Composition curable at low temperature

Claim 1

A composition curable at a low temperature and characterized in that the composition comprises: (a) a nonaqueous dispersion of a particulate polymer insoluble in an organic liquid and prepared by polymerizing at least one radical-polymerizable unsaturated monomer in the organic liquid in the presence of a dispersion stabilizer resin, the stabilizer resin being at least one copolymer selected from the group consisting of a copolymer X and a vinyl copolymer Y, wherein said copolymer X comprises as its monomer components an oxiranecontaining vinyl monomer and an alkoxysilane-containing vinyl monomer represented by the formula ##STR48## wherein A is ##STR49## or ##STR50## R 1 is a hydrogen atom or methyl, R 2 is a bivalent aliphatic saturated hydrocarbon group having 1 to 6 carbon atoms, R 3 and R 4 are the same or different and are each phenyl, alkyl having 1 to 6 carbon atoms or alkoxyl having 1 to 10 carbon atoms, R 5 is alkyl having 1 to 10 carbon atoms, and n is an integer of from 1 to 10, and wherein said vinyl copolymer Y comprises: i) the polysiloxane macromonomer prepared by reacting about 70 to about 99.999 mole % of a compound (A) represented by the formula ##STR51## wherein R 6 is an aliphatic hydrocarbon group having 1 to 8 carbon atoms or phenyl, and R 7 , R 8 and R 9 are each alkoxyl having 1 to 4 carbon atoms or hydroxyl with about 30 to about 0.001 mole % of a compound (B) represented by the formula ##STR52## wherein R 10 is a hydrocarbon atom or methyl, R 11 , R 12 and R 13 are each hydroxyl, alkoxyl having 1 to 4 carbon atoms or an aliphatic hydrocarbon group having 1 to 8 carbon atoms, at least one of R 11 , R 12 and R 13 being hydroxyl or alkoxyl, and m is an integer of 1 to 6, the polysiloxane macromonomer having per molecule at least two functional groups selected from hydroxyl and the alkoxyl and being about 400 to about 100,000 in number average molecular weight, and ii) an oxirane-containing vinyl monomer, (b) a chelate compound admixed with the nonaqueous dispersion. dispersion.