Flame retardant compounds and thermoplastic composition containing the same.

摘要

Novel flame retardant agents comprise polyalkylene oxides or a derivative thereof end-capped with brominated phthalimide groups, and have the general formulae R-R<1> &lparstr& O-R<1> &rparstr& @R (I) (R-R<1> &lparstr& O-R<1> &rparstr& @ H &rparstr& @C = 0 (II) or R-R<1> &lparstr& OR<1> &rparstr& @CH2 &rparstr& @C-R<2> (III) wherein R is <CHEM> R<1> is alkylene of from about 2 to about 6 carbon atoms; R<1> is alkyl of from about 1 to about 6 carbon atoms; n is from about 4 to about 40; n min is from about 3 to about 15; and n sec is from about 1 to about 10. Thermoplastic compositions, for example, polyphenylene ether compositions, rendered flame retardant with the novel compounds having a high resistance to additive vaporization and surface liquid exudation as well as desirable high flow characteristics.