Patent US4038340A successfully refreshed from Google Patents.
US4038340A
Expired / Lapsed
US
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Unsaturated polyester resins which have radicals of monohydric alcohols as terminal groups
Assignee: Bayer AG
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Filing: 1976-06-18
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Granted: 1977-07-26
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Expires: 1996-06-18
Abstract
Abstract Unsaturated polyester resins, the polyesters of which contain 0.3 - 0.7 moles, relative to the alcohol component, of units of monohydric alcohols are outstandingly suitable for the production of cured lacquer films which are uniformly matt without matting additives when a barrier agent is used.
Inventors
- 👤 Walter Frank
- 👤 Karl Raichle
- 👤 Otto Bendszus
- 👤 Manfred Patheiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:19
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C09; C09D; C09D167/00; C09D167/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
Polyester resins which contain barrier agents and are based on A. 60-90% by weight, based on the sum of components (A) and (B), of α, β-ethylenically unsaturated polyesters and B. 40-10% by weight, based on the sum of components (A) and (B), of copolymerisable monomers, characterised in that the polyesters (A) contain, per mol of polycarboxylic acid radical, in addition to 0.65-0.95 mol of radicals of polyhydric alcohols, 0.30-0.70 mol of radicals of monohydric alcohols with 1-16 carbon atoms, 0.25-0.55 mol of which possess an aromatic and/or cycloaliphatic ring with 5-12 carbon atoms, and that the molar ratio of OH groups to COOH groups of the components of the polyesters (A) should be at least 0.9.
Claim 2
Dependent Claim
116 words
Polyester resins which contain barrier agents and are based on A. 60-90% by weight, based on the sum of components (A) and (B), of α, β-ethylenically unsaturated polyesters and B. 40-10% by weight, based on the sum of components (A) and (B), of copolymerisable monomers, characterised in that the polyesters (A) contain, per mol of polycarboxylic acid radical, in addition to 0.65-0.95 mol of radicals of polyhydric alcohols, 0.30-0.70 mol of radicals of monohydric alcohols with 1-16 carbon atoms, 0.25-0.55 mol of which possess an aromatic and/or cycloaliphatic ring with 5-12 carbon atoms, and that the molar ratio of OH groups to COOH groups of the components of the polyesters (A) should be at least 0.9.
References Cited (Backward Citations)
US3402147A
Cited
US3578728A
Cited
US3822325A
Cited
US3898144A
Cited
US3819760A
Cited
US3907863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |