Process for using photopolymerizable compositions

Claim 1

A method comprising: (1) applying to a surface the surface of a solid, unexposed photopolymerizable layer of a composition consisting essentially of: (a) a photoinitiator; (b) a macromolecular linear organic film-forming polymeric binder; and (c) a photopolymerizable monomer, with the following present: (i) 0.001 to 20 parts by weight, based on the weight of monomer, of nonperoxide photoinitiator, which is activatable by actinic radiation and thermally inactive at and below 85° C.; (ii) 10 to 95 parts by weight, based on the total weight of the photopolymerizable composition, of binder; and (iii) 5 to 90 parts by weight, based on the total weight of the photopolymerizable composition of an ethylenically unsaturated addition-polymerizable compound having a molecular weight of at least 150 and a boiling point of above 100° C. and having the formula: ##STR2## or (CH 2 ) n-2 ; and m and n are independently from 2 to 10; while the other surface of the layer has adhered thereto with low to moderate adherence a thin, flexible sheet support, then in either order; (2) exposing the layer, imagewise, to actinic radiation to form a polymeric image in the layer; (3) removing the sheet support from the resulting image-bearing layer; and (4) removing the unexposed areas of the layer to form a resist image of polymeric materials; and (5) permanently modifying the adjacent areas on said surface which are unprotected by the resist image by using a reagent capable of etching said areas or depositing a material on said areas.

Claim 2

A method comprising: (1) applying to a surface the surface of a solid, unexposed photopolymerizable layer of a composition consisting essentially of: (a) a photoinitiator; (b) a macromolecular linear organic film-forming polymeric binder; and (c) a photopolymerizable monomer, with the following present: (i) 0.001 to 20 parts by weight, based on the weight of monomer, of nonperoxide photoinitiator, which is activatable by actinic radiation and thermally inactive at and below 85° C.; (ii) 10 to 95 parts by weight, based on the total weight of the photopolymerizable composition, of binder; and (iii) 5 to 90 parts by weight, based on the total weight of the photopolymerizable composition of an ethylenically unsaturated addition-polymerizable compound having a molecular weight of at least 150 and a boiling point of above 100° C. and having the formula: ##STR2## or (CH 2 ) n-2 ; and m and n are independently from 2 to 10; while the other surface of the layer has adhered thereto with low to moderate adherence a thin, flexible sheet support, then in either order; (2) exposing the layer, imagewise, to actinic radiation to form a polymeric image in the layer; (3) removing the sheet support from the resulting image-bearing layer; and (4) removing the unexposed areas of the layer to form a resist image of polymeric materials; and (5) permanently modifying the adjacent areas on said surface which are unprotected by the resist image by using a reagent capable of etching said areas or depositing a material on said areas.