US2602075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of thermoplastic resins and the production from such resins of threads, fibres, filaments, and the like
Assignee: Akzo Nobel UK PLC
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Filing: 1949-11-01
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Granted: 1952-07-01
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Expires: 1969-11-01
Abstract
No abstract record available.
Inventors
- 👤 Carpenter Albert Stanley
- 👤 Reeder Frank
- 👤 Eric R Wallsgrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:22
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6407; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4028; C08G59/62; C08G59/621; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/11; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/12; C10M2215/122; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/04; C10M2219/044; C10M2227/00; C10M2227/06; C10N; C10N2040/00; C10N2040/08; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR THE PRDUCTION OF THERMOPLASTIC FIBER-FORMING RESINS WHICH COMPRISES CONDENSING EQUIMOLECULAR PROPORTIONS OF EPICHLORHYDRIN AND AT LEAST ONE AROMATIC DIHYDROXY COMPOUND IN WHICH THE HYDROXYL GROUPS ARE PHENOLIC AND THE CARBON ATOMS LINKED TO THE HYDROXYL GROUPS ARE SEPARATED BY AT LEAST ONE OTHER CARBON ATOM, THE SAID COMPOUND BEING OTHERWISE FREE FROM GROUPS WHICH ARE REACTIVE TOWARDS EPICHLORHYDRIN, TOGETHER WITH A QUANTITY OF AN ALKALI, SUCH THAT THE RATIO OF THE NUMBER OF MOLECULES OF THE ALKALI TO THE NUMBER OF MOLECULES OF THE DIHYDROXY COMPOUND IS WITHIN THE RANGE OF 1:0 TO 1:1, AND HEATING UNTIL A FIBER-FORMING RESINOUS CONDENSATION PRODUCT IS FORMED.
Claim 2
Dependent Claim
107 words
A PROCESS FOR THE PRDUCTION OF THERMOPLASTIC FIBER-FORMING RESINS WHICH COMPRISES CONDENSING EQUIMOLECULAR PROPORTIONS OF EPICHLORHYDRIN AND AT LEAST ONE AROMATIC DIHYDROXY COMPOUND IN WHICH THE HYDROXYL GROUPS ARE PHENOLIC AND THE CARBON ATOMS LINKED TO THE HYDROXYL GROUPS ARE SEPARATED BY AT LEAST ONE OTHER CARBON ATOM, THE SAID COMPOUND BEING OTHERWISE FREE FROM GROUPS WHICH ARE REACTIVE TOWARDS EPICHLORHYDRIN, TOGETHER WITH A QUANTITY OF AN ALKALI, SUCH THAT THE RATIO OF THE NUMBER OF MOLECULES OF THE ALKALI TO THE NUMBER OF MOLECULES OF THE DIHYDROXY COMPOUND IS WITHIN THE RANGE OF 1:0 TO 1:1, AND HEATING UNTIL A FIBER-FORMING RESINOUS CONDENSATION PRODUCT IS FORMED.
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) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |