Patent · US Expired

Production of 3-monochloro-2,4,5-trialkylbenzophenones and 3,6-dichloro-2,4,5-trialkylbenzophenones

US4001335A · kind A · utility

1Cited by

1References

8Claims

0Family size

Assignee

BASF SE

Inventors

Ernst Schaffner
Heinz Eilingsfeld · Bischofswerda, DE
Ernst Schefczik
Manfred Patsch · Monsheim, DE

Key dates

Filing date	Nov 15, 1973
Grant date	Jan 4, 1977
Priority date	—
Expiry date	Nov 15, 1993

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C45/63
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The production of 3-monochloro and 3,6-dichloro derivatives of 2,4,5-trialkylbenzophenones by reaction of 2,4,5-trialkylbenzophenones with chlorine, and the new 3-monochloro-2,4,5-trialkylbenzophenones and 3,6-dichloro-2,4,5-trialkylbenzophenones themselves. The products are starting materials for the production of dyes and pesticides.

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