US3267062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ester lactones as plasticizers in polyvinyl chloride compositions
Assignee: Monsanto Co
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Filing: 1963-10-22
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Granted: 1966-08-16
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Expires: 1983-10-22
Abstract
No abstract record available.
Inventors
- 👤 Erhard J Prill
- 👤 James C Wygant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A RESINOUS COMPOSITION COMPRISING A MAJOR PORTION OF A VINYL CHLORIDE POLYMER, SELECTED FROM THE GROUP CONSISTING OF A POLYVINYL CHLORIDE HOMOPOLYMER AND COPOLYMERS OF VINYL CHLORIDE WITH A MINOR PORTION OF AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, PLASTICIZED WITH AN ESTER-SUBSTITUTED LACTONE OF A 2-ALKENEYLSUCCINIC ANHYDRIDE AND A MONOHYDRIC ALCOHOL HAVING LESS THAN 18 CARBON ATOMS, WHEREIN SAID LACTONE INCLUDES ONLY GAMMA- AND DELTA-LACTONES DEFINED BY THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
70 words
A RESINOUS COMPOSITION COMPRISING A MAJOR PORTION OF A VINYL CHLORIDE POLYMER, SELECTED FROM THE GROUP CONSISTING OF A POLYVINYL CHLORIDE HOMOPOLYMER AND COPOLYMERS OF VINYL CHLORIDE WITH A MINOR PORTION OF AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, PLASTICIZED WITH AN ESTER-SUBSTITUTED LACTONE OF A 2-ALKENEYLSUCCINIC ANHYDRIDE AND A MONOHYDRIC ALCOHOL HAVING LESS THAN 18 CARBON ATOMS, WHEREIN SAID LACTONE INCLUDES ONLY GAMMA- AND DELTA-LACTONES DEFINED BY THE STRUCTURAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |