US3151928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the tinctorial characteristics of polyolefin fibres
Assignee: Montedison SpA
•
Filing: 1961-04-28
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Granted: 1964-10-06
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Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 Cappuccio Vittorio
- 👤 Riboni Ubaldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:16
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/22; B; B05; B05B; B05B1/00; B05B1/26; C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; D01; D01F; D01F11/00; D01F11/04; D01F11/06; D01F6/00; D01F6/44; D01F6/46; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/673; D06P1/67316; D06P3/00; D06P3/79
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A PROCESS FOR IMPROVING THE TINCTORICAL CHARACTERISTICS OF FIBERS PREPARED BY (1) EXTRUDING A MIXTURE CONTAINING (A) A POLYPROPYLENE CONSISTING ESSENTIALLY OF ISOTACTIC MACROMOLECULES, (B) A BASIC NITROGEN CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYMERIC VINYL PYRIDINES AND CONDENSATION PRODUCTS OF DICHLOROETHANE WITH DIAMINES, (2) STRETCHING THE EXTRUDED FIBERS, (3) SUBJECTING THE STRETCHED FIBERS TO A TREATMENT WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONO-EPOXY COMPOUNDS AND DI-EPOXY COMPOUNDS, THE IMPROVEMENT WHICH COMPRISES CONTACTING THE RESULTING IMPROVEMENT WHICH COMPRISES CONTACTING THE RESULTING FIBERS WITH AN AQUEOUS SULFURIC ACID SOLUTION HAVING A CONCENTRATION OF FROM 0.01 TO 30% BY WEIGHT, AT A TEMPERATURE OF FROM 15* TO 100*C. AND REMOVING ACID PRIOR TO DYEING SAID FIBERS.
Claim 2
Dependent Claim
120 words
IN A PROCESS FOR IMPROVING THE TINCTORICAL CHARACTERISTICS OF FIBERS PREPARED BY (1) EXTRUDING A MIXTURE CONTAINING (A) A POLYPROPYLENE CONSISTING ESSENTIALLY OF ISOTACTIC MACROMOLECULES, (B) A BASIC NITROGEN CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYMERIC VINYL PYRIDINES AND CONDENSATION PRODUCTS OF DICHLOROETHANE WITH DIAMINES, (2) STRETCHING THE EXTRUDED FIBERS, (3) SUBJECTING THE STRETCHED FIBERS TO A TREATMENT WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONO-EPOXY COMPOUNDS AND DI-EPOXY COMPOUNDS, THE IMPROVEMENT WHICH COMPRISES CONTACTING THE RESULTING IMPROVEMENT WHICH COMPRISES CONTACTING THE RESULTING FIBERS WITH AN AQUEOUS SULFURIC ACID SOLUTION HAVING A CONCENTRATION OF FROM 0.01 TO 30% BY WEIGHT, AT A TEMPERATURE OF FROM 15* TO 100*C. AND REMOVING ACID PRIOR TO DYEING SAID FIBERS.
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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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |