Silicone gum emulsion

Abstract

An essentially solvent free emulsion is described comprising about 10 parts to about 80 parts of a silicone gum; about 1 part to about 20 parts of an amino-functionalized organopolysiloxane; about 1 part to about 20 parts of a nonionic surfactant; about 0.01 to about 5 parts acid; optionally, a silicone polyether; and optionally, an aqueous solution to equal 100 parts.

What is claimed is: 
     
         1 . A homogenous stable emulsion comprising:
 about 10 parts to about 80 parts of a silicone gum;   about 1 part to about 20 parts of an amino-functionalized organopolysiloxane;   about 1 part to about 20 parts of a nonionic surfactant;   about 0.01 to about 5 parts acid;   optionally, a silicone polyether; and   optionally, an aqueous solution to equal 100 parts of total.   
     
     
         2 . The homogeneous stable emulsion of  claim 1 , wherein the silicone gum comprises about 50 to about 70 parts. 
     
     
         3 . The homogeneous stable emulsion of  claim 1 , wherein the silicone comprises about 65 parts. 
     
     
         4 . The homogeneous stable emulsion of  claim 1 , wherein the silicone gum comprises a homopolymer of dimethylsiloxane or is a hydroxyl terminated dimethylsiloxane. 
     
     
         5 . The homogeneous stable emulsion of  claim 1 , wherein the silicone gum is a polydimethylsiloxane gum having a viscosity of at least 10 million cP at 25° C. at 0.01 Hz. 
     
     
         6 . The homogeneous stable emulsion of  claim 1 , wherein the silicone gum is a hydroxy terminated polydimethylsiloxane gum having a viscosity of at least 10 million cP at 25° C. at 0.01 Hz. 
     
     
         7 . The homogeneous stable emulsion of  claim 1 , wherein the amino-functionalized organopolysiloxane comprises about 5 parts to about 15 parts. 
     
     
         8 . The homogeneous stable emulsion of  claim 7 , wherein the amino-functionalized organopolysiloxane comprises about 10 parts. 
     
     
         9 . The homogeneous stable emulsion of  claim 1 , wherein the amino-functionalized organopolysiloxane comprises the formula:
   [R 3 SiO 1/2 ][R 2 SiO 2/2 ] a [RR N SiO 2/2 ] b [R 3 SiO 1/2 ]   wherein; a is 1-1000;   b is 1-100;   each R is independently a monovalent organic group;   R N  is —R 3 NHR 4 , —R 3 NR 2   4 , or —R 3 NHR 3 NHR 4 ;   each R 3  is a C 2 -C 20  alkyl group; and   each R 4  is a hydrogen or a C 1 -C 20  alkyl group.   
     
     
         10 . The homogeneous stable emulsion of  claim 1 , wherein the amino-functionalized organopolysiloxane comprises a R 4 N + X −  quaternary ammonium siloxane. 
     
     
         11 . The homogeneous stable emulsion of  claim 1 , wherein the nonionic surfactant comprises a secondary alcohol ethoxylate. 
     
     
         12 . The homogeneous stable emulsion of  claim 1 , wherein the optional silicone polyether is present from about 2 parts to about 15 parts. 
     
     
         13 . The homogeneous stable emulsion of  claim 1 , wherein the optional silicone polyether is an ethylene oxide/propylene oxide block copolymer silicone glycol. 
     
     
         14 . The homogeneous stable emulsion of  claim 1 , wherein the acid is a carboxyl acid, organic acid or an inorganic mineral acid. 
     
     
         15 . The homogeneous stable emulsion of  claim 14 , wherein the acid is acetic acid. 
     
     
         16 . The homogeneous stable emulsion of  claim 1 , wherein the emulsion does not include an aromatic solvent. 
     
     
         17 . The homogeneous stable emulsion of  claim 1 , further comprising a non-aromatic solvent. 
     
     
         18 . The homogeneous stable emulsion of  claim 17 , wherein the non-aromatic solvent is a C 1 -C 20  alkyl or alkylene monohydridic or polyhydridic alcohol.