发明名称 |
PROCESS FOR MAKING POLYAMIDE FIBER USEFUL AS STAPLE FOR PAPERMAKING MACHINE FELT |
摘要 |
<p>The invention provides a process for making polyamide fiber with high molecular weight and/or chemical and thermal resistance using conventional single or twin screw extruders. The process includes melt-blending polyamide polymer comprising at least about 75% by weight of poly(hexamethylene adipamide) or poly( epsilon -caproamide) and having a formic acid relative viscosity of about 20 to about 50 with a polyamide additive concentrate comprising polyamide polymer and an additive selected from the class consisting of stabilizers, catalysts and mixtures thereof to form a molten polymer which contains about 0.05 to about 2 weight % of the additive and extruding the molten polymer from a spinneret and forming a fiber having a denier per filament of 1 to 40. Fibers made by this process have great utility in the batt of papermaking machine felts where they provide improved resistance to wear and/or chemical attack.</p> |
申请公布号 |
EP0683828(B2) |
申请公布日期 |
2001.09.19 |
申请号 |
EP19930905910 |
申请日期 |
1993.02.12 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
KIDDER, DAVID, ROY |
分类号 |
D01F1/10;C08G12/10;D01F6/50;D01F6/60;D01F6/68;D01F6/80;D01F6/90;D21F7/08;(IPC1-7):D01F6/80 |
主分类号 |
D01F1/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|