Silane coating composition for ambient cure

Claim 2

A curable resin having a number average molecular weight of 1,000 to 100,000 of a copolymer of a prepolymer (F) having a number average molecular weight of 550 to 1770 with a vinyl monomer (D), said prepolymer (F) having the formula (III): ##STR13## where R 4 is an alkyl, cycloalkyl, aryl or aralkyl group having 1 to 30 carbon atoms or a group having the formula (C 2 H 5 O) 3 --Si--(CH 2 ) 3 --; R 1 is an alkyl, aryl or aralkyl group having 1 to 10 carbon atoms; R 2 is a bivalent group having 1 to 10 carbon atom selected from the group consisting of alkylene, arylene and aralkylene groups; X is a hydrolyzable group selected from the group consisting of a halogen atom, an alkoxyl group, an acyloxyl group, a ketoxymate group, mercapto group and an alkenyloxy group; Z is a residue of an oligomer (A) having a number average molecular weight of 28 to 900 and having one group consisting of acryloyl group and one group consisting of a hydroxy group, n is an integer of 1 to 3, and m is an integer of 1 to 10.

Claim 3

A curable resin having a number average molecular weight of 1,000 to 100,000 of a copolymer of a prepolymer (C) having a number average average molecular weight of 500 to 1500 with a vinyl monomer (D), said prepolymer (C) having the formula (I): ##STR14## wherein R 1 is an alkyl, aryl or aralkyl group having 1 to 10 carbon atoms; R 2 is a bivalent group having 1 to 10 carbon atoms selected from the group consisting of alkylene, arylene and aralkylene groups; X is a hydrolyzable group selected from the group consisting of a halogen atom, an alkoxyl group, an acyloxyl group, a ketoxymate group, mercapto group and an alkenyloxy group; Y is --S-- or ##STR15## in which R 3 is hydrogen or an alkyl group having 1 to 10 carbon atoms, Z is a residue of an oligomer (A) having a number average molecular weight of 28 to 900 and having one group consisting of acryloyl group and one group consisting of a hydroxy group, n is an integer of 1 to 3, and m is an integer of 1 to 10.

Claim 4

A curable resin having a number average molecular weight of 1,000 to 100,000 of a copolymer of a prepolymer (C) having a number average average molecular weight of 500 to 1500 with a vinyl monomer (D), said prepolymer (C) having the formula (I): ##STR14## wherein R 1 is an alkyl, aryl or aralkyl group having 1 to 10 carbon atoms; R 2 is a bivalent group having 1 to 10 carbon atoms selected from the group consisting of alkylene, arylene and aralkylene groups; X is a hydrolyzable group selected from the group consisting of a halogen atom, an alkoxyl group, an acyloxyl group, a ketoxymate group, mercapto group and an alkenyloxy group; Y is --S-- or ##STR15## in which R 3 is hydrogen or an alkyl group having 1 to 10 carbon atoms, Z is a residue of an oligomer (A) having a number average molecular weight of 28 to 900 and having one group consisting of acryloyl group and one group consisting of a hydroxy group, n is an integer of 1 to 3, and m is an integer of 1 to 10.

Claim 5

The curable resin of claims 1 or 2 further comprising a difunctional silane crosslinker.

Claim 6

A process for preparing a prepolymer (C) having a number average average molecular weight of 500 to 1500 and having the formula (I): ##STR16## wherein R 1 is an alkyl, aryl or aralkyl group having 1 to 10 carbon atoms; R 2 is a bivalent group having 1 to 10 carbon atoms selected from the group consisting of alkylene, arylene and aralkylene group; X is a hydrolyzable group selected from the group consisting of a halogen atom, an alkoxyl group, an acyloxyl group, a ketoxymate group, mercapto group and an alkenyloxy group; Y is --S-- or ##STR17## in which R 3 is hydrogen or an alkyl group having 1 to 10 carbon atoms, Z is a residue of an oligomer (A) having a number average molecular weight of 28 to 900 and having one group consisting of acryloyl group and one group consisting of a hydroxy group, n is an integer of 1 to 3, and m is an integer of 1 to 10; comprising the following steps: (a) bringing into contact m-isopropenyl α,α-dimethylbenzyl isocyanate with a compound having hydroxyl functionality and acryloyl functionality under reaction conditions to form an oligomer (A) with α-methyl styrene functionality and acryloyl functionality; (b) bringing into contact the oligomer (A) from step (a) with a silane coupling agent (B) having the formula (II): ##STR18## wherein R 1 is an alkyl, aryl or aralkyl group having 1 to 10 carbon atoms; R 2 is a bivalent group having 1 to 10 carbon atoms selected from the group consisting of alkylene, arylene and aralkylene groups; X is a hydrolyzable group selected from the group consisting of a halogen atom, an alkoxyl group, an acyloxyl group, a ketoxymate group, mercapto group and an alkenyloxy group; Y is --S-- or ##STR19## in which R 3 is hydrogen or an alkyl group having 1 to 10 carbon atoms, n is an integer of 1 to 3, and m is an integer of 1 to 10.

Claim 7

A process for preparing a prepolymer (C) having a number average average molecular weight of 500 to 1500 and having the formula (I): ##STR16## wherein R 1 is an alkyl, aryl or aralkyl group having 1 to 10 carbon atoms; R 2 is a bivalent group having 1 to 10 carbon atoms selected from the group consisting of alkylene, arylene and aralkylene group; X is a hydrolyzable group selected from the group consisting of a halogen atom, an alkoxyl group, an acyloxyl group, a ketoxymate group, mercapto group and an alkenyloxy group; Y is --S-- or ##STR17## in which R 3 is hydrogen or an alkyl group having 1 to 10 carbon atoms, Z is a residue of an oligomer (A) having a number average molecular weight of 28 to 900 and having one group consisting of acryloyl group and one group consisting of a hydroxy group, n is an integer of 1 to 3, and m is an integer of 1 to 10; comprising the following steps: (a) bringing into contact m-isopropenyl α,α-dimethylbenzyl isocyanate with a compound having hydroxyl functionality and acryloyl functionality under reaction conditions to form an oligomer (A) with α-methyl styrene functionality and acryloyl functionality; (b) bringing into contact the oligomer (A) from step (a) with a silane coupling agent (B) having the formula (II): ##STR18## wherein R 1 is an alkyl, aryl or aralkyl group having 1 to 10 carbon atoms; R 2 is a bivalent group having 1 to 10 carbon atoms selected from the group consisting of alkylene, arylene and aralkylene groups; X is a hydrolyzable group selected from the group consisting of a halogen atom, an alkoxyl group, an acyloxyl group, a ketoxymate group, mercapto group and an alkenyloxy group; Y is --S-- or ##STR19## in which R 3 is hydrogen or an alkyl group having 1 to 10 carbon atoms, n is an integer of 1 to 3, and m is an integer of 1 to 10.

Claim 8

The process of claim 4 wherein said silane coupling agent (B) is added directly to a container containing the oligomer (A).