Process for flameproofing organic fibers with phosphorus-containing condensation products and the products produced
Abstract
Abstract The subject of the invention is a process for the manufacture of condensation products of hydroxymethylphosphonium compounds and guanidines, characterised in that (a) 1 mol of a tetrakis(hydroxymethyl)-phosphonium compound is condensed with (b) 0.02 to 0.5 mol, preferably 0.1 to 0.3 mol, of guanidine, guanidine salt, guanylurea, guanylurea salt or methylolated guanidine or guanylurea at 40* to 120*C, optionally in the presence of formaldehyde or a formaldehyde-donating agent and optionally in the presence of an inert organic solvent, optionally subsequently further condensed at temperatures of 100* to 150*C and, if appropriate, free hydroxyl groups are at least partially etherified with at least one alkanol with 1 to 4 carbon atoms and if appropriate the salts of the condensation products are converted into the corresponding hydroxides. The condensation products are used for flameproofing organic fibre material, especially textiles.
Inventors
- 👤 Hermann Nachbur
- 👤 Arthur Maeder
Bibliographic Details
Claims Analysis
Total Claims: 13References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |