发明名称 |
Fremgangsmaate for aa forbedre de mekaniske egenskapene av fibre av aromatiske kopolyamider i alkaliske medier og formlegemer inneholdende slike fibrer |
摘要 |
<p>The invention relates to a process for maintaining or increasing the tensile strength of fibres of aromatic copolyamides which are built up predominantly from para-monomers and are soluble in organic aprotic and polar solvents during storage in alkaline media. The process comprises the measures: a) production of fibres from said aromatic copolyamides by dry or wet spinning processes which are customary per se, b) aftertreatment of the resulting fibres in a manner which is known per se, and c) storage of the fibres in an aqueous environment which has a pH of at least 10 for at least a period of time and at a temperature such that the tensile strength of said fibres, based on the tensile strength of the fibres employed in step c), is at least retained or increased.</p> |
申请公布号 |
NO940114(D0) |
申请公布日期 |
1994.01.12 |
申请号 |
NO19940000114 |
申请日期 |
1994.01.12 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
NEUERT RICHARD;MIESS GEORG-EMERICH |
分类号 |
C04B16/06;D01F6/60;D01F6/80;D06M11/38;(IPC1-7):D01F |
主分类号 |
C04B16/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|