Organic sulfide antioxidants and polymers stabilized therewith
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United States of America Patent
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Jul 9, 1991
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N/A
app pub date -
Oct 31, 1989
filing date -
Oct 31, 1989
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Expired
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Abstract
Organic sulfide antioxidants useful for stabilizing polyolefins against oxidative and thermal degradation during processing and use represented by Formula I: ##STR1## wherein n is an integer of 2 to 15; R is a substituted or unsubstituted alkyl group of 2 to 30 carbons, a substituted or unsubstituted cycloalkyl group of 5 to 20 carbons a substituted or unsubstituted alkyl group of 2 to 30 carbons where any of up to 6 carbon atoms are replaced with an O or S heteroatom, a substituted or unsubstituted cycloalkyl group of 5 to 20 carbons where any of up to 6 carbon atoms are replaced with an O or S heteroatom, with the proviso that the heteroatoms must be separated from each other and from the portion of the compound to which the R group is bonded by at least one carbon atom, the substituents for R being --OH, --SR.sup.4 or -- OR.sup.4, wherein R.sup.4 is an alkyl group of 1 to 30 carbons or a cycloalkyl group of 5 to 20 carbons; R.sup.1 and R.sup.2 are independently H or an alkyl group of 1 to 4 carbons; and R.sup.3 is an alkyl group of 1 to 24 carbons or a cycloalkyl group of 5 to 20 carbons.
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