公开(公告)号：GR3021913T3

公开(公告)日：1997-03-31

申请号：GR960403137

申请日：1996-12-05

Applicant: BASF AG

Inventor： LAQUA GERHARD DR ,  BRUCHMANN BERND DR ,  WOLFF STEFAN DR

IPC: C07C263/04 ,  C07C263/18 ,  C07C265/10 ,  C07C265/14 ,  C08G18/70 ,  C08G18/72 ,  C08G18/73 ,  C08G18/75

Abstract: The invention relates to stable (cyclo)aliphatic polyisocyanate compositions which can be obtained by phosgene-free processes, preferably by thermal cleavage of (cyclo)aliphatic polycarbonates and which comprise carbon dioxide, expediently in an amount of up to 0.3% by weight, for stabilisation purposes, and to a process for their preparation.

公开(公告)号：AT140447T

公开(公告)日：1996-08-15

申请号：AT94113844

申请日：1994-09-03

Applicant: BASF AG

Inventor： LAQUA GERHARD DR ,  MERGER FRANZ DR ,  WITZEL TOM DR ,  SIEBENHAAR URSULA DR ,  AGAR DAVID DR

IPC: C07C263/18 ,  C07C265/14 ,  C08G18/73 ,  C08G18/75 ,  C08G18/79 ,  C08K5/00

公开(公告)号：DK0643042T3

公开(公告)日：1996-08-12

申请号：DK94113844

申请日：1994-09-03

Applicant: BASF AG

Inventor： WITZEL TOM DR ,  MERGER FRANZ DR ,  LAQUA GERHARD DR ,  SIEBENHAAR URSULA DR ,  AGAR DAVID DR

IPC: C07C263/18 ,  C07C265/14 ,  C08G18/73 ,  C08G18/75 ,  C08G18/79 ,  C08K5/00

公开(公告)号：DE4405054A1

公开(公告)日：1995-08-24

申请号：DE4405054

申请日：1994-02-17

Applicant: BASF AG

Inventor： WOLFF STEFAN DR ,  BRANDT PETER DR ,  BRUCHMANN BERND DR ,  LAQUA GERHARD DR ,  SIEBENHAAR URSULA DR ,  TESCH HELMUT DR ,  RENZ HANS DR ,  WITZEL TOM DR ,  MERGER FRANZ DR

IPC: C07C265/14 ,  C07C271/66 ,  C07C275/60 ,  C07C275/62 ,  C07D229/00 ,  C07D251/34 ,  C08G18/78 ,  C08G18/79 ,  C09K3/10 ,  C09D175/04 ,  C09J175/04

Abstract: Polyisocyanate mixts. (I) with an NCO content of 1-34 wt.%, contg. urethane, allophanate, urea, biuret, carbodi-imide, uretidine and/or isocyanurate gps., are obtd. by known methods from 2-butyl-2-ethyl-pentane- 1,5-di-isocyanate (II), 2-(3-isocyanatopropyl)- cyclohexyl-1-isocyanate (III) and/or 1-(isocyanatomethyl)-1- (3-isocyanatopropyl)- cyclohexane (IV). Also claimed is a process for the prodn. of isocyanurate gp.-contg. polyisocyanate mixts. (I) by trimerisation of the above di-isocyanates in the presence of bis-(trimethylsilyl)- amine (BTMSA), pref. at 30-140 degrees C.

公开(公告)号：DE4331084A1

公开(公告)日：1995-03-16

申请号：DE4331084

申请日：1993-09-13

Applicant: BASF AG

Inventor： BRUCHMANN BERND DR ,  WOLFF STEFAN DR ,  LAQUA GERHARD DR

IPC: C07D251/34 ,  C07D229/00 ,  C08G18/02 ,  C08G18/79 ,  C07C263/04 ,  C07C263/18 ,  C07C265/02 ,  C07C265/14

公开(公告)号：DE19749568A1

公开(公告)日：1998-05-28

申请号：DE19749568

申请日：1997-11-10

Applicant: BASF AG

Inventor： LAQUA GERHARD DR ,  DERNBACH MATTHIAS DR

IPC: C07C273/02 ,  C07C273/18 ,  C07C275/28 ,  C07C275/58 ,  C07C275/14 ,  C07C273/00

Abstract: Process for cleaning (poly)isocyanurates at 80-350 deg C and elevated pressure, optionally in the presence of a catalyst comprises reacting the isocyanurates with primary and/or secondary amines and/or NH3 and/or substances which split. The NH3 under reaction conditions, as NH functional substances with water has a content of

公开(公告)号：DE19627552A1

公开(公告)日：1998-01-15

申请号：DE19627552

申请日：1996-07-09

Applicant: BASF AG

Inventor： LAQUA GERHARD DR ,  SCHONER ULRICH ,  STROEFER ECKHARD DR ,  OTTERBACH ANDREAS DR ,  PFEFFINGER JOACHIM

IPC: C07C263/04 ,  C08G18/72 ,  C07C265/14 ,  C07C263/06 ,  C07C263/18

Abstract: The novel feature in the preparation of organic polyisocyanates by reaction of polyamines with carbamate esters and/or urea together with an alcohol to give urethane monomer which is then thermally dissociated to alcohol and polyisocyanate and distillatively separated is that the high-boiling sump fraction thus obtained is thermally dissociated with an alcohol to recover monomeric urethane which is then recycled to the dissociation stage.

公开(公告)号：ES2094606T3

公开(公告)日：1997-01-16

申请号：ES94113853

申请日：1994-09-03

Applicant: BASF AG

Inventor： LAQUA GERHARD DR ,  BRUCHMANN BERND DR ,  WOLFF STEFAN DR

IPC: C07C263/04 ,  C07C263/18 ,  C07C265/10 ,  C07C265/14 ,  C08G18/70 ,  C08G18/72 ,  C08G18/73 ,  C08G18/75

Abstract: The invention relates to stable (cyclo)aliphatic polyisocyanate compositions which can be obtained by phosgene-free processes, preferably by thermal cleavage of (cyclo)aliphatic polycarbonates and which comprise carbon dioxide, expediently in an amount of up to 0.3% by weight, for stabilisation purposes, and to a process for their preparation.

公开(公告)号：GR3020774T3

公开(公告)日：1996-11-30

申请号：GR960402143

申请日：1996-08-12

Applicant: BASF AG

Inventor： LAQUA GERHARD DR ,  MERGER FRANZ DR ,  WITZEL TOM DR ,  SIEBENHAAR URSULA DR ,  AGAR DAVID DR

IPC: C07C263/18 ,  C07C265/14 ,  C08G18/73 ,  C08G18/75 ,  C08G18/79 ,  C08K5/00

公开(公告)号：DE4331085A1

公开(公告)日：1995-03-16

申请号：DE4331085

申请日：1993-09-13

Applicant: BASF AG

Inventor： LAQUA GERHARD DR ,  BRUCHMANN BERND DR ,  WOLFF STEFAN DR

IPC: C07C263/04 ,  C07C263/18 ,  C07C265/10 ,  C07C265/14 ,  C08G18/70 ,  C08G18/72 ,  C08G18/73 ,  C08G18/75

Abstract: The invention relates to stable (cyclo)aliphatic polyisocyanate compositions which can be obtained by phosgene-free processes, preferably by thermal cleavage of (cyclo)aliphatic polycarbonates and which comprise carbon dioxide, expediently in an amount of up to 0.3% by weight, for stabilisation purposes, and to a process for their preparation.