Fast moisture curing and uv-moisture dual curing compositions
First Claim
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1. A composition comprising:
- a) a compound having the structural formula;
wherein R is a C1-20 alkyl which may be substituted or unsubstituted or an unsaturated free radical-curing group;
R1 is hydrogen or a C1-6 hydrocarbon radical;
R2 is a hydrolyzable group;
X is oxygen, R3 is H or C1-12 hydrocarbyl group; and
b) a polymer having the structure formula;
wherein A is a backbone selected from the group consisting of organic and siloxane backbones, and Re is CH3 or H.
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Abstract
The invention provides fast moisture and photo/moisture curing silicone ions and methods for the preparation thereof. More particularly, the compositions are prepared from silanol and silane cappers; the cappers have an α-carbon bonded to the silicon atom allowing for a favorable hypervalent silicon transition state when reacting the silane and silanol. This favorable transition state enables both a fast endcapping reaction and contributes to the fast moisture curing properties of the inventive compositions.
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Citations
20 Claims
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1. A composition comprising:
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a) a compound having the structural formula;
wherein R is a C1-20 alkyl which may be substituted or unsubstituted or an unsaturated free radical-curing group;
R1 is hydrogen or a C1-6 hydrocarbon radical;
R2 is a hydrolyzable group;
X is oxygen,R3 is H or C1-12 hydrocarbyl group; and
b) a polymer having the structure formula;
wherein A is a backbone selected from the group consisting of organic and siloxane backbones, and Re is CH3 or H. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A curable composition comprising the reaction product of
a) a compound having the structural formula: -
wherein R is a C1-20 alkyl which may be substituted or unsubstituted or an unsaturated free radical-curing group;
R1 is hydrogen or a C1-6 hydrocarbyl radical;
R2 is a hydrolyzable group;
X is oxygen,
R3 is H or C1-12 hydrocarbyl group; and
b) a polymer having the structure formula;
wherein A is a backbone selected from the group consisting of organic and siloxane backbones, and Re is CH3 or H. - View Dependent Claims (17, 18)
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19. A method of preparing a curable composition comprising the step of combining:
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a) a compound having the structural formula;
wherein R is a C1-20 alkyl which may be substituted or unsubstituted or an unsaturated free radical-curing group;
R1 is hydrogen or a C1-6 hydrocarbon radical;
R2 is a hydrolyzable group;
X is oxygen,
R3 is H or C1-12 hydrocarbyl group; and
b) a polymer having the structure formula;
wherein A is a backbone selected from the group consisting of organic and siloxane backbones, and Re is CH3 or H. - View Dependent Claims (20)
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Specification