Phenylethylidene-substituted phenyl polyphosphites

Details Phenylethylidene-substituted phenyl polyphosphites Phenylethylidene-substituted phenyl polyphosphites

1980-02-13

1984-07-31

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524118, 524120, 524128, 524305, 524350, 525150, 525437, 525538, C08K 552

Patent

active

044631120

ABSTRACT:
Organic polyphosphites are disclosed having in the molecule at least two phosphite ester groups, at least one of which is linked through oxygen to a phenylethylidene-substituted phenyl group and to a residue of a polyhydroxy compound which is a pentaerythritol residue or a residue of a phenol or alcohol having two to three hydroxyl groups separated from one another by at least three carbon atoms.
Polymer stabilizer compositions comprising an organic polyphosphite as disclosed and a known polymer stabilizer, as well as synthetic resin stabilized with such stabilizer compositions, are also disclosed.

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patent: 4233208 (1980-11-01), Spivack
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