Phosphites, process for producing the same and their use

Details Phosphites, process for producing the same and their use Phosphites, process for producing the same and their use

1997-08-04

1999-03-30

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

558 85, 558 95, C08K 549, C07C 6976

Patent

active

058890955

ABSTRACT:
A phosphite stabilizer for organic material is represented by the formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 is hydrogen, alkyl, cycloalkyl, alkyl, cycloalkyl, aralkyl or phenyl; R is hydrogen or alkyl; X is a direct bond, sulfur atom or a --CHR.sup.6 group in which R.sup.6 represents hydrogen, alkyl or cycloalkyl; A is an alkylene group having 2 to 8 carbon atoms or *--COR.sup.7 -- in which R.sup.7 is a direct bond or alkyl group, and * represents the bond to the oxygen atom of the phenoxy radical; and one of Y and Z represents a hydroxyl group, an alkoxy group or an aralkoxy group and the other one represents atom or an alkyl group.

REFERENCES:
patent: 4132702 (1979-01-01), Schmidt et al.
patent: 4182704 (1980-01-01), Spivack
patent: 4348495 (1982-09-01), Buysch et al.
patent: 5576365 (1996-11-01), Fukuda et al.

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