Patent US2956040A successfully refreshed from Google Patents.
US2956040A
Expired / Lapsed
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Furfural-aldehyde polycondensation products with unsaturated hydrocarbons and process of making
Assignee: Hoechst AG
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Filing: 1957-08-16
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Granted: 1960-10-11
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Expires: 1977-08-16
Abstract
No abstract record available.
Inventors
- 👤 Dietz Karl
- 👤 Lorentz Guido Max Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:01
CPC Classifications
C; C08; C08G; C08G6/00; C08G10/00; C08G10/02; C08G2/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE PROCESS FOR THE PRODUCTION OF HARDENABLE SYNTHETIC RESINS WHICH COMPRISES REACTING CONDENSTION PRODUCT OBTAINED BY ALKALINE CONDENSATION OF FURFURAL WITH A SATURATED ALIPHATIC ALDEHYDE CONTAINING A -CH2GROUP IN ALPHA POSITION TO THE ALDEHYDE GROUP WITH 10 TO 90% BY WEIGHT, CLACULATED UPON THE WEIGHT OF SAID CONDENSATION PRODUCT, OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF CYCLOPENTADIENE, DICYCLOPENTADIENE, METHYLCYCLOPENTADIENE, DIVINYL BENZENE, SYTRENE, METHYL STYRENE, ACENAPHTHENE, 9,10-DUHYDROANTHRACENE, BETATERPINENE, GAMMA-TERPINENE, 3,8(9)-METHADIENE, ALPHAPHELLANDRENE, BETA-PHELLANDRENE AND LIMONENE, AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 110 TO 170*C.
Claim 2
Dependent Claim
86 words
THE PROCESS FOR THE PRODUCTION OF HARDENABLE SYNTHETIC RESINS WHICH COMPRISES REACTING CONDENSTION PRODUCT OBTAINED BY ALKALINE CONDENSATION OF FURFURAL WITH A SATURATED ALIPHATIC ALDEHYDE CONTAINING A -CH2GROUP IN ALPHA POSITION TO THE ALDEHYDE GROUP WITH 10 TO 90% BY WEIGHT, CLACULATED UPON THE WEIGHT OF SAID CONDENSATION PRODUCT, OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF CYCLOPENTADIENE, DICYCLOPENTADIENE, METHYLCYCLOPENTADIENE, DIVINYL BENZENE, SYTRENE, METHYL STYRENE, ACENAPHTHENE, 9,10-DUHYDROANTHRACENE, BETATERPINENE, GAMMA-TERPINENE, 3,8(9)-METHADIENE, ALPHAPHELLANDRENE, BETA-PHELLANDRENE AND LIMONENE, AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 110 TO 170*C.
References Cited (Backward Citations)
GB193524A
Cited
US1933715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |