The brominated p kumiruhuenoru derivative, blendinging the production manner and that, the fire-resistant resin constituent null

摘要

PROBLEM TO BE SOLVED: To obtain the subject new compound useful as a compounding type flame retardant for flame-retardant resins massively used in various kinds of electric equipments. ;SOLUTION: A compound of formula I (a1, a2, a3 are each 1-3; b1, b2 and b3 are each 1-3). The compound of formula I comprises 0-80 mol.% of the compound of formula I (a1+a2+a3+b1+b2+b3=6 to 8), 80-0 mol.% of the compound of formula I (a1+a2+a3+b1+b2+b3=9), and 0-20 mol.% of the compound of formula I (a1+a2+a3+b1+b2+b3=10 to 15) measured by a gel permeation chromatography analysis, and is a white heat-resistant crystal having a bromine content of 40-63%, a softening point of 200-280°C, and a 5% weight decrease temperature of ≥370°C measured with a thermobalance. The compound of formula I is obtained by reacting a brominated p-cumylphenol of formula II [(a) is 1-3; (b) is 1-2] with cyanuric chloride in the presence of a hydrogen chloride-removing reagent. Resin compositions containing the compound of formula I are excellent in flame-retardant performances and further in light resistance.;COPYRIGHT: (C)1998,JPO