Patent US2736717A successfully refreshed from Google Patents.
US2736717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of vinyl aromatic compound, fatty acid ester of epoxy resin and a vegetable oil
Assignee: Wyeth Holdings LLC
•
Filing: 1952-03-29
•
Granted: 1956-02-28
•
Expires: 1972-03-29
Abstract
No abstract record available.
Inventors
- 👤 Frazier Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:35
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F2/00; C08F242/00; C08F299/00; C08F299/02; C08F299/026; C08L; C08L63/00; C08L63/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROCESS WHICH COMPRISES COREACTING AT A TEMPERATURE BETWEEN 130-215* C., A STYRENE SELECTED FROM THE GROUP CONSISTING OF STYRENE AND RING-SUBSTITUTED ALKYL AND HALO STYRENES AND AN ACID ESTER OF AN EPOXY RESINOUS MATERIAL IN A MUTUALLY INERT SOLVENT HAVING A BOILING POINT ABOVE 110* C. AND A KAURI-BUTANOL VALUE BETWEEN ABOUT 24 AND 100, IN THE PRESENCE OF (1) A CATALYST SELECTED FROM THE GROUP CONSISTING OF TERTIARY ALKYL SUBSTITUTED DIPEROXIDES AND DITERIARY ALKYL SUBSTITUTED PEROXIDES AND TERTIARY ALKYL SUBSTITUTED HYDROPEROXIDES AND (2) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF DRYING AND SEMI-DRYING OILS, WHEREIN SAID ESTER IS THE REACTION PRODUCT OF AN EPOXY COMPOUND WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE FATTY ACIDS OF NATURAL DRYING OILS, SEMI-DRYING OILS AND THE LOWER ALKYL ESTER OF SAID FATTY ACIDS AND WHEREIN SAID EPOXY COMPOUND IS THE RESINOUS REACTION PRODUCT OF A DIHYDRIC PHENOL AND A DIFUNCTIONAL HALOHYDRIN.
Claim 2
Dependent Claim
153 words
A PROCESS WHICH COMPRISES COREACTING AT A TEMPERATURE BETWEEN 130-215* C., A STYRENE SELECTED FROM THE GROUP CONSISTING OF STYRENE AND RING-SUBSTITUTED ALKYL AND HALO STYRENES AND AN ACID ESTER OF AN EPOXY RESINOUS MATERIAL IN A MUTUALLY INERT SOLVENT HAVING A BOILING POINT ABOVE 110* C. AND A KAURI-BUTANOL VALUE BETWEEN ABOUT 24 AND 100, IN THE PRESENCE OF (1) A CATALYST SELECTED FROM THE GROUP CONSISTING OF TERTIARY ALKYL SUBSTITUTED DIPEROXIDES AND DITERIARY ALKYL SUBSTITUTED PEROXIDES AND TERTIARY ALKYL SUBSTITUTED HYDROPEROXIDES AND (2) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF DRYING AND SEMI-DRYING OILS, WHEREIN SAID ESTER IS THE REACTION PRODUCT OF AN EPOXY COMPOUND WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE FATTY ACIDS OF NATURAL DRYING OILS, SEMI-DRYING OILS AND THE LOWER ALKYL ESTER OF SAID FATTY ACIDS AND WHEREIN SAID EPOXY COMPOUND IS THE RESINOUS REACTION PRODUCT OF A DIHYDRIC PHENOL AND A DIFUNCTIONAL HALOHYDRIN.
References Cited (Backward Citations)
US2596737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |