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US 11,992,549 B2Granted
Oil-in-water emulsion
AssigneeWacker Chemie AG
InventorsXinyu Liang, Zhiyuan Xu
Life of this patent
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Abstract
An oil-in-water emulsion and a method of preparing the oil-in-water emulsion. The oil-in-water emulsion includes a siloxane mixture, a natural oil, an emulsifier and water.
Claims18
An oil-in-water emulsion comprising:
- (a) a siloxane mixture, comprising (a1) a silicone compound having a dynamic viscosity at 25° C. of from 30,000 to 1,200,000 mPa·s and (a2) an amino-functional silicone having an amine number of from 1 to 50 mgKOH/g;
- (b) natural oil;
- (c) emulsifier;
- and
- (d) water;
- wherein ingredient (a1) is of the following formula:
- R1R22SiO(R22SiO)mSiR22R1
- wherein R2 is, identically or differently on each occurrence, a monovalent hydrocarbon group having from 1 to 18 carbon atoms;
- wherein R1 is, identically or differently on each occurrence, R2, hydroxyl group or a C1-C6alkoxy group;
- wherein the mass ratio of ingredient (b) to ingredient (a1) is 5:(4-32);
- and
- wherein the mass ratio of ingredient (b) to ingredient (a2) is 5:(1-8).
9 more elements
A method for preparing the oil-in-water emulsion, comprising:
- providing an oil-in-water emulsion comprising (a) a siloxane mixture, comprising (a1) a silicone compound having a dynamic viscosity at 25° C. of from 30,000 to 1,200,000 mPa·s and (a2) an amino-functional silicone having an amine number of from 1 to 50 mgKOH/g, (b) natural oil, (c) emulsifier, and (d) water, wherein ingredient (a1) is of the formula:
- R1R22SiO(R22SiO)mSiR22R1, wherein where R2 is, identically or differently on each occurrence, a monovalent hydrocarbon group having from 1 to 18 carbon atoms, wherein R1 is, identically or differently on each occurrence, R2, hydroxyl group or a C1-C6 alkoxy group;
- and
- wherein the mass ratio of ingredient (b) to ingredient (a1) is 5:(4-32);
- wherein the mass ratio of ingredient (b) to ingredient (a2) is 5:(1-8);
- and
- wherein the oil-in-water emulsion has a particle size of less than 500 nm.
4 more elements
Dependencies are inferred from the claim text.