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11.发明授权
公开(公告)号：EP2454193B1
公开(公告)日：2014-04-09
申请号：EP10732385.9
申请日：2010-07-15
Applicant: BASF SE
Inventor： SCHELLING, Heiner , PALLASCH, Hans-Jürgen , STRÖFER, Eckhard , SPEIER, Jon, S. , KIM, Byoung Yeon
IPC: C01B31/28 , C07C211/55 , C08G18/72 , C07C263/10
CPC classification number: C01B31/28 , C01B32/80 , C07C263/10 , C08G18/7664 , C07C265/14
Abstract: The present invention accordingly provides a process for preparing light-colored polyphenylene-polymethylene polyisocyanates comprising the steps (a) providing an amount of chlorine, (b) separating the chlorine provided in the step (a) to obtain a first chlorine fraction having a content of free and bound bromine and iodine of
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12.发明公开
公开(公告)号：EP2454193A1
公开(公告)日：2012-05-23
申请号：EP10732385.9
申请日：2010-07-15
Applicant: BASF SE
Inventor： SCHELLING, Heiner , PALLASCH, Hans-Jürgen , STRÖFER, Eckhard , SPEIER, Jon, S. , KIM, Byoung Yeon
IPC: C01B31/28 , C07C211/55 , C08G18/72 , C07C263/10
CPC classification number: C01B31/28 , C01B32/80 , C07C263/10 , C08G18/7664 , C07C265/14
Abstract: The present invention accordingly provides a process for preparing light-colored polyphenylene-polymethylene polyisocyanates comprising the steps (a) providing an amount of chlorine, (b) separating the chlorine provided in the step (a) to obtain a first chlorine fraction having a content of free and bound bromine and iodine of
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