US4066636A
Expired / Lapsed
US
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Method of hardening gelatin
Assignee: Fujifilm Holdings Corp
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Filing: 1977-02-01
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Granted: 1978-01-03
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Expires: 1997-02-01
Abstract
Abstract A method of hardening gelatin which comprises treating gelatin with a compound represented by the formula (I): ##STR1## wherein X represents a hydrogen atom, an alkyl group having 6 or less carbon atoms, an aryl group having 8 or less carbon atoms, a haloalkyl group having 2 or less carbon atoms, an alkoxy group having 10 or less carbon atoms, a halogen atom, a carboxy group, a sulfo group, a salt, an alkyl ester having 4 or less carbon atoms in the alkyl moiety or an amide of said carboxy or sulfo group, an acylamino group or a nitro group, n represents 1 or 2, and R represents a monovalent or divalent organic group.
Inventors
- 👤 Hidefumi Sera
- 👤 Kameji Nagao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:41
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C09; C09H; C09H7/00; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/305
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A method of hardening gelatin which comprises treating gelatin with a compound represented by the formula (I): ##STR4## wherein X represents a hydrogen atom, an alkyl group having 6 or less carbon atoms, an aryl group having 6 to 8 carbon atoms, a haloalkyl group having 1 to 2 carbon atoms, an alkoxy group having 10 or less carbon atoms, a halogen atom, a carboxy group, a sulfo group, a salt of a carboxy group or a sulfo group, an alkyl ester having 4 or less carbon atoms in the alkyl moiety or an amide of said carboxy and sulfo group, an acylamino group or a nitro group, n represents 1 or 2, and R represents a monovalent or divalent organic group.
Claim 2
Independent Claim
122 words
A method of hardening gelatin which comprises treating gelatin with a compound represented by the formula (I): ##STR4## wherein X represents a hydrogen atom, an alkyl group having 6 or less carbon atoms, an aryl group having 6 to 8 carbon atoms, a haloalkyl group having 1 to 2 carbon atoms, an alkoxy group having 10 or less carbon atoms, a halogen atom, a carboxy group, a sulfo group, a salt of a carboxy group or a sulfo group, an alkyl ester having 4 or less carbon atoms in the alkyl moiety or an amide of said carboxy and sulfo group, an acylamino group or a nitro group, n represents 1 or 2, and R represents a monovalent or divalent organic group.
Claim 3
Dependent Claim
42 words
The method of claim 1, wherein X is a hydrogen atom, a methyl group, an ethyl group, a phenyl group, a tolyl group, a trifluoromethyl group, a methoxy group, an ethoxy group, a benzyloxy group, a chlorine atom, or a bromine atom.
Claim 4
Dependent Claim
42 words
The method of claim 1, wherein R is an alkyl group having 10 or less carbon atoms, an alkylene group, an aralkyl group, an alkoxy group or a heterocyclic group, which may be unsubstituted or substituted with one or more halogen atoms.
Claim 5
Dependent Claim
27 words
The method of claim 1, wherein X is a hydrogen atom or a halogen atom; and R is an alkylene group having 1 to 8 carbon atoms.
Claim 6
Dependent Claim
49 words
The method of claim 1, wherein the compound represented by the formula (I) is incorporated into a gelatin layer and the amount of the compound represented by the formula (I) to the gelatin ranges from about 0.05 to about 30% weight based on the weight of the dry gelatin.
Claim 7
Dependent Claim
42 words
The method of claim 1, wherein said treating of gelatin is with a processing solution containing the compound represented by the formula (I) and the processing solution contains about 5% by weight or less of said compound represented by the formula (I).
Claim 8
Dependent Claim
83 words
The method of claim 1, wherein said gelatin is alkali-treated gelatin, acid-treated gelatin, partial hydrolysis products of gelatin, enzymatic decomposition products of gelatin, a gelatin derivative in which the amino groups, imino groups, hydroxy groups or carboxyl groups as functional groups in the gelatin molecule are reacted with other reactants containing a group capable of reacting with such groups, or a graft polymer of gelatin comprising the reaction product obtained on grafting a molecular chain of another high molecular weight material to gelatin.
References Cited (Backward Citations)
US3455892A
Cited
US4028320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |