Moisture curable compositions
First Claim
1. A composition for forming a curable polymer composition comprising:
- (A) a polymer having at least a reactive silyl group;
(B) a crosslinker or chain extender; and
(C) a condensation accelerator comprising a guanidine-containing compound, wherein the guanidine-containing compound comprises a plurality of guanidine functional groups, the guanidine-containing compound being chosen from a compound of the formula (i) or (ii);
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Accused Products
Abstract
The present invention provides curable compositions comprising non-tin metal accelerators that accelerate the condensation curing of moisture-curable silicones/non-silicones. In particular, the present invention provides an accelerator comprising guanidine-containing compounds that are particularly suitable as replacements for organotin in sealant and RTV formulations. Further, the compositions employing a guanidine-containing compound is comparable or superior to organotin such as DBTDL, exhibits certain behavior in the presence of components that allow for tuning or adjusting the cure characteristics of the compositions, and provides good adhesion and storage stability.
46 Citations
32 Claims
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1. A composition for forming a curable polymer composition comprising:
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(A) a polymer having at least a reactive silyl group; (B) a crosslinker or chain extender; and (C) a condensation accelerator comprising a guanidine-containing compound, wherein the guanidine-containing compound comprises a plurality of guanidine functional groups, the guanidine-containing compound being chosen from a compound of the formula (i) or (ii); - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification