Heavy metal deactivator/inhibitor for use in olefinic polymers

Details Heavy metal deactivator/inhibitor for use in olefinic polymers Heavy metal deactivator/inhibitor for use in olefinic polymers

2008-03-17

2011-11-22

Cano, Milton I (Department: 1763)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S189000

Reexamination Certificate

active

08063126

ABSTRACT:
An olefine polymer composition comprises a stabilizing amount of a metal deactivator comprising a polymeric hydrazine derivative. The deactivator is of formula (I), in which at least one of R1and R2comprise a polymeric radical that includes a substituted or unsubstituted aromatic radical, provided that R1and R2are not both of formula (II). The olefin polymers include polyethylene and polypropylene.

REFERENCES:
patent: 3798286 (1974-03-01), Reid
patent: 3931103 (1976-01-01), Hardy
patent: 4043976 (1977-08-01), Yoshikawa et al.
patent: 0 565 868 (1993-10-01), None

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