Patent US4222927A successfully refreshed from Google Patents.
US4222927A
Expired / Lapsed
US
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Dispersions of powders in unsaturated polyesters
Assignee: Bayer AG
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Filing: 1978-07-06
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Granted: 1980-09-16
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Expires: 1998-07-06
Abstract
Abstract alpha , beta -Ethylenically unsaturated polyesters obtained from dicarboxylic acids and monohydric and dihydric alcohols having acid numbers of 1-50 and hydroxyl numbers of 10-80, 1,5-2,5 mols of dicarboxylic acids and 1,5-2,5 mols of monohydric alcohols having been employed, per mol of diols, in their preparation, are an excellent basis for dispersions containing powdery insoluble substances.
Inventors
- 👤 Hansjochen Schulz-Walz
- 👤 Bernhard Hess
- 👤 Johannes Beckers
- 👤 Werner Kloker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:04
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08L; C08L67/00; C08L67/06; C08J2367/00; C08J2367/06; C08J2467/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
A dispersion, free from copolymerizable monomers, of 10-80% by weight of powder insoluble in polyester and 90-20% by weight of α,β-ethylenically unsaturated polyester which is the esterification product of dicarboxylic acid and mixture of monohydric and dihydric alcohols in a ratio of 1.5-2.5 moles of each of monohydric alcohol and dicarboxylic acid per mole of dihydric alcohol, said polyester having an acid number of 1-50 and a hydroxyl number of 10-80.
Claim 2
Dependent Claim
71 words
A dispersion, free from copolymerizable monomers, of 10-80% by weight of powder insoluble in polyester and 90-20% by weight of α,β-ethylenically unsaturated polyester which is the esterification product of dicarboxylic acid and mixture of monohydric and dihydric alcohols in a ratio of 1.5-2.5 moles of each of monohydric alcohol and dicarboxylic acid per mole of dihydric alcohol, said polyester having an acid number of 1-50 and a hydroxyl number of 10-80.
Claim 3
Dependent Claim
23 words
The dispersion of claim 1 which is a dispersion of 30-60% by weight of said powder and 70-40% by weight of said polyester.
Claim 4
Dependent Claim
14 words
Method of treating polyester resins by mixing therewith a dispersion according to claim 1.
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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |