Abstract:
A BINDER SHOWING THERMAL CHANGE AT A SUITABLE TEMPERATURE IS USED TO DISSOLVE OR DISPERSE AN AROMATIC SULFONAMIDE INTUMESCENT AGENT BEARING A NUCLEAR SUBSTITUENT WHICH IS LINKED TO THE AROMATIC RING THROUGH A NITROGEN ATOM. AMONG THE PREFERRED BINDERS ARE SUITABLE VINYL CHLORIDE/VINYLIDENE CHLORIDE AND VINYL CHLORIDE/VINYL ACETATE COPOLYMERS, CHLORINATED RUBBER, AND CHLORINATED OR CHLOROSULFONATED POLYETHYLENES. THE PREFERRED INTUMESCENT AGENTS ARE P-AMINOBENZENE SULFONAMIDE AND P-ACETAMIDOBENZENESULFONAMIDE.
Abstract:
DIPENTAERYTHRITOL IS USED TO IMPROVE THE HOMOGENEITY, AND THUS THE EFFECTIVENESS, OF THE FOAMED CHAR PRODUCED BY THE INTUMSCENCE OF P,P''-OXYBIS(BENZENESULFONAMIDE) IN A VINYL CHLORIDE/VINYLIDENE CHLORIDE COPOLYMER BINDER.
Abstract:
Melamine pyrophosphate is used to improve the homogeneity, and thus the effectiveness, of the foamed char produced by the intumescence of p,p''-oxybis(benzenesulfonamide) in a vinyl chloride/vinylidene chloride copolymer binder.