EP0046271A1
Expired / Lapsed
EP
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Photosensitive compositions and elements containing substituted hydroxylamine
Assignee: EIDP Inc
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Filing: 1981-08-12
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Granted: —
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Expires: 2001-08-12
Abstract
Abstract A photosensitive composition comprising a photooxidant, leuco dye and a substituted hydroxylamine compound of the formula R 1 R 2 NOH wherein R 1 and R 2 , e.g., are alkyl, cyclic alkyl, aryl, aralkyl, alkaryl and R 1 and R 2 taken together form a heterocyclic ring of 5 to 7 carbon atoms. Optionally monomers and polymeric binders can be present. The compositions are useful for photoimaging and in solvent and aqueous developable resist-forming films.
Inventors
- 👤 Mark Robert Mc Keever
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 11:27
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/105; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
165 words
A photosensitive composition comprising an admixture of (A) a photooxidant compound, (B) a leuco dye that is oxidizable to dye by the photooxidant, and (C) a hydroxylamine compound of the formula R 1 R 2 NOH, and acid salts thereof, wherein each of R 1 and R 2 can be hydrogen with the proviso that both cannot be hydrogen a linear or branched-chain alkyl group of 2 to 14 carbon atoms, a cyclic alkyl group of 5 to 14 carbon atoms, an aryl group of 6 to 10 carbon atoms, an aralkyl group wherein the aryl moiety is of 6 to 10 carbon atoms and the alkyl moiety is of 1 to 14 carbon atoms, and an alkaryl group wherein the aryl moiety is of 6 to 10 carbon atoms and the alkyl moiety is of 1 to 9 carbon atoms and R I and R 2 when taken together may with the nitrogen atom form a heterocyclic ring of 5 to 7 carbon atoms.
Claim 2
Dependent Claim
165 words
A photosensitive composition comprising an admixture of (A) a photooxidant compound, (B) a leuco dye that is oxidizable to dye by the photooxidant, and (C) a hydroxylamine compound of the formula R 1 R 2 NOH, and acid salts thereof, wherein each of R 1 and R 2 can be hydrogen with the proviso that both cannot be hydrogen a linear or branched-chain alkyl group of 2 to 14 carbon atoms, a cyclic alkyl group of 5 to 14 carbon atoms, an aryl group of 6 to 10 carbon atoms, an aralkyl group wherein the aryl moiety is of 6 to 10 carbon atoms and the alkyl moiety is of 1 to 14 carbon atoms, and an alkaryl group wherein the aryl moiety is of 6 to 10 carbon atoms and the alkyl moiety is of 1 to 9 carbon atoms and R I and R 2 when taken together may with the nitrogen atom form a heterocyclic ring of 5 to 7 carbon atoms.
Claim 3
Dependent Claim
23 words
A photosensitive composition according to claim 1 wherein (D) at least one addition polymerizable ethylenically unsaturated monomeric compound is present in the admixture.
Claim 4
Dependent Claim
22 words
A photosensitive composition according to Claim 1 or Claim 2 wherein (E) at least one polymeric binder is present in the admixture.
Claim 5
Dependent Claim
21 words
A photosensitive composition according to Claim 1 wherein an additional NOH group is attached to R 1 or R 2 .
Claim 6
Dependent Claim
22 words
A photosensitive composition according to Claim 1 wherein the photooxidant compound is a 2,4,5-triphenylimidazolyl dimer where the phenyl groups may be substituted.
Claim 7
Dependent Claim
13 words
A photosensitive composition according to Claim 5 wherein the 2,4,5-triphenylimidazolyl dimer is 2,2,'-bis-(o-chlorophenyl)-4,4,5,5'-tetraphenylbiimidazole.
Claim 8
Dependent Claim
15 words
A photosensitive composition according to Claim 1 wherein the photooxidant compound is a ketone compound.
Claim 9
Dependent Claim
14 words
A photosensitive composition according to Claim 7 wherein the ketone compound is Michler's ketone.
Claim 10
Dependent Claim
22 words
A photosensitive composition according to Claim 2 wherein the monomeric compound is trimethylolpropane triacrylate, triethylenegly- coldimethacrylate or a combination of both compounds.
Claim 11
Dependent Claim
22 words
A photosensitive composition according to Claim 3 wherein the polymeric binder is a combination of styrene/maleic anhydride copolymer and styrene/acrylic acid copolymer.
Claim 12
Dependent Claim
33 words
ll. A photosensitive composition according to Claim 1 wherein the hydroxylamine compound is of the formula R 1 R2NOH wherein R 1 and R 2 are alkyls of 2 to 14 carbon atoms.
Claim 13
Dependent Claim
13 words
A photosensitive composition according to Claim 11 wherein the hydroxylamine compound is N,N-diethylhydroxylamine.
Claim 14
Dependent Claim
68 words
A photosensitive composition according to Claim 1 wherein the leuco dye has one to two removable hydrogens, the removal of which forms a differently colored compound, with the proviso that when the leuco form has only one removable hydrogen and the resultant dye is cationic, there is also present a mineral acid, organic acid or acid-supplying compound which forms a salt with the leuco form of the dye.
Claim 15
Dependent Claim
71 words
A photosensitive composition according to Claim 13 wherein the leuco dye is the salt of an acid in leuco form of a triphenylmethane dye having, in at least two of the phenyl rings positioned para to the methane carbon atom, a substituent selected from the group consisting of amino, and C 1 to C 4 dialkyl amino groups, the acid being a mineral acid, an organic acid, or an acid-supplying compound.
Claim 16
Dependent Claim
23 words
A photosensitive element which comprises a support bearing a layer of a photosensitive composition according to any one of claims 1 to 14.
Claim 17
Dependent Claim
14 words
A photosensitive element according to Claim 15 wherein the support is a film support.
References Cited (Backward Citations)
No citation records indexed.
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