BROMINATED ALPHA-METHYLSTYRENE TRIMER, ITS PRODUCTION, AND INCOMBUSTIBLE RESIN COMPOSITION COMPOUNDED WITH THE TRIMER

摘要

PROBLEM TO BE SOLVED: To obtain the subject trimer capable of being molten and dispersed in a general-purpose resin providing the resin with a high incombustibility and workability without reducing its mechanical properties, and useful as a frame retardant for e.g. a resin applicable to electrical appliances, by trimerizing a brominated α-methyl styrene. ;SOLUTION: This trimer is a compound (A₁) of formula I (X1 to X3 are each Br or Cl, noted that the whole of X1 to X3 are not Cl simultaneously; (a1) and (b1) are each 1 to 5; (c1) is 1 to 4), a compound (A₂) of formula II (X4 to X6 are each X1 to X3; (a2) and (b2) are each (a1); and (c2) is (c1)), or a compound (A₃) of formula III (X7 to X9 are X1 to X3; (a3) and (b3) are (a1); and (c3) is (c1)), wherein pref. A₁, A₂, and A₃ comprise each Br and Cl in the weight ratio Br/Cl of (80:20) to (100:0).;COPYRIGHT: (C)1999,JPO