Patent · US Expired

Process for dyeing wet-spun aromatic polyamides in gel form

US4059403A · kind A · utility

14Cited by
9References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 7, 1975
Grant dateNov 22, 1977
Priority date—
Expiry dateAug 7, 1995

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S8/932
  • WIPO fieldTextile and paper machines
  • WIPO sectorMechanical engineering

Abstract

The invention relates to a process for the production of dyed filaments from aromatic polyamides which contain acid groups.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.