US3900218A
Expired / Lapsed
US
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Desensitizer composition
Assignee: Fujifilm Holdings Corp
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Filing: 1973-08-30
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Granted: 1975-08-19
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Expires: 1993-08-30
Abstract
Abstract A desensitizer composition for desensitizing a color developer capable of reaction with a substantially colorless color former to form a color containing as a desensitizer at least one of (a) a spiroacetal diamine compound represented by the following general formula: wherein R represents a hydrogen atom or an alkyl group, and R1 and R2 each represents a straight or branched chain alkylene residue, or (b) the reaction product of said spiroacetal diamine compound with a compound having at least one oxirane ring.
Inventors
- 👤 Akio Miyamoto
- 👤 Hiroharu Matsukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:55
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/128
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
48 words
A DEVELOPER SHEET COMPRISING A COLOR DEVELOPER LAYER AND A DESCENSITIZER COMPOSITION FOR DESENITIZING A COLOR DEVELOPER CAPABLE OF REACTION WITH A SUBSTANTIALLY COLORLESS COLOR FORMULA TO FORM ACOLOR CONTAINING AS A DESCENSITIZER AT LEAST ONE OF A. A SPIROACETAL DIAMINE COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
48 words
A DEVELOPER SHEET COMPRISING A COLOR DEVELOPER LAYER AND A DESCENSITIZER COMPOSITION FOR DESENITIZING A COLOR DEVELOPER CAPABLE OF REACTION WITH A SUBSTANTIALLY COLORLESS COLOR FORMULA TO FORM ACOLOR CONTAINING AS A DESCENSITIZER AT LEAST ONE OF A. A SPIROACETAL DIAMINE COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 3
Dependent Claim
14 words
The developer sheet of claim 1, wherein said desensitizer is said spiroacetal diamine compound.
Claim 4
Dependent Claim
27 words
The developer sheet of claim 1, wherein said desensitizer is said reaction product of said spiroacetal diamine compound with a compound having at least one oxirane ring.
Claim 5
Dependent Claim
28 words
The developer sheet of claim 1, wherein said alkyl group has from 1 to 20 carbon atoms and said alkylene residue has from 1 to 20 carbon atoms.
Claim 6
Dependent Claim
22 words
The developer sheet of claim 2, wherein said spiroacetal diamine compound is 3,9-bis(aminomethyl)-2,4,8,10-tetraoxaspiro(5,5)undecane, 3,9-bis(2-aminoethyl)-2,4,8,10-tetraoxaspiro(5,5)undecane, 3,9-diethyl-3,9-bis(2-aminoethyl)-2, 4,8,10-tetraoxaspiro(5,5)undecane, 3,9-bis(3-aminopropyl)-2,4,8, 10-tetraoxaspiro(5,5)undecane, 3,9-bis(4-aminobutyl)-2,4,8,10-tetraoxaspiro(5,5)undecane, 3,9-bis(5-aminobenzyl)-2,4,8,10-tetraoxaspiro(5,5)undecane, or 3,9-bis(1,1-dimethyl-4-aminobutyl)-2,4,8,10-tetraoxaspiro(5,5)undecane.
Claim 7
Dependent Claim
40 words
The developer sheet of claim 3, wherein said compound having at least one oxirane ring is an alkyl glycidyl ether, an allyl glycidyl ether, an alkylene oxide, an alicyclic epoxide, an epoxidized vegetable oil fatty acid, or an epoxidized glyceride.
Claim 8
Dependent Claim
26 words
The developer sheet of claim 6, wherein the molar ratio of said spiroacetal diamine to said compound having at least one oxirane ring is about 1:1.
Claim 9
Dependent Claim
33 words
A developer sheet as claimed in claim 1 comprising a support having thereon a color developer layer and a layer, at least in selected areas of said developer sheet, of said desensitizer composition.
Claim 10
Dependent Claim
30 words
The developer sheet of claim 1, wherein said color developer is a clay, an organic acid, an acidic polymer, a metal salt of an aromatic carboxylic acid, or mixtures thereof.
Claim 11
Dependent Claim
47 words
A PROCESS FOR DESENTIZING THE COLORATION GENERATED BY A COLOR FORMER CONTACTING A COLOR DEVELOPER WHICH COMPRISES APPLYING TO A LAYER OF SAID COLOR DEVELOPER A DESNITIZING COMPOSITION CONTAINING AS A DESENSITIZER AT LEAST ONE OF A. A SPIROACETAL DIAMINE COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 12
Dependent Claim
47 words
A PROCESS FOR DESENTIZING THE COLORATION GENERATED BY A COLOR FORMER CONTACTING A COLOR DEVELOPER WHICH COMPRISES APPLYING TO A LAYER OF SAID COLOR DEVELOPER A DESNITIZING COMPOSITION CONTAINING AS A DESENSITIZER AT LEAST ONE OF A. A SPIROACETAL DIAMINE COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 13
Dependent Claim
42 words
The process of claim 10, wherein said desensitizer composition is present in an amount of from about 0.5 to about 10 g/m2 on said color developer layer in the areas of said color developer layer containing said layer of said desensitizer composition.
Claim 14
Dependent Claim
27 words
The process of claim 10 wherein said alkyl group has from 1 to 20 carbon atoms and said alkylene residue has from 1 to 20 carbon atoms.
Claim 15
Dependent Claim
13 words
The process of claim 10 wherein said desensitizer is said spiroacetal diamine compound.
Claim 16
Dependent Claim
22 words
The process of claim 13 wherein saidi spiroacetal diamine compound is 3,9-bis(aminomethyl)-2,4,8,10-tetraoxazpiro(5,5) undecane, 3,9-bis(2-aminoethyl)-2,4,8,10-tetraoxaspiro(5, 5)undecane, 3,9-diethyl-3,9-bis(2-aminoethyl)-2,4,8,10-tetraoxaspiro(5,5)undecane, 3,9-bis(3-aminopropyl)-2,4,8,10-tetraoxaspiro(5,5)undecane, 3,9-bis (4-aminobutyl)-2,4,8,10-tetraoxaspiro(5,5)undecane, 3,9-bis(5-aminobenzyl)-2,4,8,10-tetraoxaspiro(5,5)undecane, or 3,9-bis(1,1-dimethyl-4-amInobutyl)-2,4,8,10-tetraoxaspiro(5,5)undecane.
Claim 17
Dependent Claim
26 words
The process of claim 10 wherein said desensitizer is said reaction product of said spiroacetal diamine compound with a compound having at least one oxirange ring.
Claim 18
Dependent Claim
39 words
The process of claim 15 wherein said compound having at least one oxirane ring is an alkyl glycidyl ether, an allyl glycidyl ether, an alkylene oxide, an alicyclic epoxide, an epoxidized vegetable oil fatty acid, or an epoxidized glyceride.
Claim 19
Dependent Claim
25 words
The process of claim 16 wherein the molar ratio of said spiroacetal diamine to said compound having at least one oxirane ring is about 1:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |