Patent ID: 9624363
Date: 2017-04-18
CPC Classifications: C08L

Claim:
1. A method of preparing easily processable ultrahigh molecular weight polyethylene, said method comprising the step of adding to a first ultrahigh molecular weight polyethylene having an weight average molecular weight higher than 1×10 5 g/mol and a melt elastic modulus build-up >1.0 MPa, a second ultrahigh molecular polyethylene in an amount ranging between 20% to 60% having an weight average molecular weight of at least 2×10 6 g/mol and a melt elastic modulus build-up of below 1.0 MPa and a solvent in a weight proportion of less than 20% by weight of the total polymer to obtain a mixture; and stressing the mixture by melt mixing the same to obtain a resultant easily processable ultrahigh molecular weight polyethylene characterized by having a melt elastic modulus build-up <1.0 MPa, enhanced thermal properties as compared to the first ultrahigh molecular weight polyethylene and the melt processing temperature typically below its melting temperature.