Patent · US Expired

Process for the preparation of 2-aminobenzene-1,4-disulphonic acids and the new compound 6-chloro-2-aminobenzene-1,4-disulphonic acid

US5315036A · kind A · utility

0Cited by

2References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Rolf Schimpf · Leverkusen, DE
Walter Horstmann · Bensberg, DE

Key dates

Filing date	Feb 8, 1993
Grant date	May 24, 1994
Priority date	—
Expiry date	Feb 8, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C309/48
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to an improved preparation process for 2-aminobenzene-1,4-disulphonic acids and the new compound 6-chloro-2-aminobenzene-1,4-disulphonic acid.

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