Process for preparing colored photoresists

Claim 2

A photopolymerizable composition according to claim 2 wherein said colloidal carrier is gelatin.

Claim 3

A photopolymerizable composition according to claim 3 consisting essentially of gelatin, metahydroxy mandelic acid, acrylamide, N,N''-methylene-bisacrylamide and ferric ammonium citrate.

Claim 4

A photopolymerizable composition according to claim 3 consisting essentially of gelatin, hydroxy-carboxy-methyl-substituted malachite green, acrylamide, N,N''-methylene-bisacrylamide and ferric ammonium citrate.

Claim 5

In the process for preparing photoresists wherein a photopolymerizable composition comprising a water-soluble colloidal carrier, at least one ethylenically unsaturated monomer and a light-sensitive ferric salt is coated on a suitable support, dried, imagewise exposed to light, and then developed by washing in the presence of a peroxy compound, the improvement which comprises adding an alpha-hydroxy carboxylic acid selected from the group consisting of color couplers which yield a coloration with the oxidation products of a primary aromatic amine developer and alpha-hydroxy-carboxy-substituted dyestuffs to said photopolymerizable composition prior to exposure.

Claim 6

The process of claim 6 wherein the alpha-hydroxy carboxylic acid is a dye.

Claim 7

The process of claim 6 wherein the alpha-hydroxy carboxylic acid is a color coupler.

Claim 8

A photopolymerizable composition according to claim 1 containing a peroxy compound.

Claim 9

The process of preparing a colored photoresist which comprises image-wise exposing to light, a photopolymerizable layer on a support, said layer consisting essentially of a water-soluble colloidal carrier, at least one ethylenically unsaturated monomer, a light-sensitive ferric salt and an alpha-hydroxycarboxylic acid which is a color coupler yielding a coloration with the oxidation products of a primary aromatic amine developer, treating said layer with a peroxy compound, developing it with a primary aromatic amino developer solution, and treating it with the solution of an oxidizing agent selected from the group consisting of water-soluble ferricyanides and dichromates.

Claim 10

The process of preparing a colored photoresist according to claim 10 wherein said layer consists essentially of meta-hydroxy mandelic acid, gelatin, acrylamide, N,N''-methylenebisacrylamide and ferric ammonium citrate, said peroxy compound is hydrogen peroxide and said primary aromatic amino developer is N-ethyl-N-hydroxyethyl- para-phenylene diamine.

Claim 11

The process of preparing a colored photoresist which comprises image-wise exposing to light, a photopolymerizable layer on a support, said layer consisting essentially of a water-soluble colloidal carrier, at least one ethylenically unsaturated monomer, a light-sensitive ferric salt and an alpha-hydroxy-carboxy-substituted dyestuff, treating said layer with a peroxy compound and developing by washing with water.

Claim 12

The process of preparing a colored photoresist according to claim 12 wherein said layer consists essentially of gelatin, acrylamide, N,N''-methylenebisacrylamide, ferric ammonium citrate and hydroxy-carboxy-substituted malachite green, treating said layer with hydrogen peroxide, and developing by washing with water.