Polyarylene sulfide production method and apparatus for continuous production of polyarylene sulfide
AssigneeKureha Corporation
InventorsMichihisa Miyahara, Kenji Suzuki, Hiroshi Sakabe
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Abstract
A method for producing polyarylene sulfide of the present invention includes the steps of: supplying reaction raw materials to at least one of a plurality of reaction vessels mutually communicated through a gas phase; carrying out a polymerization reaction; and removing at least some of the water present in the reaction vessels. Each of the steps is carried out in parallel, and a reaction mixture is transferred sequentially between the reaction vessels. At that time, the amount of heat that is removed in the polymerization reaction is less than the amount of reaction heat of the polymerization reaction.
Claims11
A method for producing polyarylene sulfide, the method comprising:
- a supplying step of supplying reaction raw materials to at least one of a plurality of reaction vessels mutually communicated through a gas phase;
- a polymerizing step of carrying out a polymerization reaction using the plurality of reaction vessels;
- and
- a dehydrating step of removing at least some of the water present in the plurality of reaction vessels;
- wherein each of the steps is carried out in parallel, and a reaction mixture is transferred sequentially between the reaction vessels;
- heat is removed from a reaction system in the polymerization reaction, and is used for dehydration and the amount of heat removed in the heat removal is less than an amount of reaction heat of the polymerization reaction.
Dependencies are inferred from the claim text.