US4277392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thickening agents for unsaturated polyester resin compositions
Assignee: KAY-FRIES Inc
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Filing: 1980-03-06
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Granted: 1981-07-07
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Expires: 2000-03-06
Abstract
Abstract A thickening agent for unsaturated polyester resin compositions comprises (a) 25% to 70% by weight of a Group II-A metal oxide or hydroxide and (b) 30% to 75% by weight of an unsaturated polyester vehicle comprising an unsaturated polyester that is the product of the reaction of a dicarboxylic acid component that contains at least one unsaturated aliphatic dicarboxylic acid and at least one saturated aromatic dicarboxylic acid with an alcohol component that contains at least one glycol and at least one monohydric alcohol.
Inventors
- 👤 Martin L. Feldman
- 👤 James T. De Groff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:00
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
A thickening agent for unsaturated polyester resin compositions that comprises (a) 25% to 70% by weight of a thickener that is a Group II-A metal oxide or hydroxide and (b) 30% to 75% by weight of an unsaturated polyester vehicle comprising an unsaturated polyester that is the product of the reaction of a dicarboxylic acid component containing 80 to 90 mole % of at least one unsaturated aliphatic dicarboxylic acid having 4 to 8 carbon atoms and 10 to 20 mole % of at least one saturated aromatic dicarboxylic acid with an alcohol component containing 40 to 60 mole % of at least one glycol having 2 to 6 carbon atoms and 40 to 60 mole % of at least one monohydric alcohol having 6 to 12 carbon atoms, in the amount of 0.4 mole to 0.6 mole of the dicarboxylic acid component per mole of the alcohol component.
Claim 2
Dependent Claim
149 words
A thickening agent for unsaturated polyester resin compositions that comprises (a) 25% to 70% by weight of a thickener that is a Group II-A metal oxide or hydroxide and (b) 30% to 75% by weight of an unsaturated polyester vehicle comprising an unsaturated polyester that is the product of the reaction of a dicarboxylic acid component containing 80 to 90 mole % of at least one unsaturated aliphatic dicarboxylic acid having 4 to 8 carbon atoms and 10 to 20 mole % of at least one saturated aromatic dicarboxylic acid with an alcohol component containing 40 to 60 mole % of at least one glycol having 2 to 6 carbon atoms and 40 to 60 mole % of at least one monohydric alcohol having 6 to 12 carbon atoms, in the amount of 0.4 mole to 0.6 mole of the dicarboxylic acid component per mole of the alcohol component.
Claim 3
Dependent Claim
23 words
A thickening agent for unsaturated polyester resin compositions as defined in claim 1 that contains 30% to 60% by weight of the thickener.
Claim 4
Dependent Claim
19 words
A thickening agent for unsaturated polyester resin compositions as defined in claim 1 wherein the thickener is magnesium oxide.
Claim 5
Dependent Claim
19 words
A thickening agent for unsaturated polyester resin compositions as defined in claim 1 wherein the thickener is magnesium hydroxide.
Claim 6
Dependent Claim
56 words
A thickening agent for unsaturated polyester resin compositions as defined in claim 1 wherein the unsaturated polyester vehicle contains an unsaturated polyester that is the product of the reaction of a dicarboxylic acid component containing 83 to 87 mole % of fumaric acid and 13 to 17 mole % of isophthalic acid with said alcohol component.
Claim 7
Dependent Claim
47 words
A thickening agent for unsaturated polyester resin compositions as defined in claim 1 wherein the unsaturated polyester vehicle contains an unsaturated polyester that is the product of the reaction of said dicarboxylic acid component with an alcohol component that contains equimolar amounts of ethylene glycol and 2-ethylhexanol.
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) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |