Patent US4072639A successfully refreshed from Google Patents.
US4072639A
Expired / Lapsed
US
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Undercoating composition for polyesters containing epoxy compounds
Assignee: Fujifilm Holdings Corp
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Filing: 1976-03-05
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Granted: 1978-02-07
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Expires: 1996-03-05
Abstract
Abstract An undercoating composition for polyesters which contains a compound having two or more epoxy groups in its molecule and a molecular weight of about 1,000 or less.
Inventors
- 👤 Teruo Yamaguchi
- 👤 Hidefumi Sera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:44
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
156 words
An undercoating composition for photographic polyester film wherein the polyester is a condensation product of a dibasic aromatic acid and a glycol which contains (1) a compound having two or more epoxy groups in its molecule and a molecular weight of about 1,000 or less, said compound being represented by general formula (I): ##STR2## wherein R 1 to R 5 , which may be the same or different, represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents an integer of 2 to 6 and A represents a linear or cyclic group having n nitrogen atoms or n oxygen atoms where the nitrogen atoms or oxygen atoms are directly bonded to the glycidyl group, a 5- or 6-membered heterocyclic ring having two or more active nitrogen atoms in the ring, a nitrogen atom, a phosphate group or a sulfate group; and (2) water as a primary solvent or sole solvent.
Claim 2
Dependent Claim
156 words
An undercoating composition for photographic polyester film wherein the polyester is a condensation product of a dibasic aromatic acid and a glycol which contains (1) a compound having two or more epoxy groups in its molecule and a molecular weight of about 1,000 or less, said compound being represented by general formula (I): ##STR2## wherein R 1 to R 5 , which may be the same or different, represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, n represents an integer of 2 to 6 and A represents a linear or cyclic group having n nitrogen atoms or n oxygen atoms where the nitrogen atoms or oxygen atoms are directly bonded to the glycidyl group, a 5- or 6-membered heterocyclic ring having two or more active nitrogen atoms in the ring, a nitrogen atom, a phosphate group or a sulfate group; and (2) water as a primary solvent or sole solvent.
Claim 3
Dependent Claim
33 words
The undercoating composition as claimed in claim 1, which further comprises a surfactant in an amount of about 0.01 to about 0.2% by weight based on a total amount of the undercoating composition.
Claim 4
Dependent Claim
35 words
The undercoating composition as claimed in claim 1, which further contains a hydrophilic organic colloid in an amount of about 0.01 to about 2.5% by weight based on a total amount of the undercoating composition.
Claim 5
Dependent Claim
36 words
The undercoating composition as claimed in claim 1, which further comprises a swelling agent for polyesters in an amount of about 0.5 to about 15% by weight based on a total amount of the undercoating composition.
Claim 6
Dependent Claim
18 words
The undercoating composition of claim 1 wherein A represents a linear or cyclic group having n nitrogen atoms.
Claim 7
Dependent Claim
34 words
The undercoating composition of claim 1 wherein said compound represented by general formula (I) is obtained from olefins through ozone oxydation or peroxydation or obtained by the reaction of alcohols and epihalohydrins or methylepihalohydrins.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |