US3042650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block polyesters and process for producing same
Assignee: Rohm and Haas Co
•
Filing: 1958-06-16
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Granted: 1962-07-03
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Theodore E Bockstahler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:57
CPC Classifications
C; C08; C08L; C08L67/00; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/52; C08L67/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR THE PREPARATION OF SUBSTANTIALLY LINEAR HIGH MOLECULAR WEIGHT UNSATURATED POLYESTERS WITH CONTROLLED MOLECULAR CONFIGURATION WHICH CONSISTS ESSENTIALLY OF REACTING A HIGH MOLECULAR WEIGHT LINEAR CONDENSATION POLYESTER FREE FROM NONBENZENOID UNSATURATION, THE MOLECULE CHAINS OF WHICH ARE TERMINATED WITH A GROUPING SELECTED FROM THE GROUP CONSISTING OF HYDROXYL AND CARBOXYL, WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A MONOGLYCOL ESTER OF A,B-MONOETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, A BISGLYCOL ESTER OF A,BMONOETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, AND A POLYESTER FORMED BY THE REACTION OF GLYCOLS OR MIXTURES THEREOF WITH A,B-MONOETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, SAID POLYESTER MOLECULE CHAINS BEING TERMINATED WITH A GROUPING SELECTED FROM THE GROUP CONSISTING OF HYDROXYL AND CARBOXYL, AT A TEMPERATURE OF FROM ABOUT 150* TO ABOUT 250*C.
Claim 2
Dependent Claim
122 words
A PROCESS FOR THE PREPARATION OF SUBSTANTIALLY LINEAR HIGH MOLECULAR WEIGHT UNSATURATED POLYESTERS WITH CONTROLLED MOLECULAR CONFIGURATION WHICH CONSISTS ESSENTIALLY OF REACTING A HIGH MOLECULAR WEIGHT LINEAR CONDENSATION POLYESTER FREE FROM NONBENZENOID UNSATURATION, THE MOLECULE CHAINS OF WHICH ARE TERMINATED WITH A GROUPING SELECTED FROM THE GROUP CONSISTING OF HYDROXYL AND CARBOXYL, WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A MONOGLYCOL ESTER OF A,B-MONOETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, A BISGLYCOL ESTER OF A,BMONOETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, AND A POLYESTER FORMED BY THE REACTION OF GLYCOLS OR MIXTURES THEREOF WITH A,B-MONOETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, SAID POLYESTER MOLECULE CHAINS BEING TERMINATED WITH A GROUPING SELECTED FROM THE GROUP CONSISTING OF HYDROXYL AND CARBOXYL, AT A TEMPERATURE OF FROM ABOUT 150* TO ABOUT 250*C.
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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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |