Patent ID: 8013080

Claim:
A curable composition which comprises: (A) an organic polymer containing a silicon-containing group capable of crosslinking by siloxane bond formation and (B) a silanol condensation catalyst wherein the silanol condensation catalyst is an amine compound and an aqueous solution prepared by adding 5 millimoles of the amine compound to 100 g of a mixed solvent composed of isopropyl alcohol and water in a weight ratio of 10:3 has a pH value of not lower than 13.4 as measured at 23° C. according to JIS Z 8802, wherein the component (A) is at least one polymer selected from the group consisting of polyoxyalkylene polymers, saturated hydrocarbon polymers and (meth)acrylate ester polymers, and wherein the amine compound is at least one member selected from the group consisting of an amidine compound, a guanidine compound and a biguanide compound, and wherein the amidine compound is represented by the general formula (1): R 1 N═CR 2 —NR 3 2 (1) wherein R 1 , R 2 and the two R 3 moieties each independently is a hydrogen atom or a monovalent organic group and any two or more of R 1 , R 2 and the two R 3 moieties are bound together to form a ring structure, and the guanidine compound is at least one member selected from the group consisting of 1-methylguanidine, 1-n-butylguanidine, 1,1-dimethylguanidine, 1,1-diethylguanidine, 1,1,2-trimethylguanidine, 1,2,3-trimethylguanidine, 1,1,2,3,3-pentamethylguanidine, 2-ethyl-1,1,3,3-tetramethylguanidine, 1,1,3,3-tetramethyl-2-n-propylguanidine, 1,1,3,3-tetramethyl-2-isopropylguanidine, 2-n-butyl-1,1,3,3-tetramethylguanidine, 2-tert-butyl-1,1,3,3-tetramethylguanidine, 1,2,3-tricyclohexylguanidine, 7 -methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7 -ethyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7-n-propyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7-isopropyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7-n-butyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7-isobutyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7-tert-butyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7 -cyclohexyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7-n-octyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7-2-ethylhexyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene and 7-decyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene.