Claims
- 1. A shear stable aminosilicone emulsion composition comprising:
a. water; b. emulsifier b. an amino polysiloxane; and c. at least one hydroxy carboxylic acid.
- 2. A composition according to claim 1 wherein the siloxane has a viscosity of from about 1 to 20,000 centipoises measured at 25° C., an amine content ranging from about 0.01% to 3% and has no silanol groups.
- 3. A composition according to claim 2 wherein the siloxane is MDaD*bM wherein D is O1/2Si(CH3)2O1/2; wherein D* is O1/2Si(CH3)QO1/2; and M is O1/2SiQj(CH3)3−j., a ranges in value from about 30 to 600, j=0 or 1; and b ranges in value from about 0 to 100, b+j>0 and a/(b+j) is 0.5 to 5, Q is a polyether, polyhydric, amine, epoxy, alkyl of C2-C18, or alkanol, but at least one Q is an amine, which amine may be of the formula, BN[B1O(CdH2dO)eR]2−zVz, each d is 2 to 4, each e is 0 to 15, z is 0 to 2, each V is a univalent group, B1 is an alkylene divalent bridging group on which there may be hydroxyl substituents, and B is a divalent bridging group.
- 4. A composition according to claim 1 wherein the hydroxy carboxylic acid is selected from the group consisting of glycolic acid, lactic acid, β-hydroxybutyric acid, and hydroxybenzoic acid.
- 5. A composition according to claim 1 wherein the amino polysiloxane has a polyether functionality.
- 6. A composition according to claim 1 wherein the emulsifier consists essentially of one or more non-ionic surfactants.
- 7. A composition according to claim 1 wherein the emulsifier is selected from the group consisting of polyoxyethylene alkyl ether, polyoxyethylene alkylphenol ether, polyoxyethylene alkyl ester, polyalkylene glycol and polyalkylene glycol modified polysiloxanes.
- 8. A process which comprises:
providing an aqueous emulsion comprising an emulsifier and an amino polysiloxane; and adding a shear stabilizing effective amount of at least one hydroxy carboxylic acid to the emulsion to impart shear stability to the emulsion.
- 9. The process of claim 8 wherein the amino polysiloxane corresponds to the formula MDaD*bM wherein D is O1/2Si(CH3)2O1/2; wherein D* is O1/2Si(CH3)QO1/2; and M is O1/2SiQj(CH3)3−j, a ranges in value from about 30 to 600, j=0 or 1; and b ranges in value from about 0 to 100, b+j>0 and a/(b+j) is 0.5 to 5, Q is a polyether, polyhydric, amine, epoxy, alkyl of C2-C18, or alkanol, but at least one Q is an amine, which amine may be of the formula, BN[B1O(CdH2dO)eR]2−zVz, d is 2 to 4, e is 0 to 15, z is 0 to 2, V is a univalent group, B1 is an alkylene divalent bridging group on which there may be hydroxyl substituents, and B is a divalent bridging group.
- 10. A process according to claim 8 additionally comprising applying the shear stabilized emulsion to a substrate.
- 11. A process according to claim 10 wherein the substrate is a cellulosic fabric.
- 12. A process according to claim 8 wherein the hydroxy carboxylic acid is selected from the group consisting of glycolic acid, lactic acid, β-hydroxybutyric acid, and hydroxybenzoic acid.
- 13. A process according to claim 8 wherein the amino polysiloxane has polyether functionality.
- 14. A process according to claim 8 wherein the emulsifier consists essentially of one or more non-ionic surfactants.
- 15. A process according to claim 8 wherein the emulsifier is selected from the group consisting of polyoxyethylene alkyl ether, polyoxyethylene alkylphenol ether, polyoxyethylene alkyl ester, polyalkylene glycol and polyalkylene glycol modified polysiloxanes.
- 16. A process according to claim 8 wherein the hydroxy carboxylic acid is glycolic acid.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of U.S. application Ser. No. 09/250,330, filed Feb. 16, 1999.
Continuations (1)
|
Number |
Date |
Country |
Parent |
09250330 |
Feb 1999 |
US |
Child |
10226725 |
Aug 2002 |
US |