Patent US4718419A successfully refreshed from Google Patents.
US2869974A
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Process for shrinking polyacrylonitrile textiles with specific chemical shrinking agents
Assignee: EIDP Inc
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Filing: 1955-03-02
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Granted: 1959-01-20
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Expires: 1975-03-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Benjamin Franklin Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:27
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/232; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR SHRINKING TEXTILE MATERIAL INHERENTLY CAPABLE THEREFORE MADE FROM A POLYMER OBTAINED BY POLYMERIZING MONOMERIC MATERIAL COMPRISING AT LEAST 80% ACRYLONITRILE AND UP TO 20% OF ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE WITH THE SAID ACRYLONITRILE WHICH COMPRISES CONTACTINT THE SAID MATERIAL WITHOUT DISSOLVING IT WITH A NON-AQUEOUS, NON-IONIC, NEUTRAL ORGANIC LIQUID AT A TEMPERATURE FROM ABOUT 60*C. TO ITS BOILING POINT UNTIL THE TEXTILE MATERIALS SHRINK, THE SAID NON-AQUEOUS LIQUID COMPRISING (1) A COMPOUND IN SHRINKING CONCENTRATION SELECTED FROM THE GROUP CONSISTING OF ETHYLENE CARBONATE, TRIMETHYLENE CARBONATE, AND PROPYLENE CARBONATE, AND (2) A GLYCOL SOLVENT FOR THE CARBONATE COMPOUNDS WHICH IS INERT TO THE ACRYLONITRILE POLYMER AND IN WHICH THE ACRYLONITRILE POLYMER IS INSOLUBLE.
Claim 2
Dependent Claim
115 words
A PROCESS FOR SHRINKING TEXTILE MATERIAL INHERENTLY CAPABLE THEREFORE MADE FROM A POLYMER OBTAINED BY POLYMERIZING MONOMERIC MATERIAL COMPRISING AT LEAST 80% ACRYLONITRILE AND UP TO 20% OF ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE WITH THE SAID ACRYLONITRILE WHICH COMPRISES CONTACTINT THE SAID MATERIAL WITHOUT DISSOLVING IT WITH A NON-AQUEOUS, NON-IONIC, NEUTRAL ORGANIC LIQUID AT A TEMPERATURE FROM ABOUT 60*C. TO ITS BOILING POINT UNTIL THE TEXTILE MATERIALS SHRINK, THE SAID NON-AQUEOUS LIQUID COMPRISING (1) A COMPOUND IN SHRINKING CONCENTRATION SELECTED FROM THE GROUP CONSISTING OF ETHYLENE CARBONATE, TRIMETHYLENE CARBONATE, AND PROPYLENE CARBONATE, AND (2) A GLYCOL SOLVENT FOR THE CARBONATE COMPOUNDS WHICH IS INERT TO THE ACRYLONITRILE POLYMER AND IN WHICH THE ACRYLONITRILE POLYMER IS INSOLUBLE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |