US4022726A
Expired / Lapsed
US
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Stoving lacquer systems having a high solids content and comprising an ε-caprolactone
Assignee: Bayer AG
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Filing: 1975-07-08
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Granted: 1977-05-10
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Expires: 1995-07-08
Abstract
Abstract Stoving lacquer systems having a high solids content contain a binder consisting of carboxyl and hydroxyl group-containing polyester or alkyd resin including an ε-caprolactone as a "reactive diluent", and an aminoplast resin as a cross-linking agent.
Inventors
- 👤 Karl Zabrocki
- 👤 Rolf Dhein
- 👤 Rolf Kiichenmeister
- 👤 Wolfgang Beer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:17
CPC Classifications
C; C09; C09D; C09D167/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
A stoving lacquer which comprises A. 65 to 85% by weight of a binder, based on the combined weight of (A) and (B) and B. 35 to 15% by weight of an aminoplast resin, based on the combined weight of (A) and (B), said binder consisting of i. 75 to 95% by weight of a polyester having a molecular weight between 600 and 5,000 and containing hydroxyl and carboxyl groups and ii. 25 to 5% by weight of an ε-caprolactone or of an ε-caprolactone in admixture with up to 50 mol % by weight of a polyhydroxyl compound having a molecular weight between about 66 and about 600.
Claim 2
Dependent Claim
108 words
A stoving lacquer which comprises A. 65 to 85% by weight of a binder, based on the combined weight of (A) and (B) and B. 35 to 15% by weight of an aminoplast resin, based on the combined weight of (A) and (B), said binder consisting of i. 75 to 95% by weight of a polyester having a molecular weight between 600 and 5,000 and containing hydroxyl and carboxyl groups and ii. 25 to 5% by weight of an ε-caprolactone or of an ε-caprolactone in admixture with up to 50 mol % by weight of a polyhydroxyl compound having a molecular weight between about 66 and about 600.
Claim 3
Dependent Claim
23 words
The stoving lacquer of claim 1 containing up to 20% by weight, based on the weight of (A), of an organic lacquer solvent.
Claim 4
Dependent Claim
14 words
The stoving lacquer of claim 1 wherein (i) is modified with a fatty acid.
Claim 5
Dependent Claim
49 words
The stoving lacquer of claim 3 wherein (i) is a ricenic or soya alkyd resin having an oil content of between 25 and 35% by weight, based on the weight of (i), an acid number of between 15 and 30 and an OH number of between 60 and 100.
References Cited (Backward Citations)
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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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |