PROCESS FOR PRODUCING POLYARYLENE SULFIDE

专利名称：PROCESS FOR PRODUCING POLYARYLENE

SULFIDE

发明人：SATO, Hiroyuki, Kureha Chemical Ind. Co.

Ltd.,KAWASAKI, Tatsuya, Kureha ChemicalInd. Co. Ltd.,NAKAZAWA, Yasushi, KurehaChemical Ind. Co. Ltd.

申请号：EP03782838.1申请日：20031219公开号：EP1580212A1公开日：20050928

专利附图：

摘要：In the dehydration step, a mixture comprising an organic amide solvent and asulfur source is heated, vapor volatilized is guided to a distillation column, a fractioncomprising the organic amide solvent as a principal component is refluxed into a reactionvessel, a fraction comprising water and hydrogen sulfide is cooled to discharge hydrogensulfide that is not condensed by the cooling and reflux a part of water condensed intothe distillation column, the remaining water is discharged, a relational expressionbetween the total amount of water of an amount of water refluxed and an amount ofwater discharged without being refluxed, and an amount of hydrogen sulfide dischargedfrom the reaction vessel is determined in advance, and an amount of hydrogen sulfidedischarged from the reaction vessel is calculated out from a measured value of the totalamount of water on the basis of the relational expression to control a charged molarratio of the sulfur source to a dihalo-aromatic compound.

申请人：Kureha Chemical Industry Company, Limited

地址：1-9-11, Nihonbashi Horidome-cho, Chuo-ku Tokyo 103-8552 JP

国籍：JP

代理机构：Jones, Helen M.M.

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