Method of producing a polyphenylene ether protected against mole

Details Method of producing a polyphenylene ether protected against mole Method of producing a polyphenylene ether protected against mole

1985-05-10

1986-12-02

Phynes, Lucille M.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528214, 528215, 528217, 528492, C08G 6538

Patent

active

046265856

ABSTRACT:
The invention relates to a method for producing a polyphenylene ether, in which the oxidative coupling reaction of a di-ortho-substituted phenol is carried out in a solvent comprised of a chlorinated hydrocarbon, an aromatic solvent, or a mixture of one of these solvents with an alcohol or ketone. The reaction is terminated by removing or using up the oxygen-containing reaction gas, adding hydrazine to the reaction mixture, and filtering out the resulting precipitate. The precipitate may be reused along with a suitable amine, to comprise a catalyst for a subsequent oxidative coupling reaction.

REFERENCES:
patent: 4404359 (1983-09-01), Naarmann et al.
patent: 4463164 (1984-07-01), Dalton et al.
patent: 4482705 (1984-11-01), Hambrecht et al.
patent: 4537948 (1985-08-01), Bartmann et al.
patent: 4556699 (1985-12-01), Bialy et al.

Affiliated with

Also associated with

Rating

Method of producing a polyphenylene ether protected against mole does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing a polyphenylene ether protected against mole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing a polyphenylene ether protected against mole will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2293176