

Claims (2)

[Claims] (1) A textile material consisting of cellulose fibers or containing cellulose fibers mixed with other fibers is impregnated with an aqueous dye liquor containing a finishing agent and a catalyst for crosslinking the finishing agent. , a method for easily controlling finishing of textile materials by drying and fixing the impregnated textile materials, (a) using a compound of the following formula (I) as a finishing agent, ▲ mathematical formula, chemical formula, table, etc. ▼(I) (In the formula, R^1 and R^2 are hydrogen atoms or C_1~
C_3 represents an alkyl group. However, at least one of R^1 and R^2 represents a C_1 to C_3 alkyl group. R^3 and R^4 represent a hydrogen atom or a C_1 to C_4 alkyl group. ) (b) using zinc fluoroborate as a catalyst; (c)
The finishing dye solution has the following formula (II) and/or (III) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (II) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (III) The optical reflector of 0. Containing 01 to 1.0% by weight,
A method characterized by: (2) The method according to claim (1), wherein R^1 and R^2 represent a methyl group, R^3 and R^4 represent a hydrogen atom, and zinc fluoroborate is used as a catalyst.