Process for generating a vacuum in production of polycarbonate

Details Process for generating a vacuum in production of polycarbonate Process for generating a vacuum in production of polycarbonate

1995-10-05

1996-11-19

Seidleck, James J.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

55468, 159 3, 159 401, 417118, 417151, 422138, C08G 6400

Patent

active

055764142

ABSTRACT:
Process for generating a vacuum and separating the condensable components of the vapors of melt-phase polycondensation in the production of polycarbonate, where at least one or two vapor jets with a downstream spray condenser are connected to the intake side of the polycondensation reactor to be evacuated, and the motive vapor is diphenyl carbonate vapor, and the spray liquid is liquid diphenyl carbonate.

REFERENCES:
patent: 3468849 (1969-09-01), Rothert et al.
patent: 3535280 (1970-10-01), Schnell et al.
patent: 3888826 (1975-06-01), Yamana et al.

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