Photopolymerizable mixture and recording material produced therefrom

Claim 2

A photopolymerizable mixture, consisting essentially of: (a) a polymeric binder, (b) an acrylate or alkacrylate or a polyhydric alcohol, comprising one or more groups which are photooxidizable on exposure in the presence of a photoreducible dye, and one or more urethane groups, (c) a photoreducible dye as a photoinitiator component, (d) a trihalomethyl compound which can be cleaved by irradiation, and (e) an acridine, phenazine or quinoxaline compound which acts as a photoinitiator.

Claim 3

A mixture as claimed in claim 1, wherein the acrylate or alkacrylate is a compound of the formula ##STR11## in which Q denotes ##STR12## R denotes an alkyl, hydroxyalkyl or aryl group, R 1 and R 2 each denote a hydrogen atom, an alkyl group or an alkoxyalkyl group, R 3 denotes a hydrogen atom, a methyl group or an ethyl group, X 1 denotes a saturated hydrocarbon group having 2 to 12 carbon atoms, X 2 dentoes a (c+1)-valent saturated hydrocarbon group in which up to 5 methylene groups may be replaced by oxygen atoms, D 1 and D 2 each denote a saturated hydrocarbon group having 1 to 15 carbon atoms, E denotes a saturated hydrocarbon group having 2 to 12 carbon atoms, a cycloaliphatic group which has 5 to 7 ring members and which contains up to 2 N, O or S atoms as ring members, an arylene group having 6 to 12 carbon atoms, or a heterocyclic aromatic group having 5 or 6 ring members, a denotes 0 or an integer from 1 to 4, E denotes a saturated hydrocarbon group having 2 to 12 carbon atoms, a cycloaliphatic group which has 5 to 7 ring members and which contains up to 2 N, O or S atoms as ring members, an arylene group having 6 to 12 carbon atoms, or a heterocyclic aromatic group having 5 or 6 ring members, a dentoes 0 or an integer from 1 to 4, b denotes 0 or 1, a+b is at least 1, c denotes an integer from 1 to 3, m denotes 2, 3 or 4, depending on the valency of Q, and n denotes an integer fro m 1 to m, it being possible for all radicals of the same definition to be identical to or different from one another.

Claim 4

A mixture as claimed in claim 2, wherein n=m.

Claim 5

A mixture as claimed in claim 2, wherein R 3 =CH 3 .

Claim 6

A mixture as claimed in claim 2, wherein a+b=1 or 2.

Claim 7

A mixture as claimed in claim 1, wherein the photoreducible dye is a xanthene, thiazine, pyronine, porphyrine or acridine dye.

Claim 8

A mixture as claimed in claim 6, wherein the xanthene dye is a compound of the formula II ##STR13## in which R 4 and R 9 are identical or different and denote hydrogen or halogen atoms, nitro or hydroxyl groups or groups of the formula --HgOH, R 6 and R 7 are identical or different and denote hydrogen or halogen atoms or hydroxyl groups, R 5 denotes 0 or ( + )NHalkyl X( - ), R 8 denotes a hydrogen atom, an alkali metal, ammonium or trialkylammonium cation, or an alkyl or acyl group, R 10 denotes a hydrogen atom or a COOR 13 group, R 11 denotes a hydrogen or halogen atom or an amino group, R 12 denotes a hydrogen or halogen atom, R 13 denotes a hydrogen atom, an alkali metal or ammonium cation, an alkyl group or a polymeric radical, X denotes an anion, and d denotes zero or an integer from 1 to 3.

Claim 9

A mixture as claimed in claim 7, wherein the dye is a compound of one of the formulae III and IV ##STR14## in which R 14 is one of the groups ═NH 2 ( + ) X( - ), ═NHalkyl( + ) X( - ) and ═N(alkyl) 2 ( + ) X( - ) R 15 is an amino, alkylamino or dialkylamino group and X is an anion.

Claim 10

A mixture as claimed in claim 1, wherein the trihalomethyl compound which can be cleaved by irradiation is selected from the group consisting of an s-triazine substituted by at least one trihalomethyl group and one further group and an aryl trihalomethyl sulfone.

Claim 11

A mixture as claimed in claim 9, wherein the further group contains at least one aromatic ring which is connected to the triazine radical either directly or via a conjugated double bond system.

Claim 12

A mixture as claimed in claim 1, wherein the binder is insoluble in water and soluble in aqueous-alkaline solutions.

Claim 13

A mixture as claimed in calim 2, wherien a=0 in not more than one radical.

Claim 14

A mixture as cliamed in claim 2, wherein a=1.

Claim 15

A photopolymerizable mixture, comprising: about 10% to 80% by weight of an acrylate or alkacrylate of a polyhydric alcohol, comprising one or more groups which are photooxidiozable on exposure in the presence of a photoreducible dye, and one or more urethane groups, about 20% to 90% by weight of polymeric binder, and about 0.05% to 20% by weight, relative to the nonvolatile components of the mixture, of radiation-activatable polymerization initiators comprising (1) a photoreducible dye as a photoinitiator component (2) a trihalomethyl compoudn whcih an be cleaved by irradiation, and (3) an acridine, phenazine or quinoxaline compound which acts as a photoinitiator.

Claim 16

A photopolymerizable mixture, comprising: about 10% to 80% by weight of an acrylate or alkacrylate of a polyhydric alcohol, comprising one or more groups which are photooxidiozable on exposure in the presence of a photoreducible dye, and one or more urethane groups, about 20% to 90% by weight of polymeric binder, and about 0.05% to 20% by weight, relative to the nonvolatile components of the mixture, of radiation-activatable polymerization initiators comprising (1) a photoreducible dye as a photoinitiator component (2) a trihalomethyl compoudn whcih an be cleaved by irradiation, and (3) an acridine, phenazine or quinoxaline compound which acts as a photoinitiator.

Claim 17

A photopolymerizable mixture as claimed in claim 1, which additionally contains a dibenzal acetone or coumarine compound (f).

Claim 18

A photopolymerizable recording material having a layer support and a photopolYmerizable layer, wherein the photopolymerizable layer comprises a mixture as claimed in claim 1.

Claim 19

A photopolymerizable mixture comprising: (a) a polymeric binder, present in an amount sufficient to produce a uniform film, (b) an acrylate or alkacrylate of a polyhydric alcohol, comprising one or more groups which are photooxidizable on exposure in the presence of a photoreducible dye, and one or more urethane groups present in an amount sufficient to render exposed areas of said photopolymerizable mixture insoluble in developer solution, (c) a photoreducible dye as a photoinitiator component, (d) a trihalomethyl compound which can be cleaved by irradiation, and (e) an acridine, phenazine or quinoxaline compound which acts as a photoinitiator, wherein components c, d and e are present in an amount sufficient to increase the sensitivity of the mixture.

Claim 20

A photopolymerizable mixture comprising: (a) a polymeric binder, present in an amount sufficient to produce a uniform film, (b) an acrylate or alkacrylate of a polyhydric alcohol, comprising one or more groups which are photooxidizable on exposure in the presence of a photoreducible dye, and one or more urethane groups present in an amount sufficient to render exposed areas of said photopolymerizable mixture insoluble in developer solution, (c) a photoreducible dye as a photoinitiator component, (d) a trihalomethyl compound which can be cleaved by irradiation, and (e) an acridine, phenazine or quinoxaline compound which acts as a photoinitiator, wherein components c, d and e are present in an amount sufficient to increase the sensitivity of the mixture.

Claim 21

A photopolymerizable mixture as claimed in claim 1, wherein said acrylate or alkacrylate of a polyhydric alcohol and said photoinitiators are present in an amount sufficient to render exposed areas of said photopolymerizable mixture insoluble in developer solution.

Claim 22

A photopolymerizable mixture as claimed in claim 1, wherein said polymeric binder is present in an amount sufficient to produce a uniform film.