Partially fluorinated tetracarboxylic acid and the dianhydride t

Details Partially fluorinated tetracarboxylic acid and the dianhydride t Partially fluorinated tetracarboxylic acid and the dianhydride t

1992-06-05

1993-12-28

Tsang, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

562412, 562415, 562416, 562417, C07D30777, C07C 5116

Patent

active

052741265

ABSTRACT:
A compound of the formula ##STR1## and the dianhydride thereof are prepared by air oxidation in the presence of a catalyst mixture composed of at least 2 heavy metal salts and also bromine in an acid organic medium. The compounds can be employed for the preparation of partially fluorinated polycondensates, such as polyimides, polycarboxamides, esters of polyamidecarboxylic acids, polyamides and imide-oligomers.

REFERENCES:
patent: 3355500 (1967-11-01), Farah et al.
patent: 4946935 (1990-08-01), Ohsaka et al.
patent: 5004797 (1991-04-01), Rohrscheid et al.
Farah, B. S. et al., J. Org. Chem. 30:998-1001 (1965).
Colon, I. et al., J. Org. Chem. 51:2627-2636 (1986).

Affiliated with

Also associated with

Rating

Partially fluorinated tetracarboxylic acid and the dianhydride t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Partially fluorinated tetracarboxylic acid and the dianhydride t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Partially fluorinated tetracarboxylic acid and the dianhydride t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1544158