发明名称 |
Processo para a obtenção ou para o aumento da resistência à ruptura por tração na estocagem de fibras de copoliamidas aromáticas, artigo moldado e aplicação |
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 |
BR9400083(A) |
申请公布日期 |
1994.08.02 |
申请号 |
BR19949400083 |
申请日期 |
1994.01.12 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
DR. RICHARD NEUERT;DR. GEORG-EMERICH MIESS |
分类号 |
C04B16/06;D01F6/60;D01F6/80;D06M11/38;(IPC1-7):D01F11/08;D06M23/00;D06M11/05;D06M11/36 |
主分类号 |
C04B16/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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