DEFOAMING AGENT FOR LIQUID DETERGENT

Abstract

Provided is a defoaming agent for a liquid detergent, comprising the following components: component A1, a modified polyorganosiloxane formed by reacting a hydrogen-containing polyorganosiloxane, an unsaturated polyether and an α-olefin; component A2, a modified polyorganosiloxane formed by reacting a hydrogen-containing polyorganosiloxane, an unsaturated polyether and a bivinyl-terminated polyorganosiloxane; component B, an organosilicon composition composed of a hydrogen-containing polyorganosiloxane, a polymer composed of an acrylate and an α-olefin, silica and an organosilicon resin; component C, a thickening agent; and component ID, water. An excellent compatibility between the modified polyorganosiloxanes A1 and A2 enables the defoaming agent to exhibit an excellent defoaming performance, stability and clarity in a laundry detergent.

Claims

1. A defoaming agent for a liquid detergent, comprising the following components: a component A1: 2-25 parts by weight of a modified polyorganosiloxane formed by reacting a hydrogen-containing polyorganosiloxane, an unsaturated polyether and an α-olefin; a component A2: 2-25 parts by weight of a modified polyorganosiloxane formed by reacting a hydrogen-containing polyorganosiloxane, an unsaturated polyether and a bivinyl-terminated polyorganosiloxane; a component B: 2-20 parts by weight of an organosilicon composition composed of an acrylate, a polyorganosiloxane modified through grafting with an α-olefin, silica and an organosilicon resin; a component C: 0.5-5 parts by weight of a thickening agent; and a component D: 50-90 parts by weight of water.

2. The defoaming agent for a liquid detergent according to claim 1, further comprising a component E: 1-10 parts by weight of an emulsifier; and a component F: 0.01-0.5 parts by weight of a preservative.

3. The defoaming agent for a liquid detergent according to claim 1, wherein in the defoaming agent, there are 4-15 parts by weight of the component A1, 5-20 parts by weight of the component A2, 5-15 parts weight of the component B, 0.5-5 parts by weight of the component C, and 60-80 parts by weight of the component D.

4. The defoaming agent for a liquid detergent according to claim 1, wherein the component Al modified polyorganosiloxane is obtained through reaction of the hydrogen-containing polyorganosiloxane, the unsaturated polyether and the α-olefin in the presence of a catalyst at 80-180 ° C.

5. The defoaming agent for a liquid detergent according to claim 4, wherein the ratio of weight parts of the raw materials used in the component A1 is: 40-80 parts by weight of the hydrogen-containing polyorganosiloxane, 20-40 parts by weight of the unsaturated polyether and10-30 parts by weight of the α-olefin.

6. The defoaming agent for a liquid detergent according to claim 1, wherein the component A2 modified polyorganosiloxane is obtained through reaction of the hydrogen-containing polyorganosiloxane, the unsaturated polyether and the bivinyl-terminated polyorganosiloxane in the presence of a catalyst at 80-180 ° C.

7. The defoaming agent for a liquid detergent according to claim 6, wherein the ratio of weight parts of the raw materials used in the component A2 is: 40-80 parts by weight of the hydrogen-containing polyorganosiloxane, 20-40 parts by weight of the unsaturated polyether and 10-30 parts by weight of the bivinyl-terminated polyorganosiloxane.

8. The defoaming agent for a liquid detergent according to claim 1, wherein the preparation process of the component B is as follows: firstly the hydrogen-containing polyorganosiloxane is fully mixed with the acrylate, to which a catalyst is added at 60-80 ° C,then, after the system is heated to 90-110 ° C. and kept at the temperature, the α-olefin is added thereto, and further kept at the temperature,and finally, silica and the organosilicon resin are added and mixed to obtain the component B.

9. The defoaming agent for a liquid detergent according to claim 8, wherein the ratio of weight parts of the raw materials used in the component B is: 40-80 parts by weight of the hydrogen-containing polyorganosiloxane, 3-15 parts by weight of the acrylate, 10-30 parts by weight of the α-olefin, 1-15 parts by weight of silica and 5-20 parts by weight of the organosilicon resin.

10. The defoaming agent for a liquid detergent according to claim 1, wherein the hydrogen-containing polyorganosiloxane at least has a general structural formula as follows: H.sub.cMe.sub.3-.sub.cSiO(MeHSiO).sub.a(Me.sub.2SiO).sub.bSiMe.sub.3-.sub.cH.sub.c, wherein Me is a methyl group, c is 0 or 1, a is an integer from 2 to 100, and b is an integer from 20 to 300.

11. The defoaming agent for a liquid detergent according to claim 1, wherein the unsaturated polyether has a general structural formula as follows: ViCH.sub.2O(EO).sub.x(PO).sub.yR.sup.1, wherein Vi is a vinyl, R.sup.1 is selected from hydrogen, alkyl group having 1 to 6 carbon atoms, ester group, epoxy group or amino group; EO is ethylene oxide, PO is propylene oxide, x and y are degrees of polymerization, x is an integer from 0 to 150; and y is an integer from 0 to 150, and x and y cannot both be 0.

12. The defoaming agent for a liquid detergent according to claim 1, wherein the α-olefin has a general structural formula as follows: Vi(CH.sub.2).sub.zH, wherein Vi is a vinyl, and z is an integer from 1 to 36.

13. The defoaming agent for a liquid detergent according to claim 1, wherein the bivinyl-terminated polyorganosiloxane has a general structural formula as follows: Vi(R.sup.2).sub.2SiO((R.sup.2).sub.2SiO).sub.mSi(R.sup.2).sub.2Vi, wherein Vi is a vinyl, m is an integer from 100 to 500, and R.sup.2 is an alkyl group having 1-6 carbon atoms.

14. The defoaming agent for a liquid detergent according to claim 10, wherein a is an integer from 10 to 70, b is an integer from 40 to 300, and the dynamic viscosity of a hydrogen-containing polyorganosiloxane at 25° C. is 20-5,000mPa.Math.s.

15. The defoaming agent for a liquid detergent according to claim 11, wherein x is an integer from 0 to 40, y is an integer from 0 to 100, and x and y cannot both be 0.

16. The defoaming agent for a liquid detergent according to claim 12, wherein z is an integer from 6 to 18.

17. The defoaming agent for a liquid detergent according to claim 13, wherein m is an integer from 200 to 400, R.sup.2 is a methyl group, and the dynamic viscosity of a bivinyl-terminated polyorganosiloxane at 25 ° C. is 50-2,000mPa.Math.s.

18. The defoaming agent for a liquid detergent according to claim 1, wherein the pH value of the defoaming agent is 6.5-7.

19. The defoaming agent for a liquid detergent according to claim 1, wherein the acrylate is one or a mixture of more selected from the group consisting of methyl acrylate, ethyl acrylate, butyl acrylate, isobutyl acrylate, 2-methyl methacrylate, 2-ethyl methacrylate and 2-butyl methacrylate; the silica is selected from fumed silica or precipitated silica; the organosilicon resin is an MQ resin composed of a chain unit CH.sub.3SiO.sub.1/2 and a chain unit SiO.sub.4/2; the catalyst for preparing the component A1 or the component A2 is selected from the group consisting of platinum-alcohol complex, platinum-olefin complex, platinum-alkoxide complex, platinum-ether complex, platinum-ketone complex, isopropanol solution of chloroplatinic acid or platinum-vinyl complex.

20. The defoaming agent for a liquid detergent according to claim 1, wherein the silica has a specific surface area of 50-500 m.sup.2/g, and the molar ratio between the chain units CH.sub.3SiO.sub.1/2 and the chain units SiO.sub.4/2 is (0.4-1.2):1.0.

21. The defoaming agent for a liquid detergent according to claim 1, wherein the thickening agent is one or more selected from the group consisting of polyacrylamide, carbomer, xanthan, and cellulose or polyacrylic acid thickening agent.

22. The defoaming agent for a liquid detergent according to claim 2, wherein the emulsifier is one or more selected from the group consisting of polyoxyethylene nonylphenyl ether, polyoxyethylene octylphenol ether, polyoxyethylene lauryl ether, polyoxyethylene oleyl ether, sorbitan monstearate, sorbitan monooleate, sorbitan tristearate, sorbitan trioleate, polyoxyethylene sorbitan mono stearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan tristearate, and polyoxyethylene castor oil; and the preservative is one or more selected from the group consisting of methyl-p-hydroxybenzoate, ethyl-p-hydroxybenzoate, propyl-p-hydroxybenzoate, butyl-p-hydroxybenzoate, sodium diacetate, benzoic acid and sodium salt thereof, sorbic acid and potassium salt thereof, dimethyl fumarate, 2-methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 4,5-dichloro-2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazoline-3-one, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, 5-chloro-2-n-octyl-4-isothiazolin-3-one, 1,2-benzo-isothiazolin-3-one, n-nutyl-1,2-benzo-isothiazolin-3-one, and 2-methyl-4,5-propylidene-4-isothiazolin-3-one.

23. The defoaming agent for a liquid detergent according to claim 1, wherein the defoaming agent is prepared using the following process: the modified polyorganosiloxane A1, the modified polyorganosiloxane A2 and the organosilicon composition B are mixed, heated to 50-80° C., and fully stirred; then in the case of keeping a constant temperature while stirring, a part of the thickening agent and water are added, and the pH value is regulated to 6.5-7.0; and finally, the emulsion thus obtained is homogenized, and the balance amount of the thickening agent and water are added.

24. The defoaming agent for a liquid detergent according to claim 19, wherein the amount of the first added thickening agent is 70-90% based on the total mass of the thickening agent, and the amount of the first added water is 30-60% based on the total mass of water.

Description

DETAILED DESCRIPTION

[0078] In the following examples, the monomers used in a modified polyorganosiloxane are respectively as follows:

[0079] A(I) Hydrogen-Containing Polyorganosiloxane:

[0080] H.sub.sMe.sub.3-cSiO(MeHSiO).sub.a(Me.sub.2SiO).sub.bSiMe.sub.3-cH.sub.c;

[0081] A (II) Unsaturated polyether: ViCH.sub.2O(EO).sub.x(PO).sub.yR.sup.1;

[0082] A(III) α-olefin Vi(CH.sub.2).sub.zH;

[0083] A(IV) Bivinyl-terminated polyorganosilicone: Vi(R.sup.2).sub.2SiO((R.sup.2).sub.2SiO).sub.mSi(R.sup.2).sub.2Vi.

[0084] Please see Table 1 for details of specifically used materials.

TABLE-US-00001 TABLE 1 Components A1-1 to A1-4, A2-5 to A2-8 and A-9 to A-14 of a modified polysiloxane Monomer General A(I) A(II) A(III) A(IV) formula/use Use Use Use Use level a b c level/g x y R.sup.1 level/g z level/g m R.sup.2 level/g A1-1 15 45 0 250 0 50 —CH.sub.3 230 8 120 — — 0 A1-2 65 190 1 250 20 0 —H 120 16 230 — — 0 A1-3 100 170 1 300 35 90 —NH.sub.3 200 12 100 — — 0 A1-4 30 150 0 450 30 70 —CH.sub.3 90 16 60 — — 0 A2-5 15 45 0 250 0 50 —CH.sub.3 250 — 0 210 —CH.sub.3 100 A2-6 65 190 1 250 20 0 —H 230 — 0 390 —CH.sub.3 120 A2-7 100 170 1 300 35 90 —NH.sub.3 150 — 0 280 —CH.sub.3 150 A2-8 30 150 0 400 30 70 —CH.sub.3 100 — 0 340 —CH.sub.3 100 A-9 15 45 0 250 0 50 —CH.sub.3 200 8 100 210 —CH.sub.3 50 A-10 65 190 1 250 20 0 —CH.sub.3 150 16 130 390 —CH.sub.3 70 A-11 100 170 1 300 35 90 —CH.sub.3 120 12 80 280 —CH.sub.3 100 A-12 30 150 0 350 30 70 —CH.sub.3 90 16 60 340 —CH.sub.3 50 A-13 100 170 1 300 35 90 —CH.sub.3 300 — 0 — — 0 A-14 30 150 0 450 30 70 —CH.sub.3 150 — 0 — — 0 Note: The dynamic viscosity of the above A(I) hydrogen-containing polyorganosiloxane at 25° C. is 50-5,000 mPa .Math. s; the dynamicviscosity of the A (IV) bivinyl-terminated polyorganosiloxane at 25° C. is 100-2,000 mPa .Math. s.

[0085] Modified polysiloxane A1-1 to A1-4 (i.e. A1-1, A1-2, A1-3 and A1-4) are prepared through reaction of A (I), A (II) and A (III) after mixing them, A2-5 to A2-8 (i.e. A2-5, A2-6, A2-7 and A2-8) are prepared through reaction of A (I), A (II) and A (IV) after mixing them, A-9 to A-12 are prepared through reaction of A (I), A (II), A (III) and A (IV) after mixing them, and A-13 and A-14 are prepared through reaction of A and A (II) after mixing them.

[0086] The preparation process of each modified polysiloxane comprises first adding the above use level of A (I), A (II), A (III) and A (IV), as well as a catalyst A (V), in a reactor at 80-180° C. for 0.5-3hours. The catalyst A (V) is an isopropanol solution of chloroplatinic acid with the platinum content of 5-15 ppm. In preparing A1-1 to A1-4 modified polysiloxane, the reaction temperature is 100-110° C., and the use level of the catalyst is 0.05-0.08% based on the mass of the modified polysiloxane. In preparing A2-5 to A2-8, the reaction temperature is 110-130° C., and the use level of the catalyst is 0.04-0.06% based on the mass of the modified polysiloxane. In preparing A-9 to A-12, the reaction temperature is 100-110° C., and the use level of the catalyst is 0.05-0.08% based on the mass of the modified polysiloxane.

[0087] Organosilicon composition B1 was prepared as follows:

[0088] 50 g of hydrogen-containing polyorganosiloxane.sub.3SiO(MeHSiO).sub.15(Me.sub.2SiO).sub.45SiMe.sub.3 was fully mixed with 12 g of methyl acrylate, to which a catalyst isopropanol solution of chloroplatinic acid (platinum content: 10-15 ppm) was added at 70° C., wherein the use level of the catalyst was 0.05% based on the mass of the composition. The system was heated to 100° C. and kept at the temperature for 1 hour, and then 28 g of α-olefin Vi(CH.sub.2).sub.8H was added thereto. Finally, 13 g of precipitated silica (60m.sup.2/g) and 5 g of an MQ silicon resin (molar ratio of M to Q=0.5:1.0) were added and mixed to obtain the target product.

[0089] Organosilicon composition B2 was prepared as follows: 60 g of hydrogen-containing polyorganosiloxaneHMe.sub.2SiO(MeHSiO).sub.65(Me.sub.2SiO).sub.190SiMe.sub.2H and 14 g of methyl acrylate were fully mixed, to which a catalyst isopropanol solution of chloroplatinic acid (platinum content: 10-15 ppm) was added at 69° C.,

[0090] wherein the use level of the catalyst was 0.05% based on the mass of the composition. The system was heated to 100° C. and kept at the temperature for 1 hour, and then 20 g of α-olefin Vi(CH.sub.2).sub.16H. was added thereto. Finally, 10 g of fumed silica (80 m.sup.2/g) and 10 g of an MQ silicon resin (molar ratio of M to Q=0.6: 1.0) were added and mixed to obtain the target product.

[0091] Organosilicon composition 133 was prepared as follows:

[0092] 70 g of hydrogen-containing polyorganosiloxaneHMe.sub.2SiO(MeHSiO).sub.100(Me.sub.2SiO).sub.170SiMe.sub.2H was fully mixed with 10 g of ethyl acrylate, to which a catalyst isopropanol solution of chloroplatinic acid (platinum content: 10-15 ppm) was added at 71° C., wherein the use level of the catalyst was 0.05% based on the mass of the composition. The system was heated to 100° C. and kept at the temperature for 1 hour, and then 12 g of a -olefin Vi(CH.sub.2).sub.12H was added thereto. Finally, 3 g of fumed silica (100 m.sup.2/g) and 20 g of an MQ silicon resin (molar ratio of M to Q=0.7: 1.0) were added and mixed to obtain the target product.

[0093] Organosilicon composition B4 was prepared as follows:

[0094] 50 g of hydrogen-containing polyorganosiloxaneMe.sub.3SiO(MeHSiO).sub.30(MeSiO).sub.150SiMe.sub.3 was fully mixed with 5 g of butyl acrylate, to which a catalyst isopropanol solution of chloroplatinic acid (platinum content: 10-15 ppm) was added at 70° C., wherein the use level of the catalyst was 0.05% based on the mass of the composition. The system was heated to 100° C. and kept at the temperature for 1 hour, and then 28 g of α-olefin Vi(CH.sub.2).sub.8H was added thereto. Finally, 13 g of fumed silica(200 m.sup.2/g) and 5 g of an MQ silicon resin (molar ratio of M to Q=0.9: 1.0) were added and mixed to obtain the target product.

[0095] Organosilicon composition B5 was prepared as follows:

[0096] 60 g of hydrogen-containing polyorganosiloxanaMe.sub.2SiO(MeHSiO).sub.65(Me.sub.2SiO).sub.190SiMe.sub.2H was fully mixed with 10 g of ethyl methacrylate, to which a catalyst isopropanol solution of chloroplatinic acid (platinum content: 10-15 ppm) was added at 70° C., wherein the use level of the catalyst was 0.05% based on the mass of the composition. The system was heated to 100° C. and kept at the temperature for 1 hour, and then 12 g of α-olefin Vi(CH.sub.2).sub.12H was added thereto. Finally, 3 g of precipitated silica (300m.sup.2/g) and 18 g of an MQ silicon resin (molar ratio of M to Q=0.8: 1.0) were added and mixed to obtain the target product.

[0097] Organosilicon composition 116 was prepared as follows:

[0098] 70 g of hydrogen-containing polyorganosiloxaneHMe.sub.2SiO(MeHSiO).sub.100(Me.sub.2SiO).sub.170SiMe.sub.2H was fully mixed with 10 g of methyl acrylate, to which a catalyst isopropanol solution of chloroplatinic acid (platinum content: 10-15 ppm) was added at 70° C., wherein the use level of the catalyst was 0.05% based on the mass of the composition. The system was heated to 100° C. and kept at the temperature for 1 hour, and then 20 g of α-olefin Vi(CH.sub.2).sub.16H was added thereto. Finally, 10 g of precipitated silica (300 m.sup.2/g) and 10 g of an MQ silicon resin (molar ratio of M to Q=0.6: 1.0) were added and mixed to obtain the target product.

[0099] Please refer to the prior art for the composition, operating conditions and the like that are not dearly mentioned in the following examples.

EXAMPLES 1-10

[0100] The defoaming agent products in examples 1-10 were respectively prepared as per the formulae in Table 2.

TABLE-US-00002 TABLE 2 Component Component Defoaming A Component D agent Example and use B and Component C and use Component E Component F solid Group level use level and use level level and use level and use level content Example A1-1 A2-5 B1  9 g Polyacrylic acid Water 60 g — — 40% 1 10 g 20 g thickening agent 1 g Example A1-2 A2-6 B2 13 g Polyacrylic acid Water 60 g — — 40% 2 10 g 16 g thickening agent 1 g Example A1-3 A2-8 B3 13 g Polyacrylic acid Water 60 g — — 40% 3 10 g 16 g thickening agent 1 g Example A1-4 A2-7 B4 13 g Carbomer Water 60 g — — 40% 4 10 g 16 g 1 g Example A1-1 A2-8 B4 13 g Polyacrylamide Water 60 g — — 40% 5 10 g 16 g 1 g Example A1-1 A2-5 B1 10 g Polyacrylic acid Water 70 g — — 30% 6 10 g  9 g thickening agent 1 g Example A1-1 A2-5 B1 9 g Polyacrylic acid Water 80 g — — 20% 7  4 g  6 g thickening agent 1 g Example A1-1 A2-5 B1 10 g Polyacrylic acid Water 60 g Sorbitan stearate — 40% 8 10 g 15 g thickening agent 60 2 g 1 g Polyoxyethylene sorbitan- monostearate 60 2 g Example A1-1 A2-5 B1 10 g Polyacrylic acid Water 60 g Polyoxyethylene — 40% 9 10 g 15 g thickening agent lauryl ether 4 g 1 g Example A1-1 A2-5 B1  9 g Polyacrylic acid Water 70 g Sorbitan stearate 2-methyl-4- 30% 10   7 g  9 g thickening agent 60 2 g isothiazolin- 0.7 g   Polyoxyethylene 3-one sorbitan 0.3 monostearate 60  2 g

[0101] The water in the above table was deionized water.

[0102] The preparation process in Examples 1-3: The component A and component B in Table were mixed, heated to 55-60° C., and fully stirred; the system was kept at a constant temperature, 40-50% of the component D and 90% of the component C were slowly added. thereto while stirring, and the pH was regulated to 6.5-7. The above emulsion was homogenized, and was diluted with the balance amount of the component C and component D to obtain the defoaming agent product with corresponding solid content.

[0103] The preparation process in Examples 4-7: The component A and component B in Table 2 were mixed, heated to 60-70° C., and fully stirred; the system was kept at a constant temperature, 30-35% of the component I) and 85% of the component C were slowly added thereto while stirring, and the pH was regulated to 6.5-7. The above emulsion was homogenized, and was diluted with the balance amount of the component C and component D to obtain the defoaming agent product with corresponding solid content.

[0104] The Preparation process in. Examples 8-9: The component A, component B and component E in Table 2 were mixed, heated to 50-80° C., and fully stirred; the system was kept at a constant temperature, 45-50% of the component D and 90% of the component C were slowly added thereto while stirring, and the pH was regulated to 6.5-7. The above emulsion was homogenized, and was diluted with the balance amount of the component C and component D to obtain the defoaming agent product with corresponding solid content.

[0105] The preparation process in Example 10: The component A, component B and component E in Table 2 were mixed, heated to 50-80° C., and fully stirred; the system was kept at a constant temperature, 30-40% of the component D and 85% of the component C were slowly added thereto while stirring, and the pH was regulated to 6.5-7. The above emulsion was homogenized, and was diluted with the balance amount of the component C and component D, and then the component F was added to obtain the defoaming agent product with corresponding solid content.

COMPARATIVE EXAMPLES 1-14

[0106] The defoaming agents in comparative examples 1-14 were respectively prepared as per the formulae in Table 3. In each comparative example, the defoaming agent with corresponding solid content was prepared respectively using the process in Example 1 or Example 9.

TABLE-US-00003 TABLE 3 Defoaming Comparative Component A Component B Component C Component D Component E agent example group and use level and use level and use level and use level and use level solid content Comparative A1-1 — B1 9 g Polyacrylic Water 60 g 40% example 1 30 g acid thickening agent 1 g Comparative — A2-6 B1 9 g Polyacrylic Water 60 g 40% example 2 30 g acid thickening agent 1 g Comparative — A-9 B1 9 g Polyacrylic Water 60 g 40% example 3 30 g acid thickening agent 1 g Comparative — A-13 B19 g Polyacrylic Water 60 g 40% example 4 30 g acid thickening agent 1 g Comparative A1-1 A-13 B19 g Polyacrylamide Water 60 g 40% example 5 10 g 20 g 1 g Comparative A1-4 A-9 B19 g Polyacrylic Water 60 g 40% example 6 10 g 20 g acid thickening agent 1 g Comparative A2-5 A-10 B19 g Polyacrylic Water 60 g 40% example 7 10 g 20 g acid thickening agent 1 g Comparative A2-6 A-12 B19 g Polyacrylic Water 60 g 40% example 8 10 g 20 g acid thickening agent 1 g Comparative A1-1 A-13 B110 g Polyacrylic Water 70 g 30% example 9 10 g  9 g acid thickening agent 1 g Comparative A2-6 A-14 B17 g Polyacrylamide Water 80 g 20% example 10  5 g  7 g 1 g Comparative A-10 A-14 B1 9 g Polyacrylic Water 60 g 40% example 11 10 g 20 g acid thickening agent 1 g Comparative A1-1 B1 10 g Polyacrylic Water 60 g Sorbitan stearate 40% example 12 26 g acid thickening 60 2 g agent 1 g Polyoxyethylene sorbitan monostearate 60 2 g Comparative A1-1 — B3 9 g Polyacrylic Water 60 g — 40% example 13 30 g acid thickening agent 1 g Comparative A1-1 A-13 B5 9 g Polyacrylic Water 60 g — 40% example 14 10 g 20 g acid thickening agent 1 g

[0107] Performance test of the defoaming agent obtained in each example was respectively made as follows,

[0108] Performance test of an organosilicone defoaming agent:

[0109] (1) Machine Wash Performance Test in a Liquid Detergent

[0110] The washing machine used in the test was a drum washing machine of Zanussi brand, model: ZWH6125, capacity: 7 kg. Test method: 50 g of detergent available on the market, 0.1 g of the prepared orgnaosilicone emulsion and 20 kg of water were added to the washing machine, and then the program for cotton and linen was selected. The view window of the washing machine is marked with 5 scale values, respectively representing 0, 25%, 50%, 75% and 100% height of the view window, “0” is the start representing no foam, while “100%” represents full of foam. The foam height was recorded once every 5minutes, and was recorded at the time of stop. The higher the value is, the foam scale value in the washing machine is, and the worse the defoaming performance is; the lower the foam scale value in equivalent time is, the better the defoaming performance of the product is. The test results are shown in Table 4.

TABLE-US-00004 TABLE 4 Time/min 5 10 15 90 25 30 35 40 45 50 Example 1 17 24 29 33 37 43 48 54 56 59 Example 3 15 23 39 34 36 41 45 49 55 58 Example 6 20 26 33 37 40 44 53 59 61 66 Example 7 23 30 35 41 45 49 52 57 65 73 Example 9 19 22 32 35 40 42 47 52 57 60 Comparative 21 26 30 36 39 45 52 56 59 64 example 1 Comparative 23 29 32 37 40 45 54 59 62 66 example 2 Comparative 20 24 29 34 40 44 54 59 62 65 example 3 Comparative 28 32 39 45 49 54 57 62 69 76 example 4 Comparative 24 29 32 36 38 44 49 54 59 64 example 5 Comparative 25 30 34 37 39 47 51 54 62 67 example 7 Comparative 26 32 37 45 49 53 57 62 66 68 example 9 Comparative 26 34 37 48 52 55 60 63 67 70 example 10 Comparative 39 35 41 45 49 54 59 65 71 79 example 12 Comparative 40 45 49 53 58 64 68 72 76 80 example 14

[0111] The defoaming performance of the defoaming agent in Examples 2, 4-5, 8 and 10 is close to or equivalent to that of the defoaming agent in Example 1. The comparison in Table 4 shows that there are excellent compatibility and synergistic effect between the components A1 and A2 in the defoaming agent. The defoaming performance of the defoaming agent in the vast majority of examples is far better or better than that of the defoaming agent using only a single component A or using a combination that has a structure close to the structure of A1 and A2, but is not A1 or A2 in the comparative examples,

[0112] (2) Compatibility: 1% organosilicone defoaming agent emulsion was added to the detergent samples. After fully stirring, the samples were observed whether to have floating oil or aggregates. After kept at 40° C. for a week, the mixture state was visually observed. The test results were shown in Table 5.

[0113] Visual observation as per the following grades:

[0114] 1=Clear without floating oil on the surface or container “annulus”.

[0115] 2=A little annulus or floating oil on the surface; redispersible in a detergent.

[0116] 3=Moderate amount of annulus or floating oil on the surface; difficult to be dispersed again.

[0117] 4=Obvious annulus or floating oil on the surface; very difficult to be dispersed again.

[0118] 5=Visually observed aggregation or flocculation of siloxane; and unable to be dispersed again,

[0119] (3) Clarity test: 0.5% emulsion was added to a laundry detergent, and fully. stirred. After foams fully disappeared, the transparency level was observed with white paper as a substrate, and was graded as 1, 2, 3 and 4, respectively being clear, slightly turbid, turbid and more turbid. The test results were shown in Table 5.

TABLE-US-00005 TABLE 5 Compatibility Clarity Example 1 1 2 Example 3 1 2 Exaniple 6 1 1 Example 7 1 1 Example 9 1 2 Comparative example 1 1 2 Comparative example 2 4 3 Comparative example 3 3 2 Comparative example 4 5 2 Comparative example 5 3 2 Comparative example 7 4 2 Comparative example 9 3 2 Comparative example 10 4 2 Comparative example 12 5 3 Comparative example 14 5 3

[0120] The compatibility and clarity of the defoaming agent in Examples 2, 4-5, 8 and 10 are close to or equivalent to the compatibility and clarity of the defoaming agent in Example 1. As can be seen from the comparison in Table 5, the compatibility and synergistic effect between the components A1 and A2 in a defoaming agent enable it to be closely bound with an organosilicon composition, not only have a better defoaming performance, but also improve the emulsion stability, and have more prominent advantages in compatibility and clarity. As can be seen from the comparative examples, the effect is far better than that of the defoaming agent using only a single component A or using a combination that has a structure close to the structure of A1 and A2, but is not A1 or A2.