Patent US6233585B1 successfully refreshed from Google Patents.
Patent US2842525A successfully refreshed from Google Patents.
US2842525A
Expired / Lapsed
US
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Modified vinylidene cyanide interpolymers and the dyeing of fibers thereof
Assignee: Goodrich Corp
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Filing: 1956-04-27
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Granted: 1958-07-08
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Expires: 1976-04-27
Abstract
No abstract record available.
Inventors
- 👤 Gateff George
- 👤 James A Klupar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:20
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/30; C08F22/34; C08F8/00; C08F8/30; C08F8/32; C08F2800/00; C08F2800/10; C08F2800/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE PROCESS OF PREPARING A VINYLIDENE CYANIDE INTERPOLYMER COMPRISING 45 TO 55 MOL PE RCENT VINYLIDENE CYANIDE RESPONSIVE TO DYEING WITH ACID, BASIC AND DIRECT DYES WHICH COMPRISES POLYMERIZING A MONOMER MIXTURE CONTAINING MONOMERIC VINYLIDENE CYANIDE AND BETA-METHYLENE-BETA-PROPIOLACTONE THEREBY TO FORM AN INTERPOLYMER CONTAINING BETA-PROPIOLACTONE RINGS ATTACHED TO THE POLYMER CHAIN AND THEN TREATING THE INTERPOLYMER WITH A COMPOUND CONTAINING ACTIVE HYDROGEN SELECTED FROM THE GROUP CONSISTING OF AMINES, IMINES, INORGANIC ACIDS AND ALCOHOLS TO OPEN THE BETA-PROPIOLACTONE RINGS AND PRODUCE DYE-RECEPTIVE GROUPS IN THE INTERPOLYMER STRUCTURE.
Claim 2
Dependent Claim
87 words
THE PROCESS OF PREPARING A VINYLIDENE CYANIDE INTERPOLYMER COMPRISING 45 TO 55 MOL PE RCENT VINYLIDENE CYANIDE RESPONSIVE TO DYEING WITH ACID, BASIC AND DIRECT DYES WHICH COMPRISES POLYMERIZING A MONOMER MIXTURE CONTAINING MONOMERIC VINYLIDENE CYANIDE AND BETA-METHYLENE-BETA-PROPIOLACTONE THEREBY TO FORM AN INTERPOLYMER CONTAINING BETA-PROPIOLACTONE RINGS ATTACHED TO THE POLYMER CHAIN AND THEN TREATING THE INTERPOLYMER WITH A COMPOUND CONTAINING ACTIVE HYDROGEN SELECTED FROM THE GROUP CONSISTING OF AMINES, IMINES, INORGANIC ACIDS AND ALCOHOLS TO OPEN THE BETA-PROPIOLACTONE RINGS AND PRODUCE DYE-RECEPTIVE GROUPS IN THE INTERPOLYMER STRUCTURE.
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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |