SURFACE MODIFICATION OF ALUMINA HYDRATE WITH LIQUID FATTY ACIDS

摘要

A surface modified alumina hydrate composition compatible with thermoplastic resins when used as a flame retardant and smoke suppressing filler. Surface modification is accomplished by treating powdered alumina hydrate with about 0.2 to 5 percent by weight of a liguid mixture of C10-C20 carboxylic acids having a titer below about 30.degree.C a..d an iodine value of about 15 or less. In a preferred embodiment, the alumina hydrate has a particle size of less than about two microns, and the liquid mixture of acids comprises isostearic acid.