公开(公告)号：US20160201225A1

公开(公告)日：2016-07-14

申请号：US14994121

申请日：2016-01-12

Applicant: DSM IP ASSETS B.V.

Inventor： Roelof MARISSEN ,  Claudia Maria VAZ ,  Carina Sacha SNIJDER ,  Joseph Arnold Paul Maria SIMMELINK ,  Leonard Josef Arnold NIELABA

IPC: D01F6/04 ,  A61L17/14

CPC classification number: D01F6/04 ,  A61L17/14 ,  D01F13/04 ,  D10B2321/0211 ,  Y02P70/629 ,  Y10T428/298

Abstract: Processes for removing residual spin solvent from a gel spun, UHMwPE filament having an effective diameter of above 16 μm, comprise the steps of removing residual spin solvent from the filament to a level of below 100 ppm at elevated temperature, while keeping the filament taut. Gel spun UHMwPE filaments having an effective diameter of above 16 μm and a residual spin solvent residue of less than 100 ppm are also provided. Preferably the filament has a creep rate, measured at 50° C., under a load, so that the initial stress is 600 MPa, of less than 5·10−6 sec−1.

Abstract translation: 从有效直径大于16μm的凝胶纺丝UHMwPE细丝中除去残余旋转溶剂的方法包括以下步骤：在保持丝束拉伸的同时，将长丝上残留的旋转溶剂从升高的温度下除去至低于100ppm的水平。 也提供了有效直径高于16μm的凝胶纺丝UHMwPE细丝和小于100ppm的残留旋转溶剂残余物。 优选地，长丝在负荷下在50℃下测得蠕变速率，使得初始应力为600MPa，小于5×10 -6秒-1。

公开(公告)号：US20170319753A1

公开(公告)日：2017-11-09

申请号：US15610190

申请日：2017-05-31

Applicant: DSM IP ASSETS B.V.

Inventor： Claudia Maria VAZ ,  Leonardus Gerardus Bernardus BREMER ,  Joseph Arnold Paul Maria SIMMELINK ,  Marko DORSCHU ,  Jozef Maria Rudi Hendrik GOOSSENS ,  Harm van der WERFF

IPC: A61L31/04 ,  A61L27/16 ,  A61L29/04 ,  C08K3/22 ,  C08L23/06 ,  C08K3/08 ,  D06M11/83 ,  D01F11/12 ,  D06M11/47

Abstract: The invention concerns a high performance polyethylene (HPPE) member comprising at least 5 wt-% of a radiopaque component, the HPPE member is biocompatible and the radiopaque component is a particulate at least partially arranged inside a HPPE filament of the HPPE member. Furthermore, the radiopaque component has a particle size of at most 1 μm, preferably the radiopaque component has a particle size of at most 0.5 μm. The invention also concerns a method of making the HPPE member and various medical devices and repair products comprising the HPPE member.