| 摘要 |
PROBLEM TO BE SOLVED: To provide a curable composition that prevents a cured product from becoming undesirably soft while inhibiting the exudation of a plasticizer from the cured product and achieves the improvement of elongation of the cured product. SOLUTION: The curable composition contains: 100 pts.mass of (A) a polymer having a reactive silicon group represented by -Si(OR<SP>1</SP>)<SB>3</SB>(wherein R<SP>1</SP>is a 1-6C monovalent organic group) and having a number average molecular weight of not less than 8,000 to not more than 50,000; and 1-200 pts.mass of (B) a polymer having on average not less than 0.8 to less than 1.2 reactive silicon groups represented by -Si(R<SP>2</SP>)(OR<SP>3</SP>)<SB>2</SB>(wherein R<SP>2</SP>is a 1-18C monovalent aliphatic hydrocarbon group; and R<SP>3</SP>is a 1-6C monovalent organic group) in a molecule and having a number average molecular weight being not less than 300 to not more than 15,000 and being smaller than the number average molecular weight of the polymer (A). COPYRIGHT: (C)2010,JPO&INPIT
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