Curable adhesive composition

A method for reducing a solvent content in an adhesive curable composition comprising a solvent and a vinyl polymer having at least one crosslinkable silyl group represented by the general formula (1) as compared to a solvent content of a composition having the same viscosity and comprising a solvent and a polymer having a

• molecular weight distribution of at least 1.8:
• —[Si(R1)2-b(Y)bO]m—Si(R2)3-a(Y)a (1)
• wherein each R1 and R2 represents an alkyl group containing 1 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, an aralkyl group containing 7 to 20 carbon atoms or a triorganosiloxy group represented by the formula (R′)3SiO— wherein R′ represents a monovalent hydrocarbon group containing to 1 to 20 carbon atoms and the plural R′ groups may be the same or different and, when there are two or more R1 or R2 groups, they may be the same or different;
• Y represents a hydroxyl group or a hydrolyzable group and, when there are two or more Y groups, they may be the same or different;
• a represents 0, 1, 2 or 3;
• b represents 0, 1 or 2;
• and m represents an integer of 0 to 19;
• with the condition that a, b and m satisfy the relation a+mb≧1, comprising adjusting a weight average molecular weight-to-number average molecular weight ratio of said vinyl polymer to less than 1.8 as determined by gel permeation chromatography.