Bis(2,6-dis-tert-butyl-4-branched propyl or butyl phenyl)-pentaerythritol spiro phosphites and synthetic resin compositions containing such phosphites
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United States of America Patent
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Dec 19, 1989
Grant Date -
N/A
app pub date -
Nov 13, 1987
filing date -
May 14, 1986
priority date (Note) -
Expired
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Abstract
Bis(2,6-di tert butyl-4-branched propyl or butyl phenyl)-pentaerythritol spiro phosphites are provided having the formula: ##STR1## wherein R is a branched propyl or butyl group, such as isopropyl, iso-butyl, or sec-butyl, as well as synthetic resin compositions having enhanced resistance to deterioration upon exposure to the heat and light comprising such as bis(2,6-di-t-butyl-4-branched propyl or butyl phenyl)pentaerythritol spiro phosphites.
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