Polyacetal resin compositions having improved resistance to deterioration when exposed to light and containing alkylidene bis(benzotriazolyl phenols).

摘要

Polyacetal resin compositions are provided having improved light stability and comprising an alkylidene bis(benzotriazolyl phenol) having the formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="27" wi="94" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein:
<UnorderedLists id="ula01" listStyle="none"><ListItem>R, is selected from the group consisting of hydrogen and alkyl having from one to about eleven carbon atoms;</ListItem><ListItem>R<Sub>2</Sub> is selected from the group consisting of alkyl having from one to about twelve carbon atoms; and arylalkyl having from seven to about eighteen carbon atoms; and</ListItem><ListItem>X is selected from the group consisting of hydrogen; halogen; alkyl having from one to about twelve carbon atoms; aryl alkyl having from seven to about eighteen carbon atoms; alkoxy having from one to about twelve carbon atoms; phenoxy; arylalkoxy having from seven to about eighteen carbon atoms; and phenyl.</ListItem></UnorderedLists>