Patent ID: 6103387
Filing Date: 2000-08-15
Classification: C08K,Y10T

Abstract:
A thermosetting composition which comprises:(A) a compound having in the molecule two or more functional groups of the formula (I): ##STR9## wherein R.sup.1, R.sup.2 and R.sup.3 are each selected from the group consisting of a hydrogen atom and an organic group of 1 to 18 carbon atoms, R.sup.4 is an organic group of 1 to 18 carbon atoms, Y.sup.1 is selected from the group consisting of an oxygen atom and a sulfur atom and R.sup.3 and R.sup.4 are optionally bonded with each other to form a heterocyclic structure which comprises Y.sup.1 as the hetero atom component;(B) a compound having in the molecule two or more reactive functional groups which can form chemical bond with the functional groups of the compound (A), the reactive functional groups are groups of at least one member selected from the group consisting of an epoxy group, an oxazoline group, a silanol group, an alkoxysilane group, a hydroxyl group, an amino group, an imino group, an isocyanate group, a blocked isocyanate group, a cyclocarbonate group, a vinyl ether group, a vinyl thioether group, an aminomethylol group, an alkylated aminomethylol group, an acetal group and a ketal group; and(C) at least one inorganic oxide sol selected from the group consisting of an aluminum oxide sol, a silica sol which is surface-treated with a silane coupling agent, a zirconium oxide sol and an antimony oxide sol; and optionally, (D) a thermal latent acid catalyst which is activated during curing of the composition by heating, the thermal latent acid catalyst is at least one member selected from the group consisting of a compound prepared by neutralizing a Bronsted acid or a Lewis acid with a Lewis base, a mixture of a Lewis acid and a trialkylphosphate, an ester of a sulfonic acid, an ester of phosphoric acid, an onium compound and a compound comprising (i) an epoxy group-containing compound, (ii) a sulfur atom-containing compound and (iii) a Lewis acid, and optionally (iv) a carboxylic acid, a carboxylic anhydride or a carboxylic acid and a carboxylic anhydride, andfurther comprising a solvent, said solvent consisting essentially of an organic solvent.