Composite thermoplastic elastomer blend and process for...

Details Composite thermoplastic elastomer blend and process for... Composite thermoplastic elastomer blend and process for...

C - Chemistry, Metallurgy

08

L

400/1338, 400/64

C08L 1/08 (2006.01) C08L 23/02 (2006.01) C08L 67/00 (2006.01)

Patent

CA 2010103

ABSTRACT OF THE DISCLOSURE Thermoplastic elastomer blends comprising a thermoplastic elastomer and 1-20% by weight of a water insoluble alkyl cellulose exhibit improved mechanical properties compared to the unblended thermoplastic elastomer. The preferred elastomer is EPDM. The preferred alkyl cellulose is ethylcellulose, and preferred concentrations are 2.5-15%, most preferably 5-12%, all percentages being by weight based on total polymer content. The blends are formed by high shear mixing at a temperature at which both materials are melt processible. The alkyl cellulose in the product is present as domains which are essentially uniformly dispersed in a thermoplastic elastomer matrix.

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