Graft copolymer based on an ultrahigh-molecular-weight polyethylene and an ethylene copolymer
AssigneeHoechst Aktiengesellschaft
InventorsJohn Hobes, Christiane Barth
Life of this patent
Estimating the term…
Abstract
A graft copolymer based on ultrahigh-molecular-weight polyethylene having a molecular weight .gtoreq. 1,000,000 g/mol, an ethylene copolymer and a graft monomer; and the preparation and use thereof. The ethylene copolymer contains ethylene and vinyl acetate or ethylene and an alkenecarboxylic acid ester. The graft monomer is an alkenecarboxylic acid or an alkenecarboxylic anhydride. The resultant graft polymers posses improved properties compared with the materials from which they are derived.
Claims21
A graft copolymer containing from 5 to 50 parts by weight of polyethylene having a molecular weight of at least 1,000,000 g/mol and constituting Base Polymer I;
- 95 to 50 parts by weight of a Base Polymer II comprising 10% to 50% by weight of vinyl acetate or alkenecarboxylic acid ester and 50% to 90% by weight of ethylene;
- and 0.5 to 3.0 parts by weight of alkenecarboxylic acid or alkenecarboxylic anhydride per 100 parts of Base Polymers I and II, as a graft monomer.
Dependencies are inferred from the claim text.