Phosphorus and halogen containing polymers of bis-hydroxyethyl t

Details Phosphorus and halogen containing polymers of bis-hydroxyethyl t Phosphorus and halogen containing polymers of bis-hydroxyethyl t

1975-04-07

1977-06-21

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Contains fireproofing or biocidal agent

106177, 106190, 252 81, 260930, 260973, C09K 328

Patent

active

040309339

ABSTRACT:
The present invention provides a process for preparing phosphorus and halogen containing polymers useful as flame retardant additives in cellulose acetate or cellulose triacetate fibers or films. The phosphorus and halogen containing polymers may be prepared by reacting a halogenated derivative of bis-hydroxyethyl terephthalate with a halogen containing phosphorus monomer having the formula ##STR1## wherein R represents a radical selected from the group consisting of (a) alkyl, (b) bromoalkyl, (c) chloroalkyl, (d) alkylamido and (e) dialkylamido radicals, wherein the alkyl substituents of the foregoing may contain from 1 to 10 carbon atoms, (f) cyclohexyl, (g) phenyl, (h) benzyl, (i) tolyl, and (j) xylyl, and X represents a halogen atom (preferably chlorine or bromine). Cellulose acetate and cellulose triacetate fibers and films containing as little as two percent by weight of the polymeric flame retardant additives are rendered both non-burning and resistant to loss of the polymeric flame retardant additive during use.

REFERENCES:
patent: 3058935 (1962-10-01), Starck et al.
patent: 3652647 (1972-03-01), Zey
patent: 3706821 (1972-12-01), Anderson

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