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Abstract
Poly(phenylene ether) resins, PPE, notably poly(2,6-dimethylphenylene ether) and poly(2,6-dimethylphenylene ether-co-2,3,6-trimethylpheylene ether) resins, with different degrees of vinyl functional end groups can be used with polyolefins such as Ethylene-Propylene Copolymer (EPM), Ethylene-Propylene terpolymer (EPDM), Polyethylene (PE), PVC, and chlorinated polyethylene (CPE). In order to increase the miscibility of PPE with these polymers, PPE can be grafted to a non-aromatic polymer such as Ethylene-Vinyl-acetate copolymer (EVA). The EVA copolymer may, preferably, include about 1 to about 30 weight percent of units derived from vinyl acetate. This PPE grafted non-aromatic polymer will function as the compatibilizer for PPE and polyolefin. The PPE may have a range of intrinsic viscosity (IV) with different degrees of vinyl functional groups on one and/or both chain ends. Addition of PPE to polymers such as EPM and EPDM would potentially offer property advantages such as heat resistance and fire resistance in the cable and wire industry.
PPE-grafted-EVA
for Use in the Cable and Wire Industry
Narsi Devanathan, Amy Freshour and Hua Guo
GE Plastics
One Noryl Ave, Selkirk, NY 12158
Poly(phenylene ether)
resins, “PPE”, notably poly(2,6-dimethylphenylene ether) and
poly(2,6-dimethylphenylene ether-co-2,3,6-trimethylpheylene ether) resins, with
different degrees of vinyl functional end groups can be used with polyolefins
such as Ethylene-Propylene Copolymer (EPM), Ethylene-Propylene terpolymer
(EPDM), Polyethylene (PE), PVC, and chlorinated polyethylene (CPE). In order to increase the miscibility of
PPE with these polymers, PPE can be grafted to a non-aromatic polymer such as
Ethylene-Vinyl-acetate copolymer (“EVA”).
The EVA copolymer may, preferably, include about 1 to about 30 weight
percent of units derived from vinyl acetate. This PPE grafted non-aromatic polymer will function as the
“compatibilizer” for PPE and polyolefin.
The PPE may have a range of intrinsic viscosity (IV) with different
degrees of vinyl functional groups on one and/or both chain ends. Addition of
PPE to polymers such as EPM and EPDM would potentially offer property
advantages such as heat resistance and fire resistance in the cable and wire
industry.
In
some applications, the PPE branches should preferably have uniform, adjustable
and controllable length to match different final material applications that
require adding PPE with different molecular weight. Grafting points may only be
generated in vinyl-acetate sections in EVA polymer that w...