US2913439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxy-containing copolymers and their preparation
Assignee: Shell Development Co
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Filing: 1955-12-01
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Granted: 1959-11-17
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Expires: 1975-12-01
Abstract
No abstract record available.
Inventors
- 👤 Arnold A Bondi
- 👤 Lawrence B Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:26
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08F; C08F8/00; C08F8/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN OIL SOLUBLE HYDROXY-CONTAINING POLYMERIC PRODUCT COMPRISING A HYDROLYZED COPOLYMER OF A VBINYL ESTER OF A LOWER FATTY ACID WHICH ACID CONTAINS UP TO SIX CARBON ATOMS, AND AN ETHYLENICALLY UNSATURATED HYDROCARBON HAVING A SINGLE ETHYLENIC GROUP WHICH IS IN A TERMINAL POSITION AND HAS AN UNITERRUPTED CHAIN OF FROM 16 TO 30 CARBON ATOMS, AND CONTAINING UNTIS OF THE VINYL ESTER, VINYL ALCOHOL AND THE MONOMER POSSESSING AT LEAST 1L CARBON ATOMS, AND COPOLYMER HAVING AN AVERAGE OF 1 TO 6 VINYL ALCOHOL AND VINYL ESTER UNITS PER UNIT OF THE MONOMER HAVING THE CHAIN OF AT LEAST 16 CARBON ATOMS AND 25% TO 99% OF THE VINYL ALCOHOL AND VINYL ESTER UNITS BEING VINYL ALCOHOL UNITS, AND THE SAID COPOLYMER HAVING A MOLECULAR WEIGHT BETWEEN 4.000 AND 50,000 AS DETERMINED BY THE LIGHT SCATTERING METHOD.
Claim 2
Dependent Claim
137 words
AN OIL SOLUBLE HYDROXY-CONTAINING POLYMERIC PRODUCT COMPRISING A HYDROLYZED COPOLYMER OF A VBINYL ESTER OF A LOWER FATTY ACID WHICH ACID CONTAINS UP TO SIX CARBON ATOMS, AND AN ETHYLENICALLY UNSATURATED HYDROCARBON HAVING A SINGLE ETHYLENIC GROUP WHICH IS IN A TERMINAL POSITION AND HAS AN UNITERRUPTED CHAIN OF FROM 16 TO 30 CARBON ATOMS, AND CONTAINING UNTIS OF THE VINYL ESTER, VINYL ALCOHOL AND THE MONOMER POSSESSING AT LEAST 1L CARBON ATOMS, AND COPOLYMER HAVING AN AVERAGE OF 1 TO 6 VINYL ALCOHOL AND VINYL ESTER UNITS PER UNIT OF THE MONOMER HAVING THE CHAIN OF AT LEAST 16 CARBON ATOMS AND 25% TO 99% OF THE VINYL ALCOHOL AND VINYL ESTER UNITS BEING VINYL ALCOHOL UNITS, AND THE SAID COPOLYMER HAVING A MOLECULAR WEIGHT BETWEEN 4.000 AND 50,000 AS DETERMINED BY THE LIGHT SCATTERING METHOD.
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |