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Sen; Parmar, Journal of the Indian Chemical Society, 1953, vol. 30, p. 801
作者:Sen、Parmar
DOI:——
日期:——
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PROCESS FOR PREPARING 3,3',6,6'-TETRAALKYL-2,2'-BIPHENOLS AND 3,3',6,6'-TETRAALKYL-5,5'-DIHALO-2,2'-BIPHENOLS
申请人:Invista Technologies S.à.r.l.
公开号:EP1448503A1
公开(公告)日:2004-08-25
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PROCESS FOR PREPARING 3,3',5,5',6,6'-HEXAALKYL-2,2'-BIPHENOLS, 3,3',4,4',5,5'-HEXAALKYL-2,2'-BIPHENOLS AND 3,3',4,4',5,5',6,6'-OCTAALKYL-2,2'-BIPHENOLS
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP1467958A1
公开(公告)日:2004-10-20
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PROCESS AND APPARATUS FOR PRODUCING ALIPHATIC POLYESTER
申请人:Hayashi Naoki
公开号:US20120309929A1
公开(公告)日:2012-12-06
A process for producing an aliphatic polyester includes the steps of: heating a cyclic ester at a melting point or higher to transform the cyclic ester into molten state and convert a moisture contained in the cyclic ester into free carboxylic acid; measuring an amount of the free carboxylic acid in the molten cyclic ester; feeding a proton-source compound in an amount determined based on the measured amount of the free carboxylic acid into the molten cyclic ester; and subjecting the cyclic ester to ring-opening polymerization. The process provides an aliphatic polyester with a desired molecular weight which can be set easily and accurately. An apparatus for the process is also provided.
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[EN] PROCESS FOR PREPARING 3,3',6,6'-TETRAALKYL-2,2'-BIPHENOLS AND 3,3',6,6'-TETRAALKYL-5,5'-DIHALO-2,2'-BIPHENOLS<br/>[FR] PROCEDE DE PREPARATION DE 3,3',6,6'-TETRAALKYL-2,2'-BIPHENOLS ET DE 3,3',6,6'-TETRAALKYL-5,5'-DIHALO-2,2'-BIPHENOLS
申请人:DU PONT
公开号:WO2003045884A1
公开(公告)日:2003-06-05
A process for making a compound of the formula (I).