Phosphites, process for producing them and their use
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United States of America Patent
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Feb 23, 1999
Grant Date -
N/A
app pub date -
Aug 26, 1997
filing date -
Aug 27, 1996
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Abstract
Phosphites which are useful as a deterioration inhibitor for organic material and are represented by the following formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.5 and R.sup.6 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; R.sup.3 represents hydrogen atom or an alkyl group; R.sup.4 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group, or the two R.sup.4 together form a direct bond, a group represented by --S-- or an optionally substituted methylene group; A represents an alkylene group; W represents a group represented by --O-- or a group represented by --NR.sup.7 wherein R.sup.7 represents a hydrogen atom, an alkyl group, etc.; B represents an alkylene group; and one of Y and Z represents a hydroxyl group, an alkoxy group or an aralkyloxy group, and the other one represents hydrogen atom or an alkyl group.
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