Flame retardant polyphenylene ether-styrene thermoplastic resin compositions.

摘要

A flame retardant polyphenylene ether-styrene resin composition having a UL-94 rating of V-1 or better, a heat distortion temperature greater than 92°C and a melt viscosity at 260°C of less than 200 pascal second is obtained by incorporating with said polyphenylene ether-styrene resin composition from about 4 to about 7 parts per hundred of a triaryl phosphate ester and from about 0.5 to about 3 parts per hundred of a 3-hydroxyalkyl phosphine oxide having the formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="15" wi="48" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R, may be the same or a different radical selected from the group consisting of hydrogen and the methyl radicals, R<Sub>2</Sub> is a radical of 4 to 8 carbon atoms and n is either zero or one.