Method of determining viscosity number during the oxidative coup

Details Method of determining viscosity number during the oxidative coup Method of determining viscosity number during the oxidative coup

1987-04-22

1988-10-18

Richman, Barry S.

Chemistry: analytical and immunological testing

Oxygen containing

Carbonyl, ether, aldehyde or ketone containing

528212, 436 52, G01N 3322, G01N 3508

Patent

active

047787651

ABSTRACT:
A method of continuous rapid determination of the J-value during the oxidative coupling reaction of phenols to form polyphenylene ethers. Solution of a defined temperature is withdrawn from the reaction mixture, the viscosity of the solution is measured in a Couette viscometer, and the J-value is determined using a calibration curve or mathematical means.

REFERENCES:
patent: 3478111 (1969-11-01), Bruce
patent: 4607085 (1986-08-01), Penczek et al.
Encyclopedia of Chemical Technology, pp. 290-299.

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