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EP0223373A1
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Water-soluble photoinitiators
Assignee: MacDermid Autotype Ltd
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Filing: 1986-10-02
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Granted: —
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Expires: 2006-10-02
Abstract
Abstract Substituted dibenzatketones useful as watersoluble photoinitiators have the formula: wherein R' and R 2 are 4, alkyl or, taken together, an aliphatic ring, n = O or an integer and R 3 and R 4 either are both water-solubilising groups (a) -X(CH 2 ) m N + R 5 3 , (b) -X(CH 2 ) m COO - M or (c) -X(CH 2 ) m SO - 3 M or one is such a group and the other is (d) a group -NR 5 2 , X is -CH 2 - -O- or -S-, R 5 is an alkyl group, M is H + or a metal cation and m = O. Such a photoinitiator compound is associated with a polymerisable compound in an aqueous photopolymerisable composition.
Inventors
- 👤 John Arthur Sperry
- 👤 Ross Alexander Balfour
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 09:08
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12; Y10S430/122; Y10S430/124
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
158 words
An aqueous photopolymerisable composition, comprising (i) a polymerisable compound having at least one ethylenically-unsaturated bond and (ii) a photopolymerisation initiator, characterised in that the photopolymerisation initiator is a compound represented by the general formula: wherein R 1 and R 2 are the same or different and each is a hydrogen atom or an alkyl group or, taken together, R and R 2 are an aliphatic ring, n = 0 or an integer and R 3 and R 4 are the same or different and each is a water-solubilising group selected from: or or wherein X represents -CH 2 -, -0- or -S-, R is an alkyl group, M is H + or a metal cation and m = 0 or an integer from 1 to 6 and wherein, if one of R 3 and R is -NR 5 2 , the other of R 3 and R 4 is selected from the water-solubilising groups, (a), (b) and (c).
Claim 2
Dependent Claim
158 words
An aqueous photopolymerisable composition, comprising (i) a polymerisable compound having at least one ethylenically-unsaturated bond and (ii) a photopolymerisation initiator, characterised in that the photopolymerisation initiator is a compound represented by the general formula: wherein R 1 and R 2 are the same or different and each is a hydrogen atom or an alkyl group or, taken together, R and R 2 are an aliphatic ring, n = 0 or an integer and R 3 and R 4 are the same or different and each is a water-solubilising group selected from: or or wherein X represents -CH 2 -, -0- or -S-, R is an alkyl group, M is H + or a metal cation and m = 0 or an integer from 1 to 6 and wherein, if one of R 3 and R is -NR 5 2 , the other of R 3 and R 4 is selected from the water-solubilising groups, (a), (b) and (c).
Claim 3
Dependent Claim
25 words
An aqueous photopolymerisable composition according to claim 1, wherein the photopolymerisation initiator is selected from 2,2'-dicarboxymethoxydibenzalacetone, 2,2'-dicarboxymethoxydibenzalcyclohexanone, 4,4'-dicarboxymethoxydibenzalacetone, 4,4'-dicarboxymethoxydibenzalcyclohexanone, 4-dimethylamino-4'-carboxymethoxy- dibenzalacetone, 4,4'-disulphoxymethoxydibenzalacetone and their salts.
Claim 4
Dependent Claim
49 words
A light-sensitive composition for use in the production of polymeric resist images, which comprises: (a) an ethylenically-unsaturated monomer, dissolved or dispersed in: (b) a water-soluble colloid and which also contains: (c) a photoinitiator, characterised in that the photoinitiator (c) is a compound of the formula defined in claim 1.
Claim 5
Dependent Claim
26 words
A sheet material for the production of polymeric resist images, which comprises a support carrying a coating of a light-sensitive composition as defined in claim 3.
Claim 6
Dependent Claim
172 words
A chemical compound capable of reacting to light and thereby being useful as a photopolymerisation initiator characterised by having the general formula: wherein R and R are the same or different and each is a hydrogen atom or an alkyl group or, taken together, R and R are an aliphatic ring, n = 0 or an integer and R and R are the same or different and each is a group selected from: or or wherein X represents -CH 2 -, -0- or -S-, R is an alkyl group, M is H + or a metal cation and m = 0 or an integer from 1 to 6, wherein, when R 1 = R 2 = hydrogen and n = 0 , R 3 and R 4 are not both ortho-(CH 2 ,-CH 2 COOH) or both para-(O-CH 2 COOH) and, when one of R 3 and R 4 is (d), the other of R 3 and R 4 is selected from (a), (b) and (c), and metal salts of such compounds.
Claim 7
Dependent Claim
172 words
A chemical compound capable of reacting to light and thereby being useful as a photopolymerisation initiator characterised by having the general formula: wherein R and R are the same or different and each is a hydrogen atom or an alkyl group or, taken together, R and R are an aliphatic ring, n = 0 or an integer and R and R are the same or different and each is a group selected from: or or wherein X represents -CH 2 -, -0- or -S-, R is an alkyl group, M is H + or a metal cation and m = 0 or an integer from 1 to 6, wherein, when R 1 = R 2 = hydrogen and n = 0 , R 3 and R 4 are not both ortho-(CH 2 ,-CH 2 COOH) or both para-(O-CH 2 COOH) and, when one of R 3 and R 4 is (d), the other of R 3 and R 4 is selected from (a), (b) and (c), and metal salts of such compounds.
Claim 8
Dependent Claim
4 words
2,2'-Dicarboxymethoxydibenzalacetone and its salts.
Claim 9
Dependent Claim
4 words
2,2'-Dicarboxymethoxydibenzalacetone and its salts.
Claim 10
Dependent Claim
4 words
2,2'-Dicarboxymethoxydibenzalcyclohexanone and its salts.
Claim 11
Dependent Claim
4 words
2,2'-Dicarboxymethoxydibenzalcyclohexanone and its salts.
Claim 12
Dependent Claim
4 words
4,4'-Dicarboxymethoxydibenzalcyclohexanone and its salts.
Claim 13
Dependent Claim
4 words
4,4'-Dicarboxymethoxydibenzalcyclohexanone and its salts.
Claim 14
Dependent Claim
5 words
4-Dimethylamino-4'-carboxymethoxydibenzal- acetone and its salts.
Claim 15
Dependent Claim
5 words
4-Dimethylamino-4'-carboxymethoxydibenzal- acetone and its salts.
Claim 16
Dependent Claim
4 words
4,4'-Disulphoxyethoxydibenzalacetone and its salts.
Claim 17
Dependent Claim
4 words
4,4'-Disulphoxyethoxydibenzalacetone and its salts.
References Cited (Backward Citations)
US4505793A
Cited
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