Patent · US Expired

Process for pad dyeing cellulosic textile materials

US4494956A · kind A · utility

20Cited by
2References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 7, 1983
Grant dateJan 22, 1985
Priority date—
Expiry dateDec 7, 2003

Classification

  • Technology area (CPC D)Textiles; Paper
  • CPC primaryD06P1/6133
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Cellulosic textile material is dyed with substantive dyes or preferably with reactive dyes. Dyeing is carried out by applying to the cellulosic material an aqueous dye liquor which contains, in addition to the dye, a graft polymer which is obtained from an adduct of an alkylene oxide, preferably propylene oxide, with an at least trihydric aliphatic alcohol, e.g. glycerol, and acrylamide or methacrylamide. The cellulosic material is then subjected to a heat treatment, e.g. by steaming or with microwaves, or is stored cold, to fix the dyes. This dye liquor increases the liquor pick-up and thus also increases the dye yield, while at the same time excellent levelness is achieved.

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