Patent · US Expired

Dyestuffs of the phthalocyanine series, their preparation and their use on cellulose

US4461622A · kind A · utility

0Cited by

3References

8Claims

0Family size

Assignee

Cassella Aktiengesellschaft · DE

Inventors

Konrad Mix · Frankfurt, DE
Erich Feess · Hofheim, DE

Key dates

Filing date	Aug 30, 1982
Grant date	Jul 24, 1984
Priority date	—
Expiry date	Aug 30, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/918
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

New phthalocyanine dyestuffs of the formula ##STR1## wherein Phth is a copper phthalocyanine or cobalt phthalocyanine moiety; x is a number from 0 to 3; y is a number from 1 to 4 and the sum of x and y is 4 or less; the thiocyanate group is in the meta or para-position to the amino; and addition products thereof formed with water in the presence of acids; are prepared by converting a phthalocyaninecarboxylic acid into the corresponding acid halide and condensing the acid halide with m- or p-thiocyanoaniline in an inert organic diluent; and the new dyestuffs are for dyeing and printing a material of natural or regenerated cellulose.

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