Ultraviolet light curable acrylic functional silicone compositions

Claim 2

An acrylic functional polyorganosiloxane composition comprising: the reaction product of (A) an omega-haloalkene; (B) a dialkylhydrogen chainstopped polydialkylalkylhydrogensiloxane copolymer; (C) an amount of precious metal catalyst effective for catalyzing a hydrosilation reaction between said alkene and said siloxane copolymer; and (D) an acrylic functional monomer.

Claim 3

A composition as in claim 1 wherein said omega-haloalkene is selected from the group consisting of gamma-chloropropene, 4-chloro-1-butene, 10-chloro-1-decene, and 3-chloro-2-methylpropene.

Claim 4

A composition as in claim 1 wherein said dimethylhydrogen chainstopped polydialkyl-alkylhydrogen siloxane copolymer has the general formula: ##STR5## wherein each R represents, independently, a monovalent hydrocarbon radical; R' represents, independently, a hydrogen atom or a monovalent hydrocarbon radical; y plus z is an integer of, approximately, 25 to 600 such that said copolymer has a viscosity of, approximately 20 to 5000 centipoise at 25° C. and a hydrogen content of 0.5 to 50 weight % based on methylhydrogen siloxy unit functionality.

Claim 5

A composition as in claim 1 wherein said precious metal catalyst is a complex of chloroplatinic acid and a compound selected from the group consisting of octyl alcohol and divinyltetramethyldisiloxane.

Claim 6

A composition as in claim 1 wherein said acrylic functional monomer is selected from the group consisting of acrylic acid, methacrylic acid, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, and pentaerythritoltriacrylate.

Claim 7

A composition as in claim 1 further comprising an amount of free radical photoinitiator effective for curing a 0.1 to 5.0 mil coating of said composition to a non-adherent film upon exposure to an amount of ultraviolet or electron beam radiation effective for curing said coating composition.

Claim 8

An article of manufacture comprised of a substrate and a film of 0.1 to 5.0 mils of the composition of claims 1 or 6 coated thereon.

Claim 9

An article as in claim 7 wherein said substrate is paper.

Claim 10

A process for providing acrylic functional polyorganosiloxane compositions comprising the steps of reacting (A) 1 to 50 parts by weight of an omega-chloro-1-alkene; (B) 50 to 99 parts by weight of a dialkylhydrogen chainstopped polydialkyl-alkylhydrogen siloxane copolymer and; (C) an amount of precious metal catalyst effective for catalysing a hydrosilation reaction between said alkene and said siloxane copolymer; and thereafter further reacting (D) 0.2 to 30 parts by weight of an acrylic functional moiety effective for providing a siloxane copolymer having 0.5 to 50 weight percent acrylic siloxy units.

Claim 11

A process for providing acrylic functional polyorganosiloxane compositions comprising the steps of reacting (A) 1 to 50 parts by weight of an omega-chloro-1-alkene; (B) 50 to 99 parts by weight of a dialkylhydrogen chainstopped polydialkyl-alkylhydrogen siloxane copolymer and; (C) an amount of precious metal catalyst effective for catalysing a hydrosilation reaction between said alkene and said siloxane copolymer; and thereafter further reacting (D) 0.2 to 30 parts by weight of an acrylic functional moiety effective for providing a siloxane copolymer having 0.5 to 50 weight percent acrylic siloxy units.

Claim 12

A process as in claim 9 wherein said omega-chloro-1-alkene is selected from the group consisting of gamma-chloropropene, 4-chloro-1-butene, 10-chloro-1-decene, and 3-chloro-2-methylpropene.

Claim 13

A process as in claim 9 wherein said dimethylhydrogen chainstopped polydialkyl-alkylhydrogen siloxane copolymer has the general formula: ##STR6## wherein each R represents, independently, a monovalent hydrogen atom or a monovalent hydrocarbon radical; y plus z is an integer of, approximately, 25 to 600 such that said copolymer has a viscosity of, approximately, 20 to 5000 centipoise at 25° C. and a hydrogen content of 0.5 to 50 weight % based on methylhydrogensiloxy unit functionality.

Claim 14

A process as in claim 9 wherein said precious metal catalyst is a complex of chloroplatinic acid and a compound selected from the group consisting of octyl alcohol and divinyltetramethyldisiloxane.

Claim 15

A process as in claim 9 wherein said acrylic functional monomer is selected from the group consisting of acrylic acid, methacrylic acid, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, and pentaerythritoltriacrylate.

Claim 16

A process as in claim 9 further comprising the steps of adding an amount of free radical photoinitiator effective for curing a 0.5 to 5.0 mil coating of said composition to a non-adherent film applying a coating of said composition to a substrate, and exposing said coating to an amount of ultraviolet or electron beam radiation effective for curing said coating.

Claim 17

A process for as in claim 14 wherein said free radical photoinitiator is selected from the group consisting of alkylbenzoin ethers, benzophenone, diethoxyacetophenone, and Michler's ketone.

Claim 18

A process for providing an article of manufacture comprised of a substrate and a film of 0.5 to 5.0 mils of the composition of claim 1 coated thereon.

Claim 19

A process for providing an article as in claim 16 wherein said substrate is paper.