US3446758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosettable resin from preformed linear polyester and a polyhydric alcohol
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1966-01-12
•
Granted: 1969-05-27
•
Expires: 1986-01-12
Abstract
No abstract record available.
Inventors
- 👤 Maria V Wiener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:37
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J11/18; C08J11/22; C08J11/24; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08J2367/00; C08J2367/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A METHOD COMPRISING TREATING A PRE-FORMED THERMOPLASTIC LINEAR POLYMERIC POLYESTER RESIN HAVING AN INTRINSIC VISCOSITY OF FROM ABOUT 0.4 TO ABOUT 1.2 BY REACTING A POLYHYDRIC ALCOHOL HAVING AT LEAST THREE HYDROXYL GROUPS THEREWITH AND POLYCONDENSING THE TREATED POLYMERIC POLYESTER IN THE PRESENCE OF THE SAID POLYHYDRIC ALCOHOL TO FORM A THERMOSETTABLE POLYESTER RESIN HAVING AN INTRINSIC VISCOSITY OF FROM ABOUT 0.15 TO ABOUT 0.6, WHEREIN THE SAID PRE-FORMED THERMOPLASTIC LINEAR POLYMERIC POLYESTER RESIN IS DERIVED FROM AT LEAST ONE DIOL SELECTED FROM THE GROUP CONSISTING OF ALKYLENE GLYCOLS AND CYCLOHEXANE DIMETHANOL AND AT LEAST ONE DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF AROMATIC DICARBOXYLIC ACIDS, ALIPHATIC DICARBOXYLIC ACIDSD AND CYCLOALIPHATIC DICARBOXYLIC ACIDS.
Claim 2
Independent Claim
114 words
A METHOD COMPRISING TREATING A PRE-FORMED THERMOPLASTIC LINEAR POLYMERIC POLYESTER RESIN HAVING AN INTRINSIC VISCOSITY OF FROM ABOUT 0.4 TO ABOUT 1.2 BY REACTING A POLYHYDRIC ALCOHOL HAVING AT LEAST THREE HYDROXYL GROUPS THEREWITH AND POLYCONDENSING THE TREATED POLYMERIC POLYESTER IN THE PRESENCE OF THE SAID POLYHYDRIC ALCOHOL TO FORM A THERMOSETTABLE POLYESTER RESIN HAVING AN INTRINSIC VISCOSITY OF FROM ABOUT 0.15 TO ABOUT 0.6, WHEREIN THE SAID PRE-FORMED THERMOPLASTIC LINEAR POLYMERIC POLYESTER RESIN IS DERIVED FROM AT LEAST ONE DIOL SELECTED FROM THE GROUP CONSISTING OF ALKYLENE GLYCOLS AND CYCLOHEXANE DIMETHANOL AND AT LEAST ONE DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF AROMATIC DICARBOXYLIC ACIDS, ALIPHATIC DICARBOXYLIC ACIDSD AND CYCLOALIPHATIC DICARBOXYLIC ACIDS.
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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) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |