Purification of anhydrides

Details Purification of anhydrides Purification of anhydrides

1988-08-04

1990-03-06

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549233, 549241, 549242, 549250, 549251, C07D30789

Patent

active

049067605

ABSTRACT:
Process for the purification of organic polyanhydrides to substantially-completely remove trace metals, such as for the production of metal-free electronic grade polymers. The process comprises decyclizing in an aqueous vehicle to form the polyacid, treating with an adsorption agent, crystallizing the polyacid, filtering and reconverting to the polyanhydride which is substantially free of trace metals. The purified polyanhydride can be reacted with other metal-free monomers to form metal-free polymers having excellent insulating properties for use in electrical components.

REFERENCES:
patent: 3965125 (1976-06-01), Meyers et al.

Affiliated with

Also associated with

Rating

Purification of anhydrides does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Purification of anhydrides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purification of anhydrides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-48406