Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in tubular or loop reactor
Patent
1997-05-20
1998-05-26
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in tubular or loop reactor
528354, 528355, 528361, 526 64, 526 65, 526 67, 526 68, 526 71, C08F 200, C08G 8500
Patent
active
057566038
ABSTRACT:
The present invention provides a method capable of continuously efficiently producing a 2-hydroxycarboxylic acid oligomer while effectively removing the water contained in a raw material and the water produced by dehydration reaction. In production of a 2-hydroxycarboxylic acid oligomer by supplying a 2-hydroxycarboxylic acid to a reaction system, a dehydration system is provided between a raw material supply system and a polymerization reaction system so as to remove the water contained in the raw material and the water produced in the polymerization reaction system. As a result, the raw material in the dehydration system is concentrated and then supplied to the polymerization reaction system.
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Fujisawa Kazuhisa
Kawada Eiichi
Kurishiro Yuji
Maeda Hiroshi
Shimizu Kunihiko
Acquah Samuel A.
Kabushiki Kaisha Kobe Seiko Sho
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