发明名称 |
Process for improving dyeability |
摘要 |
Synthetic polycarbonamide filaments having more uniform acid dyeability are prepared in a melt-spinning and drawing process by applying a dye leveling agent to the filaments in a spin finish prior to drawing. Dye uniformity is improved with washfast, rate-sensitive acid dyes. The filaments may be processed conventionally prior to dyeing. Effective agents include sodium dodecyldiphenylether disulfonate and sulfated butyl oleate.
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申请公布号 |
US4030880(A) |
申请公布日期 |
1977.06.21 |
申请号 |
US19750621089 |
申请日期 |
1975.10.09 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HOLFELD, WINFRIED THOMAS;STROHMAIER, ALFRED JOHN |
分类号 |
D01F6/60;D06P3/24;(IPC1-7):D06P1/00 |
主分类号 |
D01F6/60 |
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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