Patent ID: 9534066
Date: 2017-01-03
CPC Classifications: C08F,D01F,D07B,F41H,Y10T

Claim:
1. A creep-optimized ultrahigh molecular weight polyethylene (UHMWPE) fiber obtained by spinning an UHMWPE having an intrinsic viscosity (IV) of at least 19 dl/g comprising ethyl branches or butyl branches and having an elongational stress (ES), wherein if the fiber is obtained by spinning an UHMWPE comprising ethyl branches, the ratio between the number of ethyl branches per thousand carbon atoms (C2H5/1000 C) and the elongational stress (ES) is between 1.0 and 3.00 mm the fiber is obtained by spinning an UHMWPE comprising butyl branches the ratio between the number of butyl branches per thousand carbon atoms (C4H9/1000 C) and the elongational stress (ES) is between 0.2 and 3.0 mm