公开(公告)号：JPH10306068A

公开(公告)日：1998-11-17

申请号：JP7019498

申请日：1998-03-19

Applicant: BASF AG

Inventor： KRAUS RUPERT DR ,  REIF MARTIN DR ,  BRUCHMANN BERND DR ,  TESCH HELMUT DR

IPC: C07C263/10 ,  C07C265/14 ,  C08G18/76

Abstract: PROBLEM TO BE SOLVED: To obtain isocyanate showing light color that is useful for production of polyurethane by reaction of phosgene with a specifically treated amine. SOLUTION: An amine as a raw material is treated with an inorganic solid substance that has the Lewis acid and/or Broensted acid centers (points) and the treated amine is allowed to react with phosgene to produce an isocyanate showing light color. This inorganic solid substance is, for example, an artificially modified natural or synthetic oxide and/or silicate salt, particularly aluminum silicate is preferred. The amine is preferably diphenylmethyldiamine and its higher homologues. The amine is preferably treated at 10-50 deg.C under 0.1-10 bar.

公开(公告)号：DE19711447A1

公开(公告)日：1998-09-24

申请号：DE19711447

申请日：1997-03-19

Applicant: BASF AG

Inventor： KRAUS RUPERT DR ,  REIF MARTIN DR ,  BRUCHMANN BERND DR ,  TESCH HELMUT DR

IPC: C07C263/10 ,  C07C265/14 ,  C08G18/76 ,  C07C265/12 ,  C07C263/18

Abstract: Isocyanates (I) having a light colour are produced by reacting an amine with phosgene, the amine being pre-treated with solid inorganic substances (II) containing Lewis acid and/or Bronsted acid centres prior to mixing. Also claimed is a polyurethane prepared from (I).

公开(公告)号：DE19736975A1

公开(公告)日：1999-03-04

申请号：DE19736975

申请日：1997-08-25

Applicant: BASF AG

Inventor： REIF MARTIN DR ,  KRAUS RUPERT DR ,  FLICK KLEMENS DR ,  SCHWAB EKKEHARD DR ,  TESCH HELMUT DR ,  BRUCHMANN BERND DR ,  SEYFERT WILFRIED DR ,  NEVEJANS FILIP ,  ABEEL PETER VAN DEN

IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14 ,  C08G18/76 ,  C07C263/18 ,  C08G18/79

Abstract: Solutions containing at least an isocyanate (I) are prepared by treatment with hydrogen, without the formation of an over pressure after the phosgenation step and prior to separation of the solvent.

公开(公告)号：DE19633404A1

公开(公告)日：1998-02-26

申请号：DE19633404

申请日：1996-08-19

Applicant: BASF AG

Inventor： BRUCHMANN BERND DR ,  REIF MARTIN DR ,  HOFSCHEUER WERNER ,  JAEHME JOACHIM DR ,  LANGER WERNER DR ,  RENZ HANS DR ,  MOHRHARDT GUENTER ,  SCHIESL MICHAEL

IPC: C07C273/18 ,  C07C275/62 ,  C08G18/08 ,  C08G18/30 ,  C08G18/32 ,  C08G18/78 ,  C09D175/12 ,  C08J9/00

Abstract: A process is disclosed for producing a polyisocyanate containing biuret groups from at least one aliphatic, cycloaliphatic or araliphatic diisocyanate or a mixture of two or more such substances, and from at least one amine or water or a mixture of water and at least one amine as reactants. The reactants are mixed together and made to react in a mixing element with a high shearing effect.