Catalyst removal process

Details Catalyst removal process Catalyst removal process

2005-02-15

2005-02-15

Boykin, Terressa (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C502S107000, C502S150000

Reexamination Certificate

active

06855795

ABSTRACT:
The present invention provides a process for producing polycarbonates in the presence of one or more alkali metal or alkaline-earth metal catalysts, and subsequently removing the catalyst residues by chelation, to yield a clear polycarbonate product that is free from catalyst residues, and is thus suitable for use as a binding material in the ceramics industry where residual amounts of catalysts in the binder are burdensome.

REFERENCES:
patent: 20020045534 (2002-04-01), Lee et al.
patent: 20030205516 (2003-11-01), Bohn et al.

Affiliated with

Also associated with

Rating

Catalyst removal process does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3481051