US4358477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of curing unsaturated epoxy coating composition with radiation and epoxy curing agent, and coated substrate
Assignee: Akzo NV
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Filing: 1979-09-05
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Granted: 1982-11-09
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Expires: 1999-09-05
Abstract
Abstract The invention relates to a radiation curable liquid coating composition based on (A) an epoxy compound containing an acryloyl and/or methacryloyl group, (B) a cross-linking agent for the epoxy groups of component (A) and a photoinitiator. The invention also relates to a process for coating a substrate with such a composition, and to the substrate thus manufactured.
Inventors
- 👤 Arie Noomen
- 👤 Johannes Mostert
- 👤 Egbert Wolters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:06
CPC Classifications
C; C09; C09D; C09D163/00; C09D163/10; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/81; C08G18/8141; C08G18/815; C08G18/8158; C08G18/8175; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08G59/18; C08G59/40; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
A process for coating a substrate which comprises applying to the substrate a radiation curable composition comprising (1) an epoxy compound which consists essentially of an epoxy compound which contains at least one acryloyl or methacryloyl group, (2) a photoinitiator, and (3) a cross-linking agent which reacts at ambient temperature with the epoxy groups of (1) and is a member selected from the group consisting of amines, polyaminoamides, aldimines, ketimines, and carboxylic acids physically blended together, exposing the resulting coating to U.V. radiation at an ambient temperature to polymerize the epoxy compound and chemically reacting the epoxy groups with the cross-linking agent.
Claim 2
Dependent Claim
102 words
A process for coating a substrate which comprises applying to the substrate a radiation curable composition comprising (1) an epoxy compound which consists essentially of an epoxy compound which contains at least one acryloyl or methacryloyl group, (2) a photoinitiator, and (3) a cross-linking agent which reacts at ambient temperature with the epoxy groups of (1) and is a member selected from the group consisting of amines, polyaminoamides, aldimines, ketimines, and carboxylic acids physically blended together, exposing the resulting coating to U.V. radiation at an ambient temperature to polymerize the epoxy compound and chemically reacting the epoxy groups with the cross-linking agent.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein the composition contains 0.1 to 10% by weight of the photoinitiator, based on the weight of the epoxy compound.
Claim 4
Dependent Claim
23 words
The process of claim 1 or 2 wherein the composition is exposed to radiation having a wave length of 90 to 600 nm.
Claim 5
Dependent Claim
35 words
The process of claim 1 wherein the acryloyl or methacryloyl groups are cured in a first step with ultra violet light and the epoxy groups are cured with the cross-linking agent in a second step.
Claim 6
Dependent Claim
27 words
The process of claim 1, characterized in that the cross-linking agent is used in an amount of 0.5 to 1.5 equivalents per equivalent of the epoxy compound.
Claim 7
Dependent Claim
27 words
The process of claim 1, characterized in that the cross-linking agent is used in an amount of 0.9 to 1.1 equivalents per equivalent of the epoxy compound.
Claim 8
Dependent Claim
20 words
A substrate provided with a cured coating composition obtained by the process according to claims 5, 6, 1 or 2.
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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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |