Ultrahigh-molecular-weight polyethylene composition

Details Ultrahigh-molecular-weight polyethylene composition Ultrahigh-molecular-weight polyethylene composition

C - Chemistry, Metallurgy

08

F

402/591, 402/624

C08F 10/02 (2006.01) C08L 23/06 (2006.01)

Patent

CA 1222598

Abstract of the Disclosure A ultrahigh-molecular-weight ethylene polymer or copolymer resin composition composed of (A) a ultrahigh- molecular-weight ethylene polymer or copolymer resin and (B) an organic solvent capable of dissolving the resin (A); characterized in that (1) the resin composition is in the homogeneous state, (2) the resin composition comprises (A) more than 10% by weight to 75% by weight, based on the total weight of (A) and (B), of said resin having an intrinsic viscosity [?] of at least 5 dl/g, and (B) less than 90% by weight to 25% by weight, based on the total weight of (A) and (B), of the solvent, and (3) the resin composition has a melt flow rate, MFR, of 1,000 to 0.001 g/10 min., a single DSC endothermic peak, and a DSC melting point, Tm (°C) within a range specified by the following formulae (1) and (2) Tm=Tmo - a(1 - x) ..... (1) 25?a?45 ..... (2) wherein Tmo is the DSC melting point (°C) of the resin (A), and x is the weight fraction of the resin (A) based on the total weight of (A) and (B), process for producing the composition and a crystalline solid therefrom.

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