Patent · US Expired

Process for the dyeing or printing of polyester fibers

US4194879A · kind A · utility

0Cited by

2References

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 primaryC09B1/547
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, in which process the materials are padded or printed in common manner with aqueous baths or printing pastes of disperse dyestuffs, and the dyestuffs are subsequently fixed by the action of liquid or gaseous methylene chloride or both of the said phases of methylene chloride, the improvement that dyestuffs of the general formula ##STR1## in which R is an alkoxy group of from 1 to 3 carbon atoms, the group ##STR2## in which n stands for an integer of from 2 to 6, are used.

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