US3083070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the dyeability of polymeric material
Assignee: Gevaert Photo Producten NV
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Filing: 1958-05-09
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Granted: 1963-03-26
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Expires: 1978-05-09
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand L Schouteden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:42
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/388; G03C7/3882; B; B01; B01J; B01J45/00; C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38; D06; D06M; D06M11/00; D06M11/58; D06M11/63; D06M13/00; D06M13/322; D06M13/376; D06P; D06P1/00; D06P1/44; D06P1/673; D06P1/67308; D06P3/00; D06P3/70; D06P5/00; D06P5/22; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/44; D21H17/45; D21H17/455; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C1/76; G03C1/775; G03C1/795; G03C1/825; G03C1/835; G03C7/22; G03C7/25; Y; Y10; Y10S; Y10S8/00; Y10S8/06; Y10S8/93; Y10S8/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
PROCESS FOR IMPROVING THE DYEABILITY OF SHAPED ARTICLES FORMED FROM A POLYMERIC SUBSTANCE SELECTECD FROM THE GROUP CONSISTING OF CYANOETHYLTED CELLULOSE, POLYACRYLONITIRLE, POLYMERTHACRYLONITRILE, POLYVINYLIDENE CYANIDE, COPOLYMERS MAINLY CONSISTING ESSENACRYLONITRILE AND COPOLYMERS MAINLY CONSISTING ESSENTIALLY OF VINYLIDENE CYANIDE, WHICH COMPRISE THE STEPS OF (1) TREATING SAID ARTICLES FOR 1/2 TO 2 1/2 HOURS IN A SOLUTION CONTAINING FREE HYDROXYLAMINEE IN A CONCENTRATION BETWEEN 0.12 ANS 0.4% AND (2) AFTER THE HYDROXYLAMINE TREATMENT TO OBTAIN FROM ABOUT 0.5 TO 10% CONVERSION OF THE NITRILE GROUPS IN SAID ARTICLE, FURTHER TREATMENT OF SAID ARTICLE WITH A O.16 TO 3% AQUEOUS SOLUTION OF ETHYLENEDIAMINE AT 50-125*C. FOR FROM 1/2 TO 3 1/2 HOURS.
Claim 2
Dependent Claim
109 words
PROCESS FOR IMPROVING THE DYEABILITY OF SHAPED ARTICLES FORMED FROM A POLYMERIC SUBSTANCE SELECTECD FROM THE GROUP CONSISTING OF CYANOETHYLTED CELLULOSE, POLYACRYLONITIRLE, POLYMERTHACRYLONITRILE, POLYVINYLIDENE CYANIDE, COPOLYMERS MAINLY CONSISTING ESSENACRYLONITRILE AND COPOLYMERS MAINLY CONSISTING ESSENTIALLY OF VINYLIDENE CYANIDE, WHICH COMPRISE THE STEPS OF (1) TREATING SAID ARTICLES FOR 1/2 TO 2 1/2 HOURS IN A SOLUTION CONTAINING FREE HYDROXYLAMINEE IN A CONCENTRATION BETWEEN 0.12 ANS 0.4% AND (2) AFTER THE HYDROXYLAMINE TREATMENT TO OBTAIN FROM ABOUT 0.5 TO 10% CONVERSION OF THE NITRILE GROUPS IN SAID ARTICLE, FURTHER TREATMENT OF SAID ARTICLE WITH A O.16 TO 3% AQUEOUS SOLUTION OF ETHYLENEDIAMINE AT 50-125*C. FOR FROM 1/2 TO 3 1/2 HOURS.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |