Process for the production of polyphenyleneoxide

Details Process for the production of polyphenyleneoxide Process for the production of polyphenyleneoxide

C - Chemistry, Metallurgy

08

G

402/359

C08G 65/44 (2006.01)

Patent

CA 1228197

ABSTRACT OF THE DISCLOSURE: A process for the production of polyphenylene- oxide, in which oxygen, or a gas containing molecular oxygen is fed into a liquid reaction medium which is a solvent of 2,6-xylenol and contains, as catalyst, a cupric salt complexed with an organic base, but which is not a solvent or substantially not a solvent of the polyphenyleneoxide. From time to time samples are collected of the reaction mixture. These samples are treated with a liquid solvent, capable of dissolving polyphenyleneoxide and of stopping the growth of the macromolecules, until a clear and homogeneous solution is obtained. The through time of the so obtained solution is measured in a capillary tube viscometer so that the value of the viscosity and/or the molecular weight of polyphenyleneoxide may be determined comparison with standard values. This determination of values is achieved more quickly than before so that on the basis of the so determined value of the viscosity and/or the polyphenylene- oxide molecular weight, effective interventions in the oxidative polymerizing reaction of 2,6-xylenol can be made.

469325

Affiliated with

Also associated with

Rating

Process for the production of polyphenyleneoxide does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1272351