Patent US2611753A successfully refreshed from Google Patents.
US2611753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing synthetic rubbers containing tackifiers and softeners and product thereof
Assignee: Heyden Chemical Corp
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Filing: 1950-07-21
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Granted: 1952-09-23
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Expires: 1970-07-21
Abstract
No abstract record available.
Inventors
- 👤 Burrell Harry
- 👤 Robert H Barth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A COMPOSITION COMPRISING INITIALLY A SYNTHETIC RUBBER PREPARED BY THE COPOLYMERIZATION OF A 1,3-BUTADIENE HYDROCARBON AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ACRYLONITRILE AND, AS A TACK-IMPARTING SOFTENER THEREFOR, AN ESTER-ACETAL OF A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, PENTAERYTHRITOL AND POLYPENTAERYTHRITOLS, IN WHICH AT LEAST ONE BUT NOT ALL OF THE HYDROXYL GROUPS OF THE ALCOHOL HAS BEEN ESTERIFIED BY A RESIN ACID SELECTED FROM TEH GROUP CONSISTING OF D-PIMARIC ACID, LEVOPIMARIC, ABIETIC ACIDS AND PALKIN ACIDS, AND THE REMAINING HYDROXYL GROUPS HAVE BEEN ACETALIZED IN PAIRS BY AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ALDEHYDES HAVING NOT MORE THAN 8 CARBON ATOMS IN THE MOLECULE AND BENZALDEHYDE.
Claim 2
Dependent Claim
118 words
A COMPOSITION COMPRISING INITIALLY A SYNTHETIC RUBBER PREPARED BY THE COPOLYMERIZATION OF A 1,3-BUTADIENE HYDROCARBON AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ACRYLONITRILE AND, AS A TACK-IMPARTING SOFTENER THEREFOR, AN ESTER-ACETAL OF A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, PENTAERYTHRITOL AND POLYPENTAERYTHRITOLS, IN WHICH AT LEAST ONE BUT NOT ALL OF THE HYDROXYL GROUPS OF THE ALCOHOL HAS BEEN ESTERIFIED BY A RESIN ACID SELECTED FROM TEH GROUP CONSISTING OF D-PIMARIC ACID, LEVOPIMARIC, ABIETIC ACIDS AND PALKIN ACIDS, AND THE REMAINING HYDROXYL GROUPS HAVE BEEN ACETALIZED IN PAIRS BY AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ALDEHYDES HAVING NOT MORE THAN 8 CARBON ATOMS IN THE MOLECULE AND BENZALDEHYDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |