Patent search ap:("BASF AG") AND inv:"DITTRICH CHRISTIAN" Page 1

1.

发明专利
Production of methylenedi(phenyl isocyanate), useful for polyurethane production, comprises phosgenating an aniline-formaldehyde reaction product without prior neutralization 未知

公开(公告)号：DE10145787A1

公开(公告)日：2003-04-10

申请号：DE10145787

申请日：2001-09-17

Applicant: BASF AG

Inventor： OCHSE MICHAEL , KRAUS RUPERT , DITTRICH CHRISTIAN , PLAUMANN HEINZ

IPC: C07C209/84 , C07C263/10 , C07C265/14

Abstract: Production of methylenedi(phenyl isocyanate) comprises reacting aniline with formaldehyde in the presence of an acid catalyst to form methylenedi(phenylamine), removing water and unreacted aniline without neutralizing the reaction mixture, and reacting the product with phosgene.

2.

发明专利
Stabilizing liquid diphenylmethane diisocyanate against precipitation of solid, for use in production of polyurethane, involves adding arylaliphatic or cycloaliphatic diisocyanate as stabilizer 未知

公开(公告)号：DE10064644A1

公开(公告)日：2002-06-27

申请号：DE10064644

申请日：2000-12-22

Applicant: BASF AG

Inventor： KRAUS RUPERT , LOOP CYNTHIA , DITTRICH CHRISTIAN , HENDREICH REGINA

IPC: C07C263/18 , C07C265/14 , C08G18/72 , C08G18/76

Abstract: A method for stabilizing diphenylmethane diisocyanate (MDI) against the precipitation of solid when stored in the liquid state involves the addition of up to 10 wt.% arylaliphatic and/or cycloaliphatic diisocyanate. An Independent claim is also included for stabilized liquid MDI obtained by this method.

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