Extraction of impurities from grafted polyolefins

Details Extraction of impurities from grafted polyolefins Extraction of impurities from grafted polyolefins

2006-06-13

2006-06-13

Boykin, Terressa (Department: 1711)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C203S092000, C203S093000, C203S094000, C203S095000, C508S221000, C508S231000, C524S502000, C524S505000

Reexamination Certificate

active

07060787

ABSTRACT:
A process for purifying grafted polyolefins by extraction is disclosed. The purified grafted polyolefins have improved color and adhesion properties. The extraction is performed with an azeotropic solvent that is strong enough to extract impurities but does not cause sticking of the grafted polyolefin. The azeotropic solvent can be easily recycled.

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