Patent US2889292A successfully refreshed from Google Patents.
US2889292A
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Composition containing an alkyd resin and a polyamide resin derived from polymeric fat acids and an alkylene polyamine
Assignee: General Mills Inc
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Filing: 1954-12-22
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Granted: 1959-06-02
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Expires: 1974-12-22
Abstract
No abstract record available.
Inventors
- 👤 Dwight E Peerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:34
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/06; C08L77/08; C08K; C08K5/00; C08K5/02; C08K5/03; C08K5/04; C08K5/14; C08L67/00; C08L67/06; C08L79/00; C08L79/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A POLYAMIDE-POLYESTER COMPOSITION, THE ACTIVE REACTANTS OF WHICH CONSIST ESSENTIALLY OF (A) AN ALKYL RESIN OF A POLYCARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF MALEIC, FUMARIC, CITRACONIC, MESACONIC, ITACONIC, AND ACONITIC ACIDS AND (B) A POLYAMIDE DERIVED FROM POLYMERIC FAT ACIDS AND AN ALKYLENE POLYAMINE AT REACTION TEMPERATURES OF APPROXIMATELY 200* C, FOR APPROXIMATELY THREE HOURS, THE POLYAMIDE HAVING A MELT VISCOSITY IN THE APPROXIMATE RANGE OF 100 TO 2000 POISES AT 40*C. AND HAVING AN AMINE NUMBER OF AT LEAST 50, SAID AMINE NUMBER BEING AN EXPRESSION OF THE NUMBER OF MILLIGRAMS OF POTASSIUMS HYDROXIDE EQUIVALENT TO THE FREE AMINE GROUPS IN ONE GRAM OF THE POLYAMIDE.
Claim 2
Dependent Claim
109 words
A POLYAMIDE-POLYESTER COMPOSITION, THE ACTIVE REACTANTS OF WHICH CONSIST ESSENTIALLY OF (A) AN ALKYL RESIN OF A POLYCARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF MALEIC, FUMARIC, CITRACONIC, MESACONIC, ITACONIC, AND ACONITIC ACIDS AND (B) A POLYAMIDE DERIVED FROM POLYMERIC FAT ACIDS AND AN ALKYLENE POLYAMINE AT REACTION TEMPERATURES OF APPROXIMATELY 200* C, FOR APPROXIMATELY THREE HOURS, THE POLYAMIDE HAVING A MELT VISCOSITY IN THE APPROXIMATE RANGE OF 100 TO 2000 POISES AT 40*C. AND HAVING AN AMINE NUMBER OF AT LEAST 50, SAID AMINE NUMBER BEING AN EXPRESSION OF THE NUMBER OF MILLIGRAMS OF POTASSIUMS HYDROXIDE EQUIVALENT TO THE FREE AMINE GROUPS IN ONE GRAM OF THE POLYAMIDE.
References Cited (Backward Citations)
US2255313A
Cited
US2663649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |