公开(公告)号：EP1904671A1

公开(公告)日：2008-04-02

申请号：EP06762249.8

申请日：2006-06-28

申请人： DSM IP Assets B.V.

发明人： SIMMELINK, Joseph, Arnold, Paul, Maria ,  MARISSEN, Roelof ,  WERF VAN DER

IPC分类号： D01F6/04 ,  D01F1/10

CPC分类号： D01F6/04 ,  D01F1/10 ,  Y10T442/671

摘要： The invention relates to a process for making a polyethylene multifilament yarn comprising the steps of a) spinning multiple filaments from a solution comprising between 0.5 and 30 mass% of ultra high molecular weight polyethylene in a solvent; b) cooling the filament obtained to form gel filaments; c) removing at least partly the solvent from the gel filaments; d) drawing the filaments in at least one drawing step before, during or after removing the solvent, wherein the solution of step a) further comprises between 0.1 and 7 mass% of a sorbitol derivative and at step d) the filaments are drawn with a draw ratio of more than 15 to a strength of at least 1 GPa. The invention further relates to a high performance polyethylene multifilament yarn having a strength of at least 1 GPa, wherein the yarn comprises between 0.1 and 5 mass% of a sorbitol derivative.