公开(公告)号：US5004778A

公开(公告)日：1991-04-02

申请号：US197361

申请日：1988-05-23

申请人： Geert N. Waagen ,  Cornelis W. M. Bastiaansen ,  Robert Kirschbaum

发明人： Geert N. Waagen ,  Cornelis W. M. Bastiaansen ,  Robert Kirschbaum

IPC分类号： B29C55/00 ,  B29C67/24 ,  B29K23/00 ,  C08J5/00 ,  C08J5/18 ,  C08K5/01 ,  C08L23/00 ,  C08L23/02 ,  D01F6/04

CPC分类号： C08J5/18 ,  B29C55/005 ,  B29C67/24 ,  D01F6/04 ,  B29K2023/00 ,  B29K2023/0683 ,  B29K2105/251 ,  B29K2995/005 ,  B29K2995/0088 ,  C08J2323/06

摘要： An ultrastretchable polymer material is prepared starting from polyolefine particles with a low entanglement density and a weight average molecular weight (M.sub.w) higher than 400,000, the particles being densified to a coherent material together with a process auxiliary material at an elevated temperature, but below the melting point of the pure polyolefine.From this ultrastretchable material, objects with a high tensile strength and a high modulus can be produced by stretching it, for instance, at a temperature which is at most 70.degree. C. below the temperature at which the polyolefine melts under the prevailing conditions, if desired after removal of the process auxiliary agent present in it.