Patent US3297789A successfully refreshed from Google Patents.
US3297789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Half esters of aryl dialkanolamines as promoters for unsaturated polyester resins
Assignee: Individual
•
Filing: 1965-10-08
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Granted: 1967-01-10
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Expires: 1985-10-08
Abstract
No abstract record available.
Inventors
- 👤 Fekete Frank
- 👤 Patrick J Keenan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:28
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A POLYMERIZABLE COMPOSITION INCLUDING (A) POLYMERIZABLE POLYESTER OF GLYCOL AND DICARBOXYLIC ACID WHEREIN AT LEAST A PORTION OF THE DICARBOXYLIC ACID POSSESSES ALPHABETA ETHYLENIC UNSATURATION; (B) MONOMERIC CROSS-LINKING REAGENT HAVING AT LEAST ONE TERMINAL ETHYLENIC GROUP; (C) A SMALL ACTIVATING AMOUNT OF A HALF-ESTER FORMED FROM (A) DICARBOXYLIC ACID ANHYDRIDE SELECTED FROM THE CLASS CONSISTING OF THE ANHYDRIDES OF MALEIC, PHTHALIC, TETRACHLOROPHTHALIC, ENDOMETHYLENE TETRAHYDROPHTHALIC AND HEXACHLOROENDOMETHYLENE TETRAHYDROPHTHALIC ACIDS, AND (B) AN ARYL DIALKANOLAMINE; SAID COMPOSITION BEING PROLYMERIZABLE UPON THE ADDITION OF A PEROXY INITIATOR IN A SMALL BUT EFFECTIVE AMOUNT.
Claim 2
Dependent Claim
90 words
A POLYMERIZABLE COMPOSITION INCLUDING (A) POLYMERIZABLE POLYESTER OF GLYCOL AND DICARBOXYLIC ACID WHEREIN AT LEAST A PORTION OF THE DICARBOXYLIC ACID POSSESSES ALPHABETA ETHYLENIC UNSATURATION; (B) MONOMERIC CROSS-LINKING REAGENT HAVING AT LEAST ONE TERMINAL ETHYLENIC GROUP; (C) A SMALL ACTIVATING AMOUNT OF A HALF-ESTER FORMED FROM (A) DICARBOXYLIC ACID ANHYDRIDE SELECTED FROM THE CLASS CONSISTING OF THE ANHYDRIDES OF MALEIC, PHTHALIC, TETRACHLOROPHTHALIC, ENDOMETHYLENE TETRAHYDROPHTHALIC AND HEXACHLOROENDOMETHYLENE TETRAHYDROPHTHALIC ACIDS, AND (B) AN ARYL DIALKANOLAMINE; SAID COMPOSITION BEING PROLYMERIZABLE UPON THE ADDITION OF A PEROXY INITIATOR IN A SMALL BUT EFFECTIVE AMOUNT.
References Cited (Backward Citations)
US2812313A
Cited
GB833584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |