Curable composition
AssigneeKaneka Corporation
InventorsAyako Yano, Noriko Matsushita, Shintaro Komitsu
Life of this patent
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Abstract
The present invention has its object to provide a curable composition not containing any organotin type curing catalyst currently of concern because of the toxic feature thereof, or any volatile compound, excellent in curability and storage stability and, further, capable of providing cured products excellent in strength and elongation; the above object can be achieved by a curable composition which includes: an organic polymer (A) containing a hydrolyzable silyl group in a molecule; an amidine compound (B); and a compound (C) containing a sulfonyl group in a molecule.
Claims15
A curable composition comprising:
- 100 parts by weight of an organic polymer (A) containing, in a molecule, a reactive silyl group represented by a formula:
- —SiR1nX13-n,
- wherein each of the n R1 groups represents at least one group selected from the group consisting of C1-20 alkyl groups, C6-20 aryl groups, and C7-20 aralkyl groups, and each of the (3-n) X1s is independently either a hydroxyl group or a hydrolyzable group;
- 0.1 to 30 parts by weight of an amidine compound (B) represented by formula (1):
- R2N═CR3—NR42 (1)
- wherein each of R2, R3, and the two R4s is independently a hydrogen atom or an organic group;
- and
- 0.1 to 100 parts by weight of a compound (C) containing, in a molecule, a sulfonyl group represented by a formula:
- —S(═O)2—,
- wherein the amidine compound (B) is dissolved and/or dispersed in the sulfonyl group-containing compound (C), and
- a resultant product is mixed in the reactive silyl group-containing organic polymer (A).
A curable composition comprising:
- a reactive silyl group-containing organic polymer (A);
- an amidine compound (B);
- a sulfonyl group-containing compound (C);
- and
- a silane coupling agent (D),
- wherein the amidine compound (B) is dissolved and/or dispersed in the sulfonyl group-containing compound (C) and the silane coupling agent (D), and
- a resultant product is mixed in the reactive silyl group-containing organic polymer (A).
A curable composition, comprising:
- a reactive silyl group-containing organic polymer (A);
- an amidine compound (B);
- a sulfonyl group-containing compound (C);
- and
- a silane coupling agent (D),
- wherein the amidine compound (B) is dissolved and/or dispersed in the sulfonyl group-containing compound (C),
- thereafter, the silane coupling agent (D) is added to a resultant mixture of the amidine compound (B) and group-containing compound (C), and dissolved and/or dispersed in the resultant mixture, and
- a resultant product is mixed in the reactive silyl group-containing organic polymer (A).
Dependencies are inferred from the claim text.