Polyesters containing structural units derived from phosphonic a

Details Polyesters containing structural units derived from phosphonic a Polyesters containing structural units derived from phosphonic a

1975-02-10

1976-06-08

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 47C, 260 49, 260DIG24, C08G 6316, C08G 6318, C08G 6366, C08G 6368

Patent

active

039621944

ABSTRACT:
Permanently flame resistant filaments and fibers are produced from synthetic linear polyesters in which about 5 to 15 mol% of the acid component of the polyester consist of phosphinic acid structural units of the formula ##EQU1## in which R, R.sub.1 and R.sub.2 stand for organic radicals which may contain hetero atoms, preferably halogen, oxygen or sulfur. The filaments and fibers can be well dyed deep shades and are suitable in all fields of application where textiles which are hard to inflame are desired.

REFERENCES:
patent: 3139450 (1964-06-01), Friedman
patent: 3255145 (1966-06-01), Graham
patent: 3434981 (1969-03-01), Baranauckas et al.
patent: 3450669 (1969-06-01), Nolen
patent: 3525711 (1970-08-01), Jenkner

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