Patent · US Active

Pentarylene- and hexarylenetetracarboximides and preparation thereof

US8202994B2 · kind B2 · utility

1Cited by

3References

29Claims

0Family size

Assignee

BASF SE

Inventors

Jianqiang Qu · Shanghai, CN
Neil Gregory Pschirer · Mainz, DE
Ruediger Sens · Mannheim, DE

Key dates

Filing date	Oct 30, 2007
Grant date	Jun 19, 2012
Priority date	—
Expiry date	Oct 22, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to processes for preparing pentarylene- and hexarylenetetracarboximides of the general formula (I) or (Ia)or mixtures thereof, to pentarylene and hexarylenetetracarboximides having a high degree of substitution, and to their use.

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