公开(公告)号：CA2126285C

公开(公告)日：1998-12-22

申请号：CA2126285

申请日：1994-06-20

Applicant: BASF AG

Inventor： BRUCHMANN BERND ,  WOLFF STEFAN ,  STIEFENHOEFER KONRAD

IPC: C08G18/02 ,  C07D251/34 ,  C08G18/08 ,  C08G18/79 ,  C08G18/83 ,  C08G18/86 ,  C07D229/00 ,  C08G18/10

Abstract: of the Disclosure: Isocyanurate- and/or uretdione-containing polyisocyanates having a reduced color index and improved shelf life are prepared by conventional catalytic oligomerization of aliphatic and/or cycloaliphatic diisocyanates and treatment of the oligomerization products with peroxycarboxylic acids.

公开(公告)号：DE50107336D1

公开(公告)日：2005-10-13

申请号：DE50107336

申请日：2001-06-07

Applicant: BASF AG

Inventor： BRUCHMANN DR ,  STIEFENHOEFER KONRAD

IPC: C08G18/32 ,  C08G18/80 ,  C08G83/00

公开(公告)号：AT289325T

公开(公告)日：2005-03-15

申请号：AT00101039

申请日：2000-01-20

Applicant: BASF AG

Inventor： BRUCHMANN BERND DR ,  EHE ULRIKE ,  WINGERTER FRANK ,  STIEFENHOEFER KONRAD ,  TREULING ULRICH DR

IPC: C08G18/28 ,  C08G18/00 ,  C08G18/32 ,  C08G18/70 ,  C08G83/00

Abstract: In a process for the production of dendrimeric or highly-branched polyurethanes (PU) by reacting di- and/or poly-isocyanates with NCO-reactive compounds, at least one of the reactants has functional groups with different reactivity towards the other reactant and the reaction conditions are chosen so that only certain groups react together at each stage. Independent claims are also included for dendrimeric PU and highly-branched PU obtained by this process.

公开(公告)号：DE59404388D1

公开(公告)日：1997-11-27

申请号：DE59404388

申请日：1994-06-13

Applicant: BASF AG

Inventor： BRUCHMANN BERND DR ,  WOLFF STEFAN DR ,  STIEFENHOEFER KONRAD

IPC: C08G18/02 ,  C07D251/34 ,  C08G18/08 ,  C08G18/79 ,  C08G18/83 ,  C08G18/86

Abstract: The invention relates to a process for the preparation of polyisocyanates containing isocyanurate and/or uretdione groups and having a reduced colour index and improved shelf life (storage stability) by catalytic oligomerisation, known per se, of aliphatic and/or cycloaliphatic diisocyanates and treatment of the oligermerisation products with peroxycarboxylic acids.

公开(公告)号：DE4218539A1

公开(公告)日：1993-12-09

申请号：DE4218539

申请日：1992-06-05

Applicant: BASF AG

Inventor： BRUCHMANN BERND DR ,  MINGES ROLAND DR ,  SCHADE CHRISTIAN DR ,  STIEFENHOEFER KONRAD

IPC: C07B61/00 ,  C07D229/00 ,  C08F8/30 ,  C08F8/32 ,  C08G18/20 ,  C08G18/79 ,  C08G85/00

Abstract: The invention relates to polymeric, catalytically active compounds comprising polymer chains to which imidazole groups have been adducted at the ends or in the middle, to their preparation, and to their use as catalysts for the dimerization of isocyanates.