Detecting the stoichiometric end point of phosgenation reactions

Details Detecting the stoichiometric end point of phosgenation reactions Detecting the stoichiometric end point of phosgenation reactions

1987-11-25

1989-03-21

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

526 59, 526 61, 528196, 558280, 558281, 558282, 558283, C08G 6362

Patent

active

048144207

ABSTRACT:
A method is provided for determining the stoichiometric end point of phosgenation reactions which produce polycarbonates and chloroformates, respectively, by monitoring the rate of heat generated by the reaction mixture per unit of phosgene utilized.

REFERENCES:
patent: 4378454 (1983-03-01), Dick et al.
patent: 4506067 (1985-03-01), Burzminski
patent: 4722995 (1988-02-01), Brunelle et al.

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