Resinous composition comprising a vinyl chloride polymer and a halogenated polyepoxide

Claim 1

A RIGID THERMOPLASTIC COMPOSITION AN INITIMATE MIXTURE OF: (1) BETWEEN ABOUT 70 AND 95 PARTS BY WEIGHT OF A VINYL CHLORIDE POLYMER CONTAINING AT LEAST ABOUT 80 WEIGHT PERCENT OF POLYMERIZED VINYL CHLORIDE IN THE POLYMER MOLECULE WITH THE REMAINDER BEING AT LEAST ONE MONOETHYLENICALLY UNSATURATED COMONOMER AND (2) BETWEEN ABOUT 5 AND 30 PARTS BY WEIGHT OF A THERMOPLASTIC POLYMERIC MODIFYING AGENT HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 30,000 AND A SOFTENING TEMPERATURES OF AT LEAST ABOUT 90*C., WHICH CONSISTS OF A HALOGENATED DERIVATIVE OF EPICHLOROHYDRIN AND 4,4''-ALKYLIDENE BISPHENOL WHEREIN SAID HALOGENATED DERIVATIVE IS PRODUCED BY THE REACTION OF ESSENTIALLY STOICHIOMETRIC AMOUNTS OF A 4,4''-ALKYLIDENE BISPHENOL WITH A DIGLYCICYL ETHER OF A 4,4''-ALKYLIDENE BISPHENOL IN THE PRESENCE OF A TERTIARY AMINE CATALYST IN AN AMOUNT SUFFICIENT TO PROVIDE AT LEAST 0.02 PERCENT NITROGEN BY WEIGHT OF SAID COMPOSITION ADDED AS NR3 WHERE EACH R IS AN ALKYL SUBSITUENT CONTAINING BETWEEN 2 AND 6 CARBON ATOMS AND WHEREIN ONE OF SAID 4,4''-ALYLIDENE BISPHENOL AND DIGLYCIDYL ETHER OF 4,4''-ALKYLIDENE BISPHENOL HAS FROM ABOUT 3 TO 4 HALOGEN ATOMS SELECTED FROM THE GROUP CONSISTING OF BROMINE AND CHLORINE ATTACHED TO THE NUCLEAR CARBONS ATOMS SAID HALOGEN BEING PRESENT IN AMOUNT SUFFICIENT TO PROVIDE AT LEAST 10.5 WEIGHT PERCENT BROMINE OR AT LEAST 19 WEIGHT PERCENT CHLORINE BASED ON THE WEIGHT OF SAID MIXTURE.