Method of curing a dual UV/thermally curable acrylate composition

Claim 2

The process of forming a cured product which comprises admixing a composition consisting essentially of (1) a liquid ethylenically unsaturated compound of the formula: ##STR6## wherein R is H or CH 3 , R 1 is an organic moiety and n is 2 to 4, (2) 0.0005 to 30% by weight of (1) of a photoinitiator, and (3) 0.01 to 5% by weight of (1) of a substituted or unsubstituted pinacol of the general formula: ##STR7## wherein R 1 and R 3 are members independently selected from the group consisting of substituted and unsubstituted aromatic radicals, R 2 and R 4 are members independently selected from the group consisting of substituted and unsubstituted aliphatic and aromatic radicals and X and Y are members independently selected from the group consisting of hydroxyl, alkoxy and aryloxy, exposing said composition to UV radiation having an intensity in the range 0.0004 to 60.0 watts/cm 2 in the 200-400 nanometer region and, thereafter, heating the composition to a temperature in the range 50°-250° C. for a time sufficient to obtain a cured solid product.

Claim 3

The process of forming a cured coating on a substrate which comprises admixing a composition consisting essentially of (1) a liquid ethylenically unsaturated compound of the formula: ##STR8## wherein R is H or CH 3 , R 1 is an organic moiety and n is 2 to 4, (2) 0.0005 to 30% by weight of (1) of a photoinitiator, and (3) 0.01 to 5% by weight of (1) of a substituted or unsubstituted pinacol of the general formula: ##STR9## wherein R 1 and R 3 are members independently selected from the group consisting of substituted and unsubstituted aromatic radicals, R 2 and R 4 are members independently selected from the group consisting of substituted and unsubstituted aliphatic and aromatic radicals and X and Y are members independently selected from the group consisting of hydroxyl, alkoxy and aryloxy, applying said admixture to a substrate as a coating having a thickness in the range 0.001 to 100 mils, exposing said coating to UV radiation having an intensity in the range 0.0004 to 60.0 watts/cm 2 in the 200-400 nanometer region and, thereafter, heating the composition to a temperature in the range 50°-250° C. for a time sufficient to obtain a cured solid product.

Claim 4

The process of forming a cured coating on a substrate which comprises admixing a composition consisting essentially of (1) a liquid ethylenically unsaturated compound of the formula: ##STR8## wherein R is H or CH 3 , R 1 is an organic moiety and n is 2 to 4, (2) 0.0005 to 30% by weight of (1) of a photoinitiator, and (3) 0.01 to 5% by weight of (1) of a substituted or unsubstituted pinacol of the general formula: ##STR9## wherein R 1 and R 3 are members independently selected from the group consisting of substituted and unsubstituted aromatic radicals, R 2 and R 4 are members independently selected from the group consisting of substituted and unsubstituted aliphatic and aromatic radicals and X and Y are members independently selected from the group consisting of hydroxyl, alkoxy and aryloxy, applying said admixture to a substrate as a coating having a thickness in the range 0.001 to 100 mils, exposing said coating to UV radiation having an intensity in the range 0.0004 to 60.0 watts/cm 2 in the 200-400 nanometer region and, thereafter, heating the composition to a temperature in the range 50°-250° C. for a time sufficient to obtain a cured solid product.

Claim 5

The process of forming a cured product which comprises admixing a composition consisting essentially of (1) a liquid ethylenically unsaturated compound of the formula: ##STR10## wherein R is H or CH 3 , R 1 is an organic moiety and n is 2 to 4, (2) 0.0005 to 30% by weight of (1) of a photoinitiator, and (3) 0.01 to 5% by weight of (1) of a substituted or unsubstituted pinacol of the general formula: ##STR11## wherein R 1 and R 3 are members independently selected from the group consisting of substituted and unsubstituted aromatic radicals, R 2 and R 4 are members independently selected from the group consisting of substituted and unsubstituted aliphatic and aromatic radicals and X and Y are members independently selected from the group consisting of hydroxyl, alkoxy and aryloxy, heating the composition to a temperature in the range 50°-250° C. and thereafter exposing said composition to UV radiation having an intensity in the range 0.0004 to 60.0 watts/cm 2 in the 200-400 nanometer region for a time sufficient to obtain a cured solid product.

Claim 6

The process of forming a cured product which comprises admixing a composition consisting essentially of (1) a liquid ethylenically unsaturated compound of the formula: ##STR10## wherein R is H or CH 3 , R 1 is an organic moiety and n is 2 to 4, (2) 0.0005 to 30% by weight of (1) of a photoinitiator, and (3) 0.01 to 5% by weight of (1) of a substituted or unsubstituted pinacol of the general formula: ##STR11## wherein R 1 and R 3 are members independently selected from the group consisting of substituted and unsubstituted aromatic radicals, R 2 and R 4 are members independently selected from the group consisting of substituted and unsubstituted aliphatic and aromatic radicals and X and Y are members independently selected from the group consisting of hydroxyl, alkoxy and aryloxy, heating the composition to a temperature in the range 50°-250° C. and thereafter exposing said composition to UV radiation having an intensity in the range 0.0004 to 60.0 watts/cm 2 in the 200-400 nanometer region for a time sufficient to obtain a cured solid product.