Bis-phenol phosphates as clarifiers for polyolefin resins.

摘要

Bis-phenol phosphates, phosphonates and phosphinates are provided, represented by the formula:<MathDetails id="matha01"><MathText><![CDATA[ <img id="ia01" file="imga0001.tif" wi="72" he="43" img-content="math" img-format="tif" inline="no" /> ]]></MathText></MathDetails>wherein:
<UnorderedLists id="ula01" listStyle="none"><ListItem>R is selected from the group consisting of a carbon-to-carbon bond; thio sulfur-S-; and alkylidene
<Chemistry id="chema01" num="0001"><Image id="ia02" he="15" wi="5" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>in which</ListItem><ListItem>R<Sub>3</Sub> and R. are selected from the group consisting of hydrogen, alkyl having from one to about eighteen carbon atoms, and cycloalkyl, including cycloalkylidene in which R<Sub>3</Sub> and R. are taken together as part of a cycloalkylene ring, having from three to about twelve carbon atoms;</ListItem><ListItem>R, and R<Sub>2</Sub> are each selected from the group consisting of hydrogen, alkyl having from one to about eighteen carbon atoms;</ListItem><ListItem>and cycloalkyl having from three to about twelve carbon atoms;<Image id="ia03" he="14" wi="89" file="IMGA0003.TIF" imgContent="table" imgFormat="TIFF" inline="no" /></ListItem></UnorderedLists>

M is a metal atom which can be monovalent or polyvalent; and n is the valence of the metal atom M, ranging from one to about four; useful to improve clarity of polyolefin resin compositions in an amount within the range from 0.005 to 5 parts by weight per 100 parts of resin.