Process for decreasing the flammability of textiles and product produced thereby
Abstract
Abstract A PROCESS FOR DECREASING THE FLAMMABILITY OF TEXTILES COMPRISING A CELLULOSIC FIBER COMPONENT AND A NITROGENFREE THERMOPLASTIC FIBER COMPONENT WHICH COMPRISES TREATING THE CELLULOSIC FIBER COMPONENT WITH AN UNSATURATED COMPOUND (VIS, N-METHYLOL PHOSPHONO PROPIONAMIDE, NMETHYLOL AMIDE, N-METHYLOL CARBAMATE, OR ALLYL HALIDE) SO AS TO INTRODUCE UNSATURATED GROUPS INTO SAID CELLULOSIC COMPONENT AND SUBSEQUENTLY HALOGENATING (PREFERABLY BROMINATING) THE UNSATURATED GROUPS THUS INTRODUCED INTO SAID CELLULOSIC COMPONENT. WHERE THE UNSATURATED COMPOUND USED DOES NOT CONTAIN PHOSPHORUS, ORGANOPHOSPHORUS REAGENTS CAN BE INTRODUCED IN A SEPARATE STEP (BEFORE OR AFTER HALOGENATION OF THE UNSATURATED GROUPS).
Inventors
- 👤 G Tesoro
Bibliographic Details
Claims Analysis
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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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |