Curable composition

A curable composition, comprising:

• a polyether polymer (A) containing a reactive silyl group represented by the following formula (1);
• and at least one of a polyether polymer (B) containing a reactive silyl group represented by the following formula (2) and a (meth)acrylic polymer (C) containing a reactive silyl group represented by the following formula (3):
• —W—CH2—SiR1aR2bXc (1)
• wherein R1 is a methoxymethyl group;
• R2 represents a C1 to C20 hydrocarbon group, a C6 to C20 aryl group, a C7 to C20 aralkyl group, or a triorganosiloxy group represented by R03SiO— wherein each of three R0s is a C1 to C20 hydrocarbon group and they may be the same as or different from each other;
• X represents a hydroxy or hydrolyzable group;
• W represents a linking group selected from —O—R8—, —O—CO—N(R9)—, —N(R9)—CO—O—, —N(R9)—CO—N(R9)—, —S—CO—NH—, —NH—CO—S—, and —S— wherein R8 represents a divalent C1 to C8 hydrocarbon group, and R9 represents hydrogen or a C1 to C18 hydrocarbon group optionally substituted with halogen;
• in the case that W is —O—R8—, a is 1 or 2, b is 0 or 1, and c is 1 or 2, provided that a+b+c =3 is satisfied;
• in the case that W is a group other than —O—R8-, a is 0, 1, or 2, b is 0, 1, or 2, and c is 1, 2, or 3, provided that a+b+c=3 is satisfied;
• and in the case that a plurality of R1s, R2s, or Xs exist, they may be the same as or different from each other,
• —V—SiR2dX3-d (2)
• wherein R2 and X are defined as mentioned in formula (1);
• V represents a divalent C2 to C8 hydrocarbon group;
• d represents any of 0, 1, and 2;
• and in the case that a plurality of R2s or Xs exist, they may be the same as or different from each other, and
• —Z—(CH2)n—SiR1aR2bXc (3)
• wherein R1, of Formula (3) is a C1 to C20 hydrocarbon group wherein at least one hydrogen atom on carbon atoms at positions 1 to 3 is replaced with halogen, —OR3, —NR4R5, —N═R6, —SR7 (in which each of R3, R4, R5, and R7 is a hydrogen atom or a C1 to C20 substituted or unsubstituted hydrocarbon group, and R6 is a divalent C1 to C20 substituted or unsubstituted hydrocarbon group), a C1 to C20 perfluoroalkyl group, or a cyano group;
• R2, and X are defined as mentioned in formula (1);
• Z represents a linking group selected from —CO—O—, —O—CO—N(R9)—, —N(R9)—CO—O—, —N(R9)—CO—N(R9)—, —S—CO—NH—, —NH—CO—S—, and —S— wherein R9 is defined as mentioned in formula (1);
• n represents a number of 1 to 8;
• a is 0,1, or 2, b is 0, 1, or 2, and c is 1, 2, or 3, provided that the condition:
• a+b+c =3 is satisfied;
• and in the case that a plurality of R1s, R2s, or Xs exist, they may be the same as or different from each other.