US4673632A
Expired / Lapsed
US
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Hardening method for gelatin
Assignee: Fujifilm Holdings Corp
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Filing: 1985-04-23
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Granted: 1987-06-16
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Expires: 2005-04-23
Abstract
Abstract A hardening method for gelatin which comprises using as a hardening agent a compound represented by formula (I) ##STR1## wherein R 1 , R 2 , R 3 , and R 4 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; or two of said R 1 , R 2 , R 3 , and R 4 are combined with each other to form a ring (1); or 3 or more of said R 1 , R 2 , R 3 and R 4 are combined with each other to form a condensed ring (2); X represents a group capable of being released when the compound shown by formula (I) reacts with a nucleophilic reagent; Y.sup.⊖ represents an anion; or Y.sup.⊖ is combined with one of X, R 1 , R 2 , R 3 , and R 4 , ring (1), or ring (2) to form an anionic portion of an intramolecular salt.
Inventors
- 👤 Hisashi Okamura
- 👤 Hiroshi Kawamoto
- 👤 Hisashi Shiraishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:54
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/20; C07D295/215; C07C; C07C275/00; C07C275/70; C07D211/00; C07D211/04; C07D211/68; C07D211/72; C07D211/74; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
174 words
A hardening method for gelatin which comprises combining gelatin and, as a hardening agent a compound represented by formula (I): ##STR7## wherein R 1 , R 2 , R 3 , and R 4 , each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; or two of said R 1 , R 2 , R 3 , and R 4 are combined with each other to form a ring (1); or 3 or more of said R 1 , R 2 , R 3 and R 4 are combined with each other to form a condensed ring (2); X repreesnts a group which is released when the compound shown by formula (I) reacts with a carboxylic acid group; Y.sup.⊖ represents an anion; or Y.sup.⊖ is combined with one of X, R 1 , R 2 , R 3 , R 4 , ring (1), or ring (2) to form an anionic portion of an intramolecular salt.
Claim 2
Dependent Claim
174 words
A hardening method for gelatin which comprises combining gelatin and, as a hardening agent a compound represented by formula (I): ##STR7## wherein R 1 , R 2 , R 3 , and R 4 , each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; or two of said R 1 , R 2 , R 3 , and R 4 are combined with each other to form a ring (1); or 3 or more of said R 1 , R 2 , R 3 and R 4 are combined with each other to form a condensed ring (2); X repreesnts a group which is released when the compound shown by formula (I) reacts with a carboxylic acid group; Y.sup.⊖ represents an anion; or Y.sup.⊖ is combined with one of X, R 1 , R 2 , R 3 , R 4 , ring (1), or ring (2) to form an anionic portion of an intramolecular salt.
Claim 3
Dependent Claim
74 words
A hardening method as in claim 1, wherein the substituent of said substituted groups of R 1 , R 2 , R 3 , or R 4 includes a substituent atom or group selected from the group consisting of a halogen atom, an alkoxy group, an aryloxy group, and N,N-di-substituted carbamoyl group, and said N,N-di-substituted carbamoyl group has substituents selected from the group consisting of an alkyl group, aralkyl group, and an aryl group.
Claim 4
Dependent Claim
38 words
A hardening method as in claim 1, wherein at least one combination of two members selected from the group consisting of R 1 , R 2 , R 3 , and R 4 forms a nitrogen-containing heterocyclic ring.
Claim 5
Dependent Claim
34 words
A hardening method as in claim 1, wherein at least one combination of R 1 and R 2 , and R 3 and R 4 forms a 5 to 8 membered nitrogen-containing heterocyclic ring.
Claim 6
Dependent Claim
37 words
A hardening method as in claim 4, wherein said nitrogen-containing heterocyclic ring is a ring selected from the group consisting of a pyrrolidine ring, a piperadine ring, a perphydroazepine ring, a morpholine ring, and a pyrrole ring.
Claim 7
Dependent Claim
27 words
A hardening method as in claim 1, wherein R 1 and R 4 , and R 3 and R 4 are combined together to form pyrrolidine rings.
Claim 8
Dependent Claim
45 words
A hardening method as in claim 1, wherein a combination of R 1 and R 3 or R 2 and R 4 is combined together with the two nitrogen atoms N represented in formula (I) to form a 5 to 8 membered nitrogen-containing heterocyclic ring.
Claim 9
Dependent Claim
28 words
A hardening method as in claim 7, wherein said heterocyclic ring is selected from the group consisting of an imidazoline ring, a tetrahydropyrimidine ring, and a tetrahydrodiazepine ring.
Claim 10
Dependent Claim
32 words
A hardening method as in claim 1, wherein the compound having said condensed ring is reprensented by the formula; ##STR8## wherein X and Y.sup.⊖ are the same as defined in claim 1.
Claim 11
Dependent Claim
45 words
A hardening method as in claim 1, wherein X is an atom or group selected from the group consisting of a halogen atom, and a substituted or unsubstituted alkylsulfonyloxy group, a substituted or unsubstituted aralkylsulfonyloxy group, a substituted or unsubstituted arylsulfonyloxy group, and 1-pyperidinio group.
Claim 12
Dependent Claim
12 words
A hardening method as in claim 6, wherein X is chlorine atom.
Claim 13
Dependent Claim
43 words
A hardening method as in claim 1, wherein Y.sup.⊖ is an anion selected from the group consisting of a halide ion, a sulfonate ion, a sulfate ion, a phosphonate ion, a phosphate ion, BF 4 .sup.⊖, ClO 4 .sup.⊖, and PF 6 .sup.⊖.
Claim 14
Dependent Claim
26 words
A hardening method as in claim 1, wherein said compound is used in an amount of from 0.01 to 20% by weight based on dry gelatin.
Claim 15
Dependent Claim
17 words
A hardening method as in claim 1, wherein said gelatin is contained in a light-sensitive photographic material.
Claim 16
Dependent Claim
18 words
A hardening method as in claim 14, wherein said light-sensitive photographic material is a silver halide photographic material.
Claim 17
Dependent Claim
50 words
A hardening method as in claim 15, wherein said compound is incorporated in at least one gelatin-containing layer selected from the group consisting of a silver halide emulsion layer, a subbing layer, a backing layer, a filter layer, an interlayer, and an overcoat layer of the silver halide photographic material.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |