KR100321570B1 - Antifoam Composition - Google Patents

Abstract

The present invention relates to an antifoaming agent composition useful in addition to antifoaming agents, general paints, aqueous cutting oils, etc. in various emulsions, which have particularly excellent deformability and antifoam persistence, and also have good dilution stability and thus do not change dispersibility even when used in combination with various drugs. Organopolysiloxane as (A) component represented by following General formula (I), Organohydrogen polysiloxane as (B) component represented by following General formula (II), Polyoxyalkyl represented by following General formula (III) (Oxy) component and polyoxy as (b) component as an addition reaction product of a blend of a ethylene polymer, a polyoxyalkylene-modified silicone oil represented by the following general formula (IV), and dimethylpolysiloxane as a component (E) and fine powder silica Alkylene modified silicone oil and / or polyoxyalkylene polymer.

Description

Antifoam composition

The present invention is an antifoaming agent composition, in particular, excellent anti-foaming properties, anti-foaming persistence, and also good dilution stability, so that even when used in combination with various drugs, the anti-foaming agent added in various emulsions, general The present invention relates to an antifoaming agent composition useful for coating, aqueous cutting oil, and the like.

Silicone antifoaming agent has various excellent properties compared to other antifoaming agents and is widely used in industrial processes involving foaming, such as chemical industry, food industry, petroleum industry, textile industry and pharmaceutical industry, and dimethylpolysiloxane, methylphenylpolysiloxane, methylvinylpolysiloxane Oil compound antifoaming agents in which silicone oils such as these are mixed with fine powder silica, and emulsion antifoaming agents formed by dispersing these oil compounds together with a surfactant in water are widely used.

In addition, this emulsion type antifoaming agent is used in combination with an oil compound and an organopolysiloxane modified with a polyoxyalkylene group as its substitute because the emulsion breaks down under extreme conditions such as high temperature, high alkalinity and high shear strength. Self-emulsifying antifoaming agents (see Japanese Patent Publication No. 52-19836, Japanese Patent No. 52-22638, Japanese Patent No. 55-23084) are used for dyeing, various emulsions, aqueous inks, etc. have.

However, these silicone-based antifoaming agents increase the addition amount of the antifoaming agent in a system which is severely contacted with gas in a foamable liquid or severely stirred under heating conditions such as high temperature dyeing, so that the amount of the antifoaming agent is increased or the antifoaming agent is continuously added. There was a disadvantage that it needs to be put in.

Accordingly, various studies have been conducted for the purpose of further improving the defoaming properties. For example, a method of hydrophobizing the silica used in an oil compound by treating it with dimethyl dichlorosilane or the like in advance (Japan) Patent Publication No. 52-31836), a method of treating silica with a nitrogen-containing organosilicon compound (see Japanese Patent Publication No. 51-35556), and the like have been proposed. Long time is required, treatment facilities are required, and the process is complicated, so it is not economical.

Moreover, regarding this silicone type antifoamer, what was produced by adding organohydrogenpolysiloxane, silica, and a catalyst to organopolysiloxane or hydrocarbon oil is proposed (refer Japanese Unexamined-Japanese-Patent No. 57-48307). If the heat treatment is not performed by adding an organometallic catalyst, there is a risk that the surface treatment of silica does not proceed sufficiently and there is a risk of flammable explosion by hydrogen gas generated during the treatment process. Furthermore, organopolysiloxane may be added to the mixture of organopolysiloxane and silica. A method of incorporating a polymer crosslinked product (see Japanese Patent Application Laid-Open No. 3-188905) and the like have been proposed, but since this requires various processes, it takes a long time to manufacture, and has a high viscosity, which is good at dilution. Dispersibility was difficult to obtain. Accordingly, the inventors of the present invention first propose an antifoaming composition using an oil compound using an organosilicon compound having an alkenyl group as a silica treatment agent for the purpose of improving the antifoaming property of a self-emulsifying agent (see Japanese Patent Application Laid-Open No. Hei 4-91813), and A defoamer composition (see Japanese Patent Application Laid-Open No. 4-93453) comprising a (CH ₃ ) ₃ SiO _1/2 unit and a siloxane resin composed of SiO _4/2 units in an oil compound was proposed. There is a need to improve further.

The present invention relates to an antifoam composition which solves these disadvantages and shortcomings, which comprises (a) 10 to 60% by weight of a liquid to arc composition obtained by reacting a mixture consisting of the following A) to E) in the presence of an addition reaction catalyst,

A) General formula (Ⅰ)

1 to 50% by weight of organopolysiloxane represented by (wherein R ¹ is the same or different monovalent hydrocarbon group having 1 to 6 carbon atoms, n is 1 to 1,000),

B) General formula (II)

1 to 50% by weight of an organohydrogenpolysiloxane represented by (wherein R ² is the same or different monovalent hydrocarbon group having 1 to 6 carbon atoms, L is 1 to 10, m is 1 to 100),

C) General formula (III)

Wherein R ³ is an ethylene group and / or a propylene group, R ⁴ is a hydrogen atom or a monovalent organic group selected from an alkyl group having 1 to 6 carbon atoms, an acetyl group and an isocyanic acid group, and p is 0 to 4 , q is 1 to 30), and 0 to 10% by weight of a polyoxyalkylene polymer having an average molecular weight of 100 to 1,500,

(However, the content of A), B), C) is 5 to 50% by weight).

D) General formula (Ⅳ)

[Wherein R ⁵ is the same or different monovalent hydrocarbon group having 1 to 6 carbon atoms and G ¹ is a general formula — (CH ₂ ) sO (R ⁶ O) tR ⁷ where R ⁶ is an ethylene group and / or A propylene group, R ⁷ is a hydrogen atom or a monovalent organic group selected from an alkyl group having 1 to 6 carbon atoms, an acetyl group and an isocyanic acid group, s is 2 to 6 and t is 5 to 50) 5 to 50% by weight of a polyoxyalkylene-modified silicone oil, wherein the group is 500 to 3,000, x is 1 to 10, and y is 10 to 100;

E) 10 to 80% by weight of the formulation consisting of 85 to 99.9 parts by weight of dimethylpolysiloxane having a viscosity of 10 to 100,000 cs at 25 ° C and 15 to 0.1 parts by weight of fine powder silica,

(B) General formula (Ⅴ)

[Wherein G ² is a general formula — (CH ₂ ) uO (R ⁹ O) vR ¹⁰ (wherein R ⁹ is an ethylene group and / or a propylene group, R ¹⁰ is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, A monovalent organic group selected from an acetyl group and an isocyanic acid group, u is 2 to 6, v is 5 to 50), a polyoxyalkylene group represented by R ⁸ is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, A monovalent organic group selected from an acetyl group and an isocyanic acid group, wherein a and b are 1.9 ≦ a + b ≦ 2.2, and one or two or more polyoxyalkylene-modified silicone oils and / or average molecular weights One or two or more polyoxyalkylene polymers of 500 to 5,000, characterized in that consisting of 90 to 40% of the weight.

In addition, the present inventors conducted various studies to develop a novel self-emulsifying antifoaming agent composition having a good antifoaming effect and long-lasting effect, and as a result, an oil compound composition composed of a base oil and fine powder silica has an organo having a vinyl group at the molecular end thereof. Polysiloxanes, <organopolysiloxanes containing SiSi groups> and polyoxyalkylene modified silicone oils, also mixtures of dimethylpolysiloxanes and fine powdered silica, if necessary, mixed with polyoxyalkylene compounds having unsaturated groups in the molecular chain, As a liquid to arc-like silicone composition obtained by reacting in the presence of a catalyst, a polyoxyalkylene-modified silicone oil and, if necessary, a polyoxyalkylene polymer were mixed to form an antifoaming composition, which resulted in good dilution stability and high temperature high shear force. Even having excellent mechanical stability Was found that, the composition was confirmed to be so easily obtained by simple mixing of the components that work as well as safe and economical, and completed the present invention the components to continue the research concerning its mixing ratio to be used for it.

The antifoaming agent composition of the present invention is a liquid to arc-like composition as (A) component obtained by addition reaction of components A) to E) and a polyoxyalkylene-modified silicone oil and / or polyoxyalkylene polymer as (B) component. Although it has been made, it has excellent foamability and long-lasting defoaming, so even if a small amount is added, the foaming effect is large, the dilution stability is excellent, and the mechanical stability under high temperature and high shear strength is excellent. Since it does not fall, it has the advantage that it can be used suitably also for addition antifoamers, general paint, aqueous cutting oil, etc. in various oil agents.

The antifoam composition of the present invention is a polyoxyalkylene-modified silicone oil and / or as a component (10) to 60 parts by weight of a liquid to arc-like composition as the (A) component obtained by the addition reaction of the components A) to E) and (B) component It consists of 90 to 40 parts by weight of the polyoxyalkylene polymer.

The component A) used to prepare this (A) component is an organopolysiloxane in which the molecular chain sock group represented by the general formula (I) is sealed with a vinyldiorganosilyl group (wherein R ¹ is a methyl group, an ethyl group, Alkyl groups, such as a propyl group, a butyl group, an aryl group, such as a phenyl group, or the chloromethyl group, trifluoropropyl group, in which some or all of the hydrogen atoms couple | bonded with the carbon atom of these groups were substituted by the halogen atom, the cyano group, A non-substituted or substituted monovalent hydrocarbon group having 1 to 6 carbon atoms selected from a cyanoethyl group or the like, and when n is less than 1, the (a) component obtained does not become a uniform liquid to arc-like body; Since the composition is deficient in defoaming, it is preferable to set it in the range of 1 to 1,000, preferably 10 to 100.

Next, the component (B) used to prepare this component (A) is an organohydrogenpolysiloxane represented by the above general formula (II), wherein R ² is an unsubstituted carbon atom having 1 to 6 carbon atoms identical to the above-mentioned R ^1. Or a substituted monovalent hydrocarbon group, 1 indicating the number of groups having a SiSi group is 1 to 10, and m indicating the number of organosiloxane groups is 1 to 100.

In addition, the component (C) used to prepare this component (A) is a polyoxyalkylene polymer represented by the above general formula (III), wherein R ³ is an ethylene group and / or a propylene group, and R ⁴ is A monovalent organic group selected from a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, an acetyl group, or an isocyanic acid group, wherein p is 0 to 4 and q is 1 to 30, but the antifoaming agent finally obtained when the average molecular weight is less than 100 If the dilution stability of the composition is poor and greater than 1,500, the antifoaming property of the antifoaming agent composition is inferior. Therefore, the dilution stability of the composition is required to be in the range of 100 to 1500.

In addition, if the total amount of the (A), (B), and (C) components in the (A) component synthesis raw material is less than 5% by weight, the addition reaction does not proceed smoothly, and thus the desired effect cannot be obtained, and this is more than 50% by weight. Since the dilution stability of the antifoamer composition finally obtained will be inferior when it increases, it is necessary to set it as the range of 5-50 weight%, but a preferable range is 10-30 weight%. In addition, the components (A), (B), and (C) are mixed with the following components (D) and (E), and then an addition reaction catalyst is added to cause the addition reaction. The blending ratio of components (B) and (C) is [Va-Si-H (molar ratio) of vinyl group of (A) component + unsaturated group of (C) component / (B) component]] = 3/1 to 1/3 It is good to set so that it may become a range, More preferably, it is a range of 2/1-1/2.

Component (D) used to prepare this (A) component is a polyoxyalkylene-modified silicone oil represented by the following general formula (IV), wherein R ⁵ is a monovalent hydrocarbon having 1 to 6 carbon atoms as R ¹ And C ¹ is represented by the general formula — (CH ₂ ) sO (R ⁶ O) tR ⁷ , wherein R ⁶ is an ethylene group and / or a propylene group, and R ⁷ is a hydrogen atom or a C 1-6 It is a monovalent organic group selected from an alkyl group, an acetyl group, and an isocyanic acid group, s is 2 to 6, preferably 2 to 3, t is a group of 5 to 50, preferably 15 to 45, but has a Ping bacteria molecular weight of 500 If it is less than it, the dilution stability of the finally obtained antifoamer composition falls, and if it is larger than 3,000, since the antifoaming property falls, it is necessary to set it as 500-3,000, but it is good to set it as 1,000-2,000 preferably. In addition, when X thereof is less than 1, the dilution stability of the finally obtained antifoaming agent composition is inferior, and when it is larger than 10, the antifoaming property is inferior. Therefore, it is necessary to set it to 1 to 10, preferably 2 to 5, and finally when y is less than 10 Since the antifoaming property of the antifoamer composition obtained by this invention is inferior, and dilution stability is inferior when it is larger than 100, it is necessary to make it into the range of 10-100, Preferably it is good to set it as 20-50.

In addition, the component (E) used to prepare this component (A) can be easily prepared by mixing dimethylpolysiloxane and fine powder silica at room temperature to 200 ° C as a combination of dimethylpolysiloxane and fine powder as described above. . In view of the ease of dispersing and workability of dimethylpolysiloxane, the viscosity should be as low as possible, and the viscosity should be high in terms of defoaming persistence, but when the viscosity is less than 10 cS, the antifoaming composition of the finally obtained antifoam composition is inferior. , When it becomes larger than 100,000 cS, the dilution stability is inferior. Therefore, the viscosity needs to be in the range of 10 to 100,000 cS, preferably in the range of 100 to 20,000 cS.

In addition, the fine powder silica used herein is well known, and any of wet silica and dry silica is preferable, so that precipitated silica, silica cellogel, fumed silica, or the surface treated with organic silyl may be used. Illustrated, specifically, aerodyl [Nippon Aerodrome Co., Ltd. brand name], Nipsil [Nippon Silica Co., Ltd. brand name], Cabosil (American Cabot company brand name), Santo cell [ US Monsanto Chemical Co., Ltd.], etc., but it is preferable that the specific surface area by BET method shall be 100 m <2> / g or more.

In addition, this fine powder silica is less than the 0.1 parts by weight of silica to 100 parts by weight of the silicone oil in (E), the antifoaming property of the finally obtained antifoaming agent composition is inferior; And since workability worsens, it is necessary to set it as 0.1-15 weight part, It is good to set it as 1-10 weight part preferably.

This component (A) is produced by the addition reaction of the above components (A) to (E), but with respect to the blending amount of the component (A) Nash for this reaction, the component A) is uniform if it is less than 1% by weight. If one liquid to arc phase (A) component is not obtained, and more than 50% by weight, the antifoaming property of the finally obtained antifoaming agent composition is inferior, so 1 to 50% by weight is preferable, and preferably 3 to 30% by weight. . When the component (B) is less than 1% by weight, uniform liquid to arc-like (A) components are not obtained. When the component (B) is more than 50% by weight, the antifoaming property of the finally obtained antifoaming agent composition is deteriorated, so 1 to 50% by weight is required. Preferably from 3 to 30% by weight. When the component (C) is more than 10% by weight, the antifoaming property is inferior, so 0 to 10% by weight is required, and preferably 0 to 5% by weight. When the component (D) is less than 5% by weight, the dilution stability of the finally obtained antifoaming agent composition is inferior, and when it is more than 50% by weight, 5 to 50% by weight is required, and more preferably 10 to 30% by weight. % Is good. If the component (E) is less than 10% by weight, the dilution property of the finally obtained antifoaming agent composition is inferior, and if it is more than 80% by weight, dilution stability is low, so 10 to 80% by weight is required, and preferably 20 to 70% by weight. Is good.

This (A) component can be easily prepared by mixing and stirring the above (A) to (E) in the presence of a predetermined amount of the addition reaction catalyst, the addition reaction catalyst used here is an organic solvent, for example methanol, ethanol , Aliphatic alcohols such as 2-propanol, butanol, aromatic hydrocarbons such as benzene, tolkene, xylene, aliphatic or alicyclic hydrocarbons such as n-pentane, n-hexane, cyclohexane, dichloroethane, chloroform, carbon tetrachloride, trichloroethane Platinum compounds (eg, chloroplatinic acid, alcohol-modified platinum chloride, chloroplatinic acid-vinylsiloxane complexes, etc.) or rhodium compounds which are soluble in halogenated hydrocarbons such as trichloroethylene and hydrochloride hydrocarbons. Particularly preferred are platinum chlorides, [Pt (PPh ₃ ) ₃ ], and the like, which are used in the hydrosilylation reactions described in chloroplatinic acid, US Pat. Nos. 3,159,601, 3,159,662, 3,775,452, and the like. This may be, for example, a complex of vinyl siloxane with a chloroplatinic acid compound and an alcohol-modified compound thereof. Among them, chloroplatinic acid, or a complex compound of vinylsiloxane and chloroplatinic acid described in JP-A-33-9969 is particularly preferable. The specific operation of the addition reaction is, for example, using a reactor such as a planetary mixer equipped with a suitable stirring device, and blending the desired amount of the components (A) to (E), and then adding the catalyst to about 50 to You may agitate at the suitable temperature of about 150 degreeC.

The addition reaction preparation thus prepared is preferably treated under shear force in order to obtain a uniform (A) component. The treatment under this shearing force can be performed by, for example, a three-rod roll mill, a two-roll roll mill, a sand grinder, a colloid mill, a Gaurin Homo 13 denser, and the like, and among them, a method by a three-roll roll mill is preferable.

In addition, in the present invention, the content of the (A) component in 100 parts by weight of the antifoaming agent composition is less than 10 parts by weight of the antifoaming property, more than 60 parts by weight of 10 to 60 parts by weight is required because dilution stability is poor, more preferred The range is 20 to 40 parts by weight.

Next, the component (b) constituting the antifoam composition of the present invention is a polyoxyalkylene-modified silicone oil and / or a polyoxyalkylene polymer represented by the general formula (V), wherein R ⁸ is a hydrogen atom or A monovalent organic group selected from an alkyl group having 1 to 6 carbon atoms, an acetyl group and an isocyanic acid group, G ² is represented by the general formula — (CH ₂ ) uO (R ⁹ O) vR ¹⁰ , and R ⁹ is an ethylene group and ( Or) a propylene group, R ¹⁰ is the same group as R ⁸ , u is 2 to 6, preferably 2 to 3, v is 5 to 50, preferably 15 to 45 and a, b are each 1.9 ≤ a + b ≤ 2.2, but it is preferred to be liquid at room temperature, and its viscosity is less than 10 cS, the resulting antifoam composition is easy to be separated because of low stability, if higher than 100,000 cS is separated when the antifoam composition is diluted with water Viscosity is 10-100 because it is hard to do It is necessary to make the range of, 000 cS, and the preferred range thereof is 100 to 100,000 cS.

The polyoxyalkylene-modified silicone oil may be a commercially available polyether-modified silicone, and may be, for example, a vinyl group or an allyl group at the end of the molecular chain of an organopolysiloxane containing ≡SiH group according to a conventionally known method. The polyoxyalkylene compound having an unsaturated group such as the above can be easily obtained by addition reaction in the presence of a platinum catalyst. In addition, silicone oil modified with a single polyoxyalkylene compound as well as silicone oil containing two or more oxyalkylene groups having different molar ratios of oxyethylene group / oxypropylene group in the same molecule may be used. Oxyalkylene modified silicone oil can be used.

In addition, although this polyoxyalkylene polymer becomes an emulsifier, the viscosity of the antifoamer composition of this invention can be reduced by mix | blending this component, and this has the effect of improving the workability at the time of water dispersion. The polyoxyalkylene polymer may be any compound having a (R ¹¹ O) group (wherein R ¹¹ is an ethylene group and / or a propylene group) in the molecule, and these may be linear, for example, (Ⅵ)

(Wherein R ¹¹ is the same as described above, R ¹² is a terminal group, R ¹³ is a monovalent alkyl group), and may be branched, such as a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, acetyl as well as both terminal groups. Groups, isocyanic acid groups and the like are common, but are not particularly limited to these. In addition, it is preferably liquid at room temperature, and if the average molecular weight is less than 500, the stability with time of the finally obtained antifoaming agent composition deteriorates, and if it is larger than 5,000, the viscosity becomes high, so that dispersibility and workability deteriorate. Although good, it is good to set it as 1,000-3,000 more preferably. In addition, as a polyoxyalkylene compound used here, it is not limited to 1 type, You may use together 2 or more types of polyoxyalkylene polymers in which HLB or terminal groups differ.

If the blending amount of the antifoaming agent composition of 100 parts by weight of this component (b) is less than 40 parts by weight, the dilution stability of the finally obtained antifoaming agent composition is lowered. Preferably 50 to 70 parts by weight is good.

In the component (b), when the weight ratio of the oxyethylene group / oxypropylene group of the polyoxyalkylene-modified silicone oil and / or the polyoxyalkylene compound is less than 0.1, the hydrophobicity becomes stronger and the action as an emulsifier becomes insufficient. The water dispersibility of the finally obtained antifoaming agent composition worsens, and even if it is larger than 5, the hydrophilicity becomes too strong, and in this case, 0.1 to 5 is required because the action as an emulsifier is not sufficiently exhibited and the dilution stability worsens, and the preferred range is 0.4 to 3 to be.

Although the antifoamer composition of this invention can be obtained by mixing the predetermined amount of said (A) and (B) component, it is good to mix these components uniformly using a mixer, such as a homomixer, Although mixing is not specifically limited, You may heat in 40-150 degreeC.

Example

Although the synthesis example, the Example, and the comparative example of the (A) component used for this invention are demonstrated below, the defoaming test method and dilution stability test method of the antifoamer composition obtained by this example are as shown below.

[Defogging test method by anionic foam liquid]

Sodium polyoxyethylene alkyl ether sulfate · 100 ppm of antifoam composition was added to 500 g of 0.1% aqueous solution of [Pasophto EK Nippon Yushi Co., Ltd. brand name], and it stirred at 25 degreeC for 30 second by the juice mixer, and then 1 1 They were transferred to the measuring cylinder and the change in the volume (ml) over time was measured.

[Defogging test method by nonionic foaming liquid]

100 ppm of an antifoam composition was added to 500 g of an aqueous solution of 0.05% of polyoxyethylene nonylphenyl ether [emulsion 909 HLB = 12.4, manufactured by Gao Co., Ltd.], and stirred in a juice mixer at 25 ° C. for 30 seconds. They were transferred to the measuring cylinder and the change in the volume (ml) over time was measured.

[Dilution stability test method]

100 g of the 10% aqueous dispersion of the antifoam composition was placed in a 200 ml glass beaker, and the solution appearance after standing at 25 ° C. for 1 day was visually evaluated as follows.

○…. Homogeneous emulsion, no oil, no sedimentation of silica.

Δ. Oil is floating or silica is slightly precipitated.

×… High oil and high silica sedimentation.

Synthesis Example

A-1, A-2 shown below as (A) component in the compounding quantity of Table 1 in the inner volume of 1,000 ml planetary mixer

As the component (B), the following B-1 and B-2

(C) component as _{CH 2 = CHCH 2 O (C} 2 H 4 O) 9 H,

As the component (D), the following D-1, D-2

As the component (E), the following E) -1 to E) -6

0.1 g of 2% isopropyl alcohol solution of chloroplatinic acid was added as an addition reaction catalyst, and the mixture was stirred at 70 to 80 ° C for 1 hour, cooled, and kneaded twice with a grinder in a grinder to give a white viscosity. Uniform arc-like compositions (A) -1 to (A) -8 were obtained.

Table 1

Examples 1 to 8, Comparative Examples 1 to 8

(A) -1 to (A) -8 as (A) component obtained in the said synthesis example, and (B) -1 to (B) -4 below as said (E) -1 and (B) component

To the blending amounts shown in Tables 2 and 3 and stirred for 10 minutes in a homomixer to prepare antifoam compositions Nos. 1 to 18. These were all white to off-white uniform liquid compositions. These compositions were subjected to the defoaming test and the dilution stability test to obtain the results as shown in Tables 4 and 5.

Table 2,3

Table 4

Table 5

The present invention relates to an antifoam composition, which is an organopolysiloxane as component (A) represented by the general formula (I), an organohydrogencolisiloxane as component (B) represented by the general formula (II), and a general formula Polyoxyalkylene polymer as (C) component represented by (III), Polyoxyalkylene modified silicone oil as (D) component represented by General formula (IV), and dimethylpolysiloxane and (F) powder silica as (E) component 10 to 60 parts by weight of the component (A) obtained by the addition reaction of the compound of formula (I) and 90 to 40 parts by weight of the component (B) composed of a polyoxyalkylene-modified silicone oil and / or a polyoxyalkylene polymer. However, it is particularly excellent in foaming and foaming sustainability, and even if a small amount is added, a large foaming effect can be obtained and the dilution stability is good. Since it is excellent in mechanical stability and dispersibility is not impaired even when used together with various chemical agents, it has the advantage that it can be used suitably for addition antifoamers, general paints, and aqueous cutting oils in various oils.

Claims (1)

(A) 10 to 60% by weight of the liquid to arc-like composition obtained by reacting the mixture consisting of the following (A) to (E) in the presence of an addition reaction catalyst, A) General formula (Ⅰ) 1 to 50% by weight of organopolysiloxane represented by: wherein R ¹ is the same or different monovalent hydrocarbon group having 1 to 6 carbon atoms, n is 1 to 1,000, B) General formula (II) 1 to 50% by weight of organohydrogenpolysiloxane represented by (wherein R ² is the same or different monovalent hydrocarbon group having 1 to 6 carbon atoms, L is 1 to 10, m is 1 to 100), C) General formula (III) Wherein R ³ is an ethylene group and / or a propylene group, R ⁴ is a hydrogen atom or a monovalent organic group selected from an alkyl group having 1 to 6 carbon atoms, an acetyl group and an isocyanic acid group, and p is 0 to 4 , q is 1 to 30), and 0 to 10% by weight of a polyoxyalkylene polymer having an average molecular weight of 100 to 1,500, (However, the content of A), B), C) is 5 to 50% by weight). D) General formula (Ⅳ) [Wherein R ⁵ is the same or different monovalent hydrocarbon group having 1 to 6 carbon atoms and G ¹ is a general formula — (CH ₂ ) sO (R ⁶ O) tR ⁷ where R ⁶ is an ethylene group and / or A propylene group, R ⁷ is a hydrogen atom or a monovalent organic group selected from an alkyl group having 1 to 6 carbon atoms, an acetyl group and an isocyanic acid group, s is 2 to 6 and t is 5 to 50) 5 to 50% by weight of a polyoxyalkylene-modified silicone oil, wherein the group is 500 to 3,000, x is 1 to 10, and y is 10 to 100; E) 10 to 80 weight percent blend consisting of 85 to 99.9 parts by weight of dimethylpolysiloxane having a viscosity of 10 to 100,000 cs at 25 ° C. and 15 to 0.1 parts by weight of fine powder silica, (B) General formula (Ⅴ) [Wherein G ² is a general formula — (CH ₂ ) uO (R ⁹ O) vR ¹⁰ (wherein R ⁹ is an ethylene group and / or a propylene group, R ¹⁰ is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, A monovalent organic group selected from an acetyl group and an isocyanic acid group, u is 2 to 6, v is 5 to 50), a polyoxyalkylene group represented by R ⁸ is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, A monovalent organic group selected from an acetyl group and an isocyanic acid group, wherein a and b are 1.9 ≦ a + b ≦ 2.2, and one or two or more polyoxyalkylene-modified silicone oils and / or average molecular weights An antifoaming agent composition comprising 90 to 40 weight percent of one or two or more polyoxyalkylene polymers of 500 to 5,000.