| abstract |
NEW MATERIAL:A compound expressed by the formula (R 1 to R 3 are allyl, methallyl or 1-4C halogenated alkyl; X is halogen). n EXAMPLE: 1,1,1-Tris[4-allyloxy-3,5-dibromophenyl]ethane. n USE: An addition type flame retardant for thermoplastic resins, especially styrene- based or polyolefin resins, above all, polypropylene resin without impairing mechanical properties of resin products and causing blooming problems. n PREPARATION: The corresponding halogenated trisphenol type compound is reacted and etherified with allyl chloride or bromide or methallyl chloride, etc., by a conventional method and the resultant ether is then halogenated or the corresponding trishalogenated phenol type compound is reacted with a 1-4C halogenated hydrocarbon having ≥2 halogens according to a conventional method to afford the compound expressed by the formula. n COPYRIGHT: (C)1990,JPO&Japio |