Patent US4425207A successfully refreshed from Google Patents.
US4425207A
Expired / Lapsed
US
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Dual cure coating compositions
Assignee: UCB SA
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Filing: 1983-01-17
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Granted: 1984-01-10
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Expires: 2003-01-17
Abstract
Abstract Dual cure coating compositions are prepared by one of the following techniques: aminoplast crosslinking with residual hydroxy present on extended acrylated or UV cure polymers; oxidative crosslinking of backbone drying oil unsaturation following UV cure; or by employing UV chain extension via reaction of pendent allylic group with polymercaptans followed by a melamine heat cure. The coatings are cured by UV exposure followed by heating or air drying.
Inventors
- 👤 Rudolph H. Boeckeler
- 👤 James R. Prom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:58
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
55 words
A coating composition comprising: an epoxy modified polyester extended acrylate resin containing plural beta hydroxy alkyl acrylate groups and drying oil unsaturation; and a photopolymerization initiator for said resin, said initiator being selected from those initiators which decompose upon exposure to U.V. radiation to generate an acid catalyst for the cross-linking reaction of said resin.
Claim 2
Dependent Claim
55 words
A coating composition comprising: an epoxy modified polyester extended acrylate resin containing plural beta hydroxy alkyl acrylate groups and drying oil unsaturation; and a photopolymerization initiator for said resin, said initiator being selected from those initiators which decompose upon exposure to U.V. radiation to generate an acid catalyst for the cross-linking reaction of said resin.
Claim 3
Dependent Claim
19 words
The composition set forth in claim 1 wherein said extender comprises the reaction product of linseed oil fatty acid.
Claim 4
Dependent Claim
32 words
A method for curing the coating composition of claim 1 comprising exposing the composition to ultraviolet radiation and air curing the composition to permit oxidative crosslinking of the backbone drying oil unsaturation.
Claim 5
Dependent Claim
32 words
A method for curing the coating composition of claim 2 comprising exposing the composition to ultraviolet radiation and air curing the composition to permit oxidative crosslinking of the backbone drying oil unsaturation.
Claim 6
Dependent Claim
60 words
A coating composition comprising: a first resin containing pendent allyl groups; a polymercaptan reactive with said allylic groups of said first resin; a polymerization initiator for said reaction between said first resin and said polymerization; an aminoplast resin; and an acid catalyst for the reaction of said aminoplast resin and the reaction product of said polymerization and said first resin.
Claim 7
Dependent Claim
60 words
A coating composition comprising: a first resin containing pendent allyl groups; a polymercaptan reactive with said allylic groups of said first resin; a polymerization initiator for said reaction between said first resin and said polymerization; an aminoplast resin; and an acid catalyst for the reaction of said aminoplast resin and the reaction product of said polymerization and said first resin.
Claim 8
Dependent Claim
23 words
The composition set forth in claim 5 wherein said catalyst consists at least in part of the decomposition product of said polymerization initiator.
Claim 9
Dependent Claim
32 words
A method of curing the composition of claim 5 comprising exposing the composition to ultraviolet radiation and subsequently heating the composition to react the aminoplast resin with the ultraviolet radiation cured material.
Claim 10
Dependent Claim
32 words
A method of curing the composition of claim 6 comprising exposing the composition to ultraviolet radiation and subsequently heating the composition to react the aminoplast resin with the ultraviolet radiation cured material.
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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |