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PPE-grafted-EVA for Use in the Cable and Wire Industry

IP.com Disclosure Number: IPCOM000007658D
Publication Date: 2002-Apr-11
Document File: 1 page(s) / 24K

Publishing Venue

The IP.com Prior Art Database

Related People

Hua Guo: AUTHOR

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.

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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...