Thermosetting composition
AssigneeKanegafuchi Kagaku Kogyo Kabushiki Kaisha
InventorsToshiro Nambu, Hirotoshi Kawaguchi, Hisao Furukawa, Yasushi Kato
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Abstract
A composition including (A) a hydroxyl group-containing acrylic resin, (B) an acrylic copolymer containing an alkoxysilyl group having the formula (I): ##STR1## (C) a polyorganosiloxane and (D) a curing catalyst. The composition can give the film with excellent weatherability, stain resistance, acid resistance, water repellency and durability and with no bad-smelling odor.
Claims14
A composition comprising a blend of components (A), (B) and (C), wherein
- (A) is a hydroxyl group-containing acrylic resin which does not contain an alkoxysilyl group,
- (B) is an acrylic copolymer containing an alkoxysilyl group having the formula (I):
- ##STR10## wherein R.sup.1 is an alkyl group having 1 to 10 carbon atoms, R.sup.2 is a hydrogen atom, an alkyl group, an aryl group or an aralkyl group, and a is 0, 1 or 2,
- (C) is a polyorganosiloxane bearing one or more reactive groups selected from the group consisting of a silano group, an alkoxysilyl group, an alcoholic hydroxyl group, a glycidyl group, an amino group, a mercapto group a carboxyl group, an amide group, a vinyl group, an acryloyloxy group and a methacryloyloxy group and further comprising
- (D) a curing catalyst.
A composition comprising a blend of components (A), (B) and (C), wherein (A) is a hydroxyl group-containing acrylic resin which does not contain an alkoxysilyl group, (B) is an acrylic copolymer containing an alkoxysilyl group having the formula (I):
- ##STR12## wherein R.sup.1 is an alkyl group having 1 to 10 carbon atoms, R.sup.2 is a hydrogen atom, an alkyl group, an aryl group or an aralkyl group, and a is 0, 1 or 2,
- (C) is a polyorganosiloxane bearing one or more reactive groups selected from the group consisting of a silanol group, an alkoxysilyl group, an alcoholic hydroxyl group, a glycidyl group, an amino group, a mercapto group, a carboxyl group, an amide group, a vinyl group, an acryloyloxy group and a methacryloyloxy group and further comprising
- (D) a curing catalyst,
- wherein said acrylic resin (A) is an acrylic copolymer which contains a hydroxyl group derived from at least one member selected from the group consisting of an acrylic monomer containing a hydroxyl group, a methacrylic monomer containing a hydroxyl group, a polycaprolactone containing an acryloyl group and a polycaprolactone containing a methacryloyl group.
Dependencies are inferred from the claim text.