US4220707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin composition for image formation
Assignee: Asahi Kasei Corp
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Filing: 1978-04-24
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Granted: 1980-09-02
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Expires: 1998-04-24
Abstract
Abstract An epoxy resin composition comprising an epoxy compound having an average of one or more epoxy groups per molecule, an amine curing agent and a reductive metal compound or complex can produce excellent developed color images, and concave-convex images by energy irradiation. The epoxy resin composition can give excellent physical, chemical and electrical properties to the formed images and various inorganic and organic materials can be used as substrate.
Inventors
- 👤 Kaoru Ohmura
- 👤 Kiichiro Sasaguri
- 👤 Kazuo Toyomoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:05
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0385; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12; Y10S430/128
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
A process for forming concave-convex images which comprises applying a coating of an organic solvent solution containing an epoxy resin composition comprising (a) an epoxy compound having an average of one or more epoxy groups per molecule, (b) an amine curing agent selected from the group consisting of aromatic primary amines, aromatic secondary amines, aromatic tertiary amines, aliphatic amines, heterocyclic amines and alicyclic amines, and (c) a reductive metal compound selected from the group consisting of cupric bromide, ferric chloride, ferric bromide, tellurium tetrachloride, and ferric ammonium oxalate on a substrate, drying the said coating, exposing the dried coating to energy irradiation, curing the resulting coating with heating or at room temperature, and removing the uncured parts with a solvent.
Claim 2
Dependent Claim
120 words
A process for forming concave-convex images which comprises applying a coating of an organic solvent solution containing an epoxy resin composition comprising (a) an epoxy compound having an average of one or more epoxy groups per molecule, (b) an amine curing agent selected from the group consisting of aromatic primary amines, aromatic secondary amines, aromatic tertiary amines, aliphatic amines, heterocyclic amines and alicyclic amines, and (c) a reductive metal compound selected from the group consisting of cupric bromide, ferric chloride, ferric bromide, tellurium tetrachloride, and ferric ammonium oxalate on a substrate, drying the said coating, exposing the dried coating to energy irradiation, curing the resulting coating with heating or at room temperature, and removing the uncured parts with a solvent.
Claim 3
Dependent Claim
14 words
A process according to claim 1 wherein the reductive metal compound is ferric chloride.
Claim 4
Dependent Claim
27 words
A process according to claim 1 or 2 wherein the curing is carried out at a temperature of 60° to 200° C. for 5 to 60 minutes.
Claim 5
Dependent Claim
27 words
A process according to claim 1 or 2 wherein the curing is carried out at a temperature of 110° to 170° C. for 20 to 60 minutes.
Claim 6
Dependent Claim
35 words
A process according to claim 1 or 2 wherein the epoxy compound is a bisphenol A or F type epoxy resin, a novolac type epoxy resin or a glycidyl acrylate or methacrylate polymer or copolymer.
Claim 7
Dependent Claim
56 words
A process according to claim 1 or 2 wherein the amine curing agent is used in an amount of 0.5 to 70 parts by weight per 100 parts by weight of the epoxy compound and the reductive metal compound is used in an amount of 0.1 to 10 moles per mole of the amine curing agent.
References Cited (Backward Citations)
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US3709861A
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US3951769A
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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) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |