Photopolymerizable elastomeric compositions with carbamated poly(vinyl alcohol) binder

Claim 2

A photopolymerizable elastomeric composition which comprises, based on the total composition: (1) 15 to 89 percent by weight of a carbamated poly(vinyl alcohol) polymeric binder wherein (a) 15 to 100 mole percent of the recurring units in said binder have the formula ##STR10## wherein R is NH 2 in some recurring units and at least one of OR 1 and NHR 1 in the remaining recurring units wherein OR 1 is the residue remaining after removal of a hydrogen atom from an alcohol which has a boiling point of greater than 100° C. at normal atmospheric pressure, with the proviso that said alcohol is compatible with said polymeric binder, and the ratio of (OR 1 +NHR 1 )/NH 2 is within the range of 0.05 to 1.0, and (b) 0 to 85 mole percent of the recurring units in said binder have a formula selected from the group consisting of ##STR11## with the proviso that no more than 12 mole percent of the recurring units in said binder have the formula ##STR12## (2) 10 to 70 percent by weight of a nongaseous, ethylenically unsaturated compound containing at least one terminal ethylenic group, said compound being capable of forming a high polymer by radical initiated chain-propagating addition polymerization, and being compatible with polymeric binder (1); and (3) 0.1 to 10 percent by weight of a thermally stable, radiation-sensitive, radical generating system, activatable by actinic radiation, which initiates polymerization of the unsaturated compound.

Claim 3

The photopolymerizable elastomeric composition of claim 1 wherein the composition contains 30 to 70 percent by weight of carbamated poly(vinyl alcohol) polymer binder, 20 to 40 percent by weight of ethylenically unsaturated compound having a boiling point of greater than 100° C. at atmospheric pressure, and 0.2 to 1 percent by weight of radical generating system.

Claim 4

The photopolymerizable elastomeric composition of claim 2 wherein 30 to 50 mole percent of the recurring units in said binder have the formula ##STR13## the ratio of (OR 1 +NHR 1 )/NH 2 is within the range of 0.1 to 0.3, and 50 to 70 mole percent of the recurring units in said binder have a formula selected from the group consisting of ##STR14##

Claim 5

A photopolymerizable element which comprises a substrate coated to a thickness of 0.5 to 250 mils with a photosensitive elastomeric composition which comprises, based on the total composition: (1) 15 to 89 percent by weight of a carbamated poly(vinyl alcohol) polymeric binder wherein (a) 15 to 100 mole percent of the recurring units in said binder have the formula ##STR15## wherein R is NH 2 in some recurring units and at least one of OR 1 and NHR 1 in the remaining recurring units wherein OR 1 is the residue remaining after removal of a hydrogen atom from an alcohol which has a boiling point of greater than 100° C. at normal atmospheric pressure, with the proviso that said alcohol is compatible with said polymeric binder, and the ratio of (OR 1 +NHR 1 )/NH 2 is within the range of 0.05 to 1.0, and (b) 0 to 85 mole percent of the recurring units in said binder have a formula selected from the group consisting of ##STR16## with the proviso that no more than 12 mole percent of the recurring units in said binder have the formula ##STR17## (2) 10 to 70 percent by weight of a nongaseous, ethylenically unsaturated compound containing at least one terminal ethylenic group, said compound being capable of forming a high polymer by radical initiated chain-propagating addition polymerization, and being compatible with polymeric binder (1); (3) 0.1 to 10 percent by weight of a thermally stable, radiation-sensitive, radical generating system, activatable by actinic radiation, which initiates polymerization of the unsaturated compound.

Claim 6

A photopolymerizable element which comprises a substrate coated to a thickness of 0.5 to 250 mils with a photosensitive elastomeric composition which comprises, based on the total composition: (1) 15 to 89 percent by weight of a carbamated poly(vinyl alcohol) polymeric binder wherein (a) 15 to 100 mole percent of the recurring units in said binder have the formula ##STR15## wherein R is NH 2 in some recurring units and at least one of OR 1 and NHR 1 in the remaining recurring units wherein OR 1 is the residue remaining after removal of a hydrogen atom from an alcohol which has a boiling point of greater than 100° C. at normal atmospheric pressure, with the proviso that said alcohol is compatible with said polymeric binder, and the ratio of (OR 1 +NHR 1 )/NH 2 is within the range of 0.05 to 1.0, and (b) 0 to 85 mole percent of the recurring units in said binder have a formula selected from the group consisting of ##STR16## with the proviso that no more than 12 mole percent of the recurring units in said binder have the formula ##STR17## (2) 10 to 70 percent by weight of a nongaseous, ethylenically unsaturated compound containing at least one terminal ethylenic group, said compound being capable of forming a high polymer by radical initiated chain-propagating addition polymerization, and being compatible with polymeric binder (1); (3) 0.1 to 10 percent by weight of a thermally stable, radiation-sensitive, radical generating system, activatable by actinic radiation, which initiates polymerization of the unsaturated compound.

Claim 7

The photopolymerizable element of claim 4 wherein the photosensitive elastomeric composition contains 30 to 70 percent by weight of carbamated poly(vinyl alcohol) polymeric binder, 20 to 40 percent by weight of ethylenically unsaturated compound having a boiling point of greater than 100° C. atmospheric pressure, and 0.2 to 1 percent by weight of radical generating system.

Claim 8

The photopolymerizable element of claim 5 wherein 30 to 50 mole percent of the recurring units in said binder have the formula ##STR18## the ratio of (OR 1 +NHR 1 )/NH 2 is within the range of 0.1 to 0.3, and 50 to 70 mole percent of the recurring units in said binder have a formula selected from the group consisting of ##STR19##