US4031047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-aqueous stoving lacquers containing ε-caprolactam as reactive diluent
Assignee: Bayer AG
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Filing: 1975-08-12
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Granted: 1977-06-21
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Expires: 1995-08-12
Abstract
Abstract Non-aqueous polyester and alkyd resin stoving lacquers containing ε-caprolactam as a so-called reactive diluent with a high solids content and containing correspondingly small quantities of volatile solvents and yield excellently hard coatings which are not brittle.
Inventors
- 👤 Rolf Dhein
- 👤 Karl Zabrocki
- 👤 Wolfgang Beer
- 👤 Rolf Kuchenmeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:19
CPC Classifications
C; C09; C09D; C09D167/00; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08L; C08L61/00; C08L61/20; C08L67/00; C09D7/00; C09D7/20; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A non-aqueous stoving lacquer containing a. 35-89% by weight, based on the sum of components (a) to (c), of a polyester with an oil content of from 0 to 50% by weight, based on component (a), an acid number of from 5 to 50, an OH number of from 70 to 450 and an average molecular weight determined by vapor pressure osmosis of from 300 to 6000; b. 10-40% by weight, based on the sum of components (a) to (c), of an aminoplast resin with an average molecular weight determined by vapor pressure osmosis of from 120 to 1250 and c. 1 to 25% by weight, based on the sum of components (a) to (c), of ε-caprolactam. the molar ratio of caprolactam to aminoplast resin being from 0.001:1 to 7:1.
Claim 2
Dependent Claim
130 words
A non-aqueous stoving lacquer containing a. 35-89% by weight, based on the sum of components (a) to (c), of a polyester with an oil content of from 0 to 50% by weight, based on component (a), an acid number of from 5 to 50, an OH number of from 70 to 450 and an average molecular weight determined by vapor pressure osmosis of from 300 to 6000; b. 10-40% by weight, based on the sum of components (a) to (c), of an aminoplast resin with an average molecular weight determined by vapor pressure osmosis of from 120 to 1250 and c. 1 to 25% by weight, based on the sum of components (a) to (c), of ε-caprolactam. the molar ratio of caprolactam to aminoplast resin being from 0.001:1 to 7:1.
References Cited (Backward Citations)
CA623925A
Cited
US2878201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |