| abstract |
A room temperature curing elastic composition useful as a sealing material which comprises as a main component a polymer produced from (a) at least one acrylic ester monomer of the formula: CH2=CHCOOR1 wherein R1 is an alkyl having 2 to 8 carbon atoms; (b) at least one member selected from the group consisting of vinylalkoxysilane of the formula: <IMAGE> wherein R2 is an alkyl having 1 to 4 carbon atoms, X is methoxy or ethoxy, and a is 0, 1 or 2; and a (meth)acryloxyalkoxysilane of the formula: <IMAGE> wherein R3 is hydrogen or methyl, R4 is a divalent hydrocarbon group, R5 is an alkyl having 1 to 4 carbon atoms, Y is methoxy or ethoxy, and b is 0, 1 or 2; and (c) a chain transfer agent having a mercapto group. |