Stabilization of polymers after exposure to oxidation

Details Stabilization of polymers after exposure to oxidation Stabilization of polymers after exposure to oxidation

2006-03-28

2006-03-28

Egwim, Kelechi C. (Department: 1713)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S111000, C524S366000, C524S368000, C524S378000, C524S567000, C524S583000, C524S585000, C524S590000, C524S108000

Reexamination Certificate

active

07019055

ABSTRACT:
A polymer of polyvinyl chloride, polyvinylidene chloride, polycarbonate, polyethylene, polypropylene, polyimide, polyester, or polyvinyl acetate contains about 0.005 to about 10 phr of a stabilizer to prevent discoloration due to oxidation, particularly gamma radiation.

REFERENCES:
patent: 4686148 (1987-08-01), Havens
patent: 5352721 (1994-10-01), Takayanagi et al.
patent: 5760171 (1998-06-01), White et al.
patent: 1560765 (1980-02-01), None
“Condensed Chemical Dictionary 13th Ed., ” by Richard J. Lewis, p. 106 (1997).
“Organic Chemistry 5th Ed.”, by Morrison and Boyd., p. 415-418, 477, 478 and 488 (1987).
“Organic Chemistry 5th ed.”, by John McMurry, p. 580 (2000).

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