Cross-linked organopolysiloxanes and emulsions based thereon

Claim 2

An organopolysiloxane-polyoxyalkylene emulsifier comprising: at least two organopolysiloxane-polyoxyalkylene molecules cross linked by a cross linking radical having nonhydrolyzable bonds to the organopolysiloxane-­polyoxyalkylene molecules and being free of internal hydrolyzable bonds which under conditions inducing hydrolysis could result in separation of the two organopolysiloxane-­polyoxyalkylene molecules.

Claim 3

The emulsifier of claim 1 having the following general formula: where ME = CH₃-; R = 2 to 25 carbon aliphatic radical; R′ = organic or organosiloxane group which contains no hydrolyzable bonds, is not adversely reactive with the ingredients the emulsifier is to stabilize and does not interfere with the organopolysiloxane-polyoxyalkylene formation; R˝ = a terminal group which is not adversely reactive with the ingredients the emulsifier is to stabilize and does not interfere with the organopolysiloxane-polyoxyalkylene formation; R‴= 1 to 25 carbon aliphatic radical, which can be different for each different location; R₁ is independently selected from the group consisting of the hydrogen atom and 1-3 carbon aliphatic radicals, which can be different for each different location; x = 0-100; c = 1-5; z = 0-600; y = 1-10; x+y+z ≧ 40; a = 4-40; b = 0-40; a b ≧1.

Claim 6

The method of claim 3 in which the resulting cross linked organopolysiloxane-polyoxyalkylene emulsifier comprises the following general formula: where ME = CH₃-; R = 2 to 25 carbon aliphatic radical; R′ = organic or organosiloxane group which contains no hydrolyzable bonds, is not adversely reactive with the ingredients the emulsifier is to stabilize and does not interfere with the organopolysiloxane-polyoxyalkylene formation; R˝ = a terminal group which is not adversely reactive with the ingredients the emulsifier is to stabilize and does not interfere with the organopolysiloxane-polyoxyalkylene formation; R‴ = 1 to 25 carbon aliphatic radical, which can be different for each different location; R₁ is independently selected from the group consisting of the hydrogen atom and 1-3 carbon aliphatic radicals, which can be different for each different location; x = 0-100; c = 1-5; z = 0-600; y = 1-10; x+y+z ≧ 40; a = 4-40; b = 0-40; a b ≧1. said emulsifier being formed by the vinyl addition of the following ingredients to the silicon hydride component of an organopolysiloxane of the general formula where x = 0-100; c = 1-5; y = 1-10; and z = 0-600: (1) a vinyl terminated aliphatic radical precurser; (2) a divinyl terminated cross linking agent of the general formula: where R′ = organic or organosiloxane group which contains no hydrolyzable bonds, is not adversely reactive with the ingredients the emulsifier is to stabilize and does not interfere with the organopolysiloxane-polyoxyalkylene formation; R₁ = is hydrogen or a 1-3 carbon group; and R₂ = may be the same as R₁ or another of hydrogen or a 1-3 carbon group: and (3) a vinyl terminated polyoxyalkylene of the general formula: CH₂=CH-CH₂-O-(CH₂-CH₂-O) a (CH₂- -O) b R˝ where a = 4-40; b = 0-40; a b ≧1 ; and R˝ = a terminal group which is not adversely reactive with the ingredients the emulsifier is to stabilize and does not interfere with the organopolysiloxane-polyoxyalkylene formation.

Claim 7

The method of claim 4 in which all of said organopolysiloxane and only a portion of said vinyl terminated aliphatic radical precurser are introduced into a reaction vessel and reacted in the presence of a hydrosilation catalyst; followed by the introduction and reaction of said divinyl cross linking agent in the presence of a hydrosilation catalyst; followed by the introduction and reaction of said vinyl polyoxyalkylene in the presence of a hydrosilation catalyst; followed by a final addition of the remainder of said vinyl terminated aliphatic radical precurser, whereby the addition of only a portion of said vinyl terminated aliphatic radical precurser initially insures that cross linking will occur upon addition of said divinyl terminated cross linking agent.

Claim 8

Use of an organopolysiloxane-polyoxyalkylene emulsifier in a method for emulsifying polar in nonpolar liquid emulsions comprising introducing into a mixture thereof an emulsifying amount of an organopolysiloxane-­polyoxyalkylene emulsifier, characterized by , en emulsifier comprising at least two organopolysiloxane-­polyoxyalkylene molecules cross linked by a cross linking radical having nonhydrolyzable bonds to the organopolysiloxane-­polyoxyalkylene molecules and being free of internal hydrolyzable bonds which under conditions inducing hydrolysis could result in separation of the two organopoly­siloxane-polyoxyalkylene molecules.

Claim 9

Use of an organopolysiloxane-polyoxyalkylene emulsifier in a method for emulsifying polar in nonpolar liquid emulsions comprising introducing into a mixture thereof an emulsifying amount of an organopolysiloxane-­polyoxyalkylene emulsifier, characterized by , en emulsifier comprising at least two organopolysiloxane-­polyoxyalkylene molecules cross linked by a cross linking radical having nonhydrolyzable bonds to the organopolysiloxane-­polyoxyalkylene molecules and being free of internal hydrolyzable bonds which under conditions inducing hydrolysis could result in separation of the two organopoly­siloxane-polyoxyalkylene molecules.

Claim 10

The use of claim 6 in which said emulsifier has the following general formula: where ME = CH₃-; R = 2 to 25 carbon aliphatic radical; R′ = organic or organosiloxane group which contains no hydrolyzable bonds, is not adversely reactive with the ingredients the emulsifier is to stabilize and does not interfere with the organopolysiloxane-polyoxyalkylene formation; R˝ = a terminal group which is not adversely reactive with the ingredients the emulsifier is to stabilize and does not interfere with the organopolysiloxane-polyoxyalkylene formation; R‴ = 1 to 25 carbon aliphatic radical, which can be different for each different location; R₁ is independently selected from the group consisting of the hydrogen atom and 1-3 carbon aliphatic radicals, which can be different for each different location; x = 0-100; c = 1-5; z = 0-600; y = 1-10; x+y+z ≧ 40; a = 4-40; b = 0-40; a b ≧1.