Patent · US Expired

Process for the dyeing or printing of polyester fibers

US4194882A · kind A · utility

0Cited by

3References

1Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Walter Birke · Frankfurt am Main, DE
Hans-Ulrich von der Eltz · Frankfurt am Main, DE
Franz Schon · Frankfurt am Main, DE

Key dates

Filing date	May 4, 1978
Grant date	Mar 25, 1980
Priority date	—
Expiry date	May 4, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B29/0823
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

In the process for the pad-dyeing or printing of materials consisting of, or containing, polyester or polyamide fibers or filaments, whereat in known manner the said materials are padded or printed with an aqueous liquor or printing paste of disperse dyestuffs, and subsequently the dyestuffs are fixed by means of liquid or gaseous methylene chloride or of both of the said phases of methylene chloride, the improvement that a dyestuff of the formula ##STR1## in which R.sub.1 represents hydrogen, chlorine, bromine or cyano, R.sub.2 represents hydrogen, chlorine or alkyl of 1 to 3 carbon atoms and R.sub.3 stands for alkyl of 1 to 5 carbon atoms, ##STR2## is applied.

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