Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in tubular or loop reactor
Patent
1998-09-18
2000-12-19
Wu, David W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in tubular or loop reactor
526346, 526920, 422131, 422132, 422134, 422138, C08F 201
Patent
active
061628794
ABSTRACT:
The present invention relates to a continuous process for polymerizing a vinyl monomer wherein a liquid reaction mixture flows through a tubular reactor equipped with a primary heat exchanger connected to a primary cooling loop where a primary coolant liquid circulates, optionally cooled by contact with a secondary heat exchanger fitted in the said primary loop and placed in a heat exchange zone of a secondary cooling device containing a secondary coolant liquid. The primary coolant liquid employed in the absence of a secondary cooling device or the secondary coolant liquid consists essentially of superheated water under pressure which produces low-pressure steam which preferably is recovered at least partly thermally or energetically.
REFERENCES:
patent: 4275177 (1981-06-01), Walkenhorst et al.
patent: 4759313 (1988-07-01), Dye
patent: 5602216 (1997-02-01), Juvet
BP Chemicals Limited
Harlan R.
Wu David W.
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