Bis- or poly-(bromo-4-methyl-phenoxy)-alkanes and -alkenes, process for preparing same and use thereof as uv-stable fireprotective agents for synthetic materials.

摘要

Disclosed are novel bis- or poly-(bromo-4-methylphenoxy)-alkanes and -alkenes having the formula (1) <CHEM> wherein n is an integer of from 1 to 6, m is 2 (n + z) - y, x is an integer of from 1 to 4, y is an integer of from 2 to 4 and z is 0 or 1, and a process for preparing said compounds by reacting alkali salts of nucleus-brominated p-cresols with bis- or poly-haloalkanes or -alkenes, preferably in a glycol monoalkylether as reaction medium. The materials are employed as UV-stable low-migrating fire-protective agents for thermoplastic synthetic materials, and more specifically for polybutylene terephthalate or acrylonitrile-butadiene-copolymer molding compositions, in combination with antimony trioxide.