Coating composition containing a hydrolyzable silyl group containing vinylic polymer
First Claim
1. A curable coating composition comprising(A) from 10 to 99 parts by weight of a first component which is a silyl group-containing vinylic polymer having a number average molecular weight of at least 3,000, wherein at least about 60% of the units constituting the main chain of the silyl group-containing vinylic polymer are vinylic units, said polymer having at least one hydrolyzable silyl group at a terminal of the main chain or at a side chain in each molecule,(B) from 1 to 90 parts by weight of a second component which is different from said first component, said second component being an organic compound having a number average molecular weight of not larger than 3,000 and having at least two hydrolyzable silyl groups at terminals in each molecule, and(C) from 1 to 500 parts by weight of a silanol-containing organopolysiloxane having an average of at least one silanol group per molecule to 100 parts by weight of the total amount of the component (A) and the component (B).
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Abstract
A curable coating composition comprising
(A) from 10 to 99 parts by weight of a silyl group-containing vinylic polymer having a number average molecular weight of at least 3,000, the main chain thereof being substantially composed of a vinylic polymer chain and having at least one silicon atom bonded to a hydrolyzable group at a terminal of the main chain and/or at a side chain in each molecule,
(B) from 1 to 90 parts by weight of an organic compound having a number average molecular weight of not larger than 3,000 and having at least one silicon atom bonded to a hydrolyzable group at a terminal in each molecule, and
(C) from 1 to 500 parts by weight of silanol-containing organopolysiloxane having, on an average, at least one sianol group in one molecule to 100 parts by weight of the total amount of the component (A) and the component (B).
20 Citations
10 Claims
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1. A curable coating composition comprising
(A) from 10 to 99 parts by weight of a first component which is a silyl group-containing vinylic polymer having a number average molecular weight of at least 3,000, wherein at least about 60% of the units constituting the main chain of the silyl group-containing vinylic polymer are vinylic units, said polymer having at least one hydrolyzable silyl group at a terminal of the main chain or at a side chain in each molecule, (B) from 1 to 90 parts by weight of a second component which is different from said first component, said second component being an organic compound having a number average molecular weight of not larger than 3,000 and having at least two hydrolyzable silyl groups at terminals in each molecule, and (C) from 1 to 500 parts by weight of a silanol-containing organopolysiloxane having an average of at least one silanol group per molecule to 100 parts by weight of the total amount of the component (A) and the component (B).
Specification