Phosphonite compound and synthetic resin composition

Details Phosphonite compound and synthetic resin composition Phosphonite compound and synthetic resin composition

1989-02-06

1991-03-12

Dees, Jose G.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

558 83, 558 85, C08K 553, C07F 902

Patent

active

049993933

ABSTRACT:
A cyclic phosphonite compound having the following formula (I) is disclosed and useful as a stabilizer for a synthetic resin. ##STR1## in which R1 is an alkyl, phenyl or an alkylphenyl, R2 is hydrogen or an alkyl, R3 is an alkyl, R4 is hydrogen or methyl and R1 and R2 may form an alkylene by linking each other.

REFERENCES:
patent: 3297631 (1967-01-01), Bown et al.
patent: 4143028 (1979-03-01), Spivack
patent: 4481317 (1984-11-01), Nakahara et al.
In re Payne, 203 USPQ, 1979, pp. 245-258.

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