Homogeneous high modulus ultrahigh molecular weight...

Details Homogeneous high modulus ultrahigh molecular weight... Homogeneous high modulus ultrahigh molecular weight...

C - Chemistry, Metallurgy

08

L

C08L 23/04 (2006.01) A61L 27/00 (2006.01) B29C 43/14 (2006.01) C08F 2/44 (2006.01) C08F 10/02 (2006.01)

Patent

CA 2114101

2114101 9303072 PCTABS00019 A homogeneous composite is provided comprising (a) about 0.5 to 90 % by weight of an ultrahigh molecular weight linear polyethylene having a molecular weight of at least about 400,000, a crystalline melting point of greater than 143 ·C, the reduction of said melting point upon remelting being at least 3 ·C, and a crystal morphology comprising a bimodal distribution of molecular chain fold spacings reflecting significant populations of both folded and very highly extended molecular chains, and (b) about 0.5 to 90 % by weight of at least one filler compound having a neutral-to-acidic surface, said polyethylene being polymerized onto the surface of said filler, and said composite being substantially free of polymer-free filler and of filler-free polymer. Also provided are processes for the preparation of such composites.

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