Phosphonite or phosphonate compounds and use thereof

Details Phosphonite or phosphonate compounds and use thereof Phosphonite or phosphonate compounds and use thereof

1995-12-27

1997-12-30

Gibson, Sharon

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

Synthetic resins

Processes of preparing a desired or intentional composition...

25240023, 524125, 524126, 524128, 558156, 558162, C08J 300, C07F 902

Patent

active

057031509

ABSTRACT:
Phosphonite and phosphonate compounds ##STR1## wherein X.sup.1, X.sup.2, X.sup.3 and X.sup.4 are each independently a group of the formula ##STR2## wherein R is a hydrogen atom or a methyl group, p is 0 or 1, q is independently 0 or 1 with regard to each repeat unit, and m is an integer of 2 to 10, a stabilizer for organic materials comprising said compound and a stabilized organic material comprising said compound. The compound of the present invention is less volatile at high temperatures. The use of the compound of the present invention as a stabilizer for organic materials affords an extremely useful organic material which is superior in heat stability and free of degradation caused by oxidation. The compound of the present invention has excellent compatibility with the above-mentioned organic materials and hardly migrate from the organic materials. Thus, the compound of the present invention can reside in the organic material for a prolonged period of time, which in turn stabilizes the organic materials in a sustained manner.

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