US2982760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for spinning vinyl resin solution
Assignee: POLYMER SOC
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Filing: 1954-08-12
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Granted: 1961-05-02
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Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 Maragliano Domenico
- 👤 Cernia Enrico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:23
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/11; C08F; C08F8/00; D; D01; D01F; D01F6/00; D01F6/02; D01F6/08; D01F6/10; D01F6/18; D01F6/28; D01F6/38; C08F2800/00; C08F2800/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A PROCESS FOR OBTAINING A SYNTHETIC FIBER, COMPRISING SUBJECTING PARTICLES OF A POLYMER OF THE GROUP CONSISTING OF POLYVINYLCHLORIDE, POLYACRYLONITRILE, COPOLYMER OF ACRYLONITRILE AND VINYL PYRIDINE, AND COPOLYMER OF ACRYLONITRILE AND ETHYL ACRYLATE TO A HEAT TREATMENT AT A TEMPERATURE BETWEEN ABOUT 50 TO 200*C. FOR A PERIOD OF ABOUT TEN MINUTES TO TWO HOURS, IN A MEDIUM CONSISTING OF A MEMBER OF THE GROUP CONSISTING OF WATER, STEAM, INERT ORGANIC LIQUID DILUENTS AND INERT GAS, BUT PLASTICIZERS AND CHEMICALLY REACTIVE MATERIALS BEING ABSENT, DISPERSING THE SEPARATED POLYMER PRODUCT, AFTER DRYING WHERE WATER OR STEAM HAS BEEN USED IN THE HEAT TREATMENT, THE DISPERSING BEING IN THE COLD IN AN ORGANIC SOLVENT THEREOF, THEN HEATING THE DISPERSION AT 30 TO 150*C. TO DISSOLVE THE SURFACE LAYER OF DEGRADATION PROUCTS FORMED IN SAID HEAT TREATMENT AND THEN THE INNER LAYER, TO OBTAIN A HOMOGENEOUS SPINNING SOLUTION SUBSTANTIALLY FREE FROM GAS BUBBLES AND FROM GELS AND CRUMBS, AND SPINNING SAID SOLUTION.
Claim 2
Dependent Claim
159 words
A PROCESS FOR OBTAINING A SYNTHETIC FIBER, COMPRISING SUBJECTING PARTICLES OF A POLYMER OF THE GROUP CONSISTING OF POLYVINYLCHLORIDE, POLYACRYLONITRILE, COPOLYMER OF ACRYLONITRILE AND VINYL PYRIDINE, AND COPOLYMER OF ACRYLONITRILE AND ETHYL ACRYLATE TO A HEAT TREATMENT AT A TEMPERATURE BETWEEN ABOUT 50 TO 200*C. FOR A PERIOD OF ABOUT TEN MINUTES TO TWO HOURS, IN A MEDIUM CONSISTING OF A MEMBER OF THE GROUP CONSISTING OF WATER, STEAM, INERT ORGANIC LIQUID DILUENTS AND INERT GAS, BUT PLASTICIZERS AND CHEMICALLY REACTIVE MATERIALS BEING ABSENT, DISPERSING THE SEPARATED POLYMER PRODUCT, AFTER DRYING WHERE WATER OR STEAM HAS BEEN USED IN THE HEAT TREATMENT, THE DISPERSING BEING IN THE COLD IN AN ORGANIC SOLVENT THEREOF, THEN HEATING THE DISPERSION AT 30 TO 150*C. TO DISSOLVE THE SURFACE LAYER OF DEGRADATION PROUCTS FORMED IN SAID HEAT TREATMENT AND THEN THE INNER LAYER, TO OBTAIN A HOMOGENEOUS SPINNING SOLUTION SUBSTANTIALLY FREE FROM GAS BUBBLES AND FROM GELS AND CRUMBS, AND SPINNING SAID SOLUTION.
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) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |