公开(公告)号：AT139994T

公开(公告)日：1996-07-15

申请号：AT93105635

申请日：1993-04-06

Applicant: BASF AG

Inventor： OTTERBACH ANDREAS DR ,  SCHWARZ HANS VOLKMAR DR ,  MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR ,  BRANDT ECKHARDT DR ,  MAGNUSSEN PETER DR ,  MATTNER OTTO

IPC: C08G18/72 ,  C07C263/00 ,  C07C263/04 ,  C07C263/20 ,  C07C265/00 ,  C07C265/04 ,  C07C265/10 ,  C07C265/14 ,  C08G71/00 ,  C08G71/04

Abstract: The invention relates to a multi-step method for the continuous preparation of organic polyisocyanates, preferably aliphatic or cycloaliphatic diisocyanates, by conversion of the corresponding organic polyamines with carbonic acid derivatives and alcohols into monomeric polyurethanes and thermal cleavage thereof, in which the prepared polyiisocyanates and unutilizable residues are separated off in specific reaction steps and the reutilizable by-products are fed back into preliminary steps.

公开(公告)号：DE3479117D1

公开(公告)日：1989-08-31

申请号：DE3479117

申请日：1984-11-26

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR

IPC: C07B61/00 ,  B01J31/00 ,  B01J31/04 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C231/10 ,  C07C231/22 ,  C07C233/00 ,  C07C233/09 ,  C07C253/00 ,  C07C253/30 ,  C07C255/07 ,  C07C255/08 ,  C07C255/11 ,  C07C255/15 ,  C07C255/34 ,  C07C255/49 ,  C07C255/50 ,  C07C255/58 ,  C07C120/00 ,  C07C103/133

Abstract: Nitriles of the general formula I R1-CN (I) where R1 is a saturated or unsaturated, straight-chain, branched or cyclic alkyl radical, an aralkyl radical or an aryl radical, each of which is of not more than 20 carbon atoms and can be unsubstituted or further substituted, and (meth)acrylamide are prepared simultaneously by a process in which an aldoxime of the general formula III R1-CH=NOH (III) where R1 has the above meanings, is heated at from 50 DEG to 180 DEG C. in the presence of a copper(II) carboxylate and of (meth)acrylonitrile.

公开(公告)号：DE3463762D1

公开(公告)日：1987-06-25

申请号：DE3463762

申请日：1984-11-26

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR

IPC: C07B61/00 ,  B01J31/00 ,  B01J31/04 ,  C07C67/00 ,  C07C231/00 ,  C07C231/10 ,  C07C233/09 ,  C11C3/00 ,  C07C102/00 ,  C07C103/133 ,  C07C131/00

公开(公告)号：DE3343673A1

公开(公告)日：1985-09-05

申请号：DE3343673

申请日：1983-12-02

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR

IPC: C07B61/00 ,  B01J31/00 ,  B01J31/04 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C231/10 ,  C07C231/22 ,  C07C233/00 ,  C07C233/09 ,  C07C253/00 ,  C07C253/30 ,  C07C255/07 ,  C07C255/08 ,  C07C255/11 ,  C07C255/15 ,  C07C255/34 ,  C07C255/49 ,  C07C255/50 ,  C07C255/58 ,  C07C120/00 ,  C07C121/30 ,  C07C121/32 ,  C07C121/34 ,  C07C121/52 ,  C07C121/78 ,  C07C121/70 ,  C07C103/133 ,  C07C102/10

Abstract: Nitriles of the general formula I R1-CN (I) where R1 is a saturated or unsaturated, straight-chain, branched or cyclic alkyl radical, an aralkyl radical or an aryl radical, each of which is of not more than 20 carbon atoms and can be unsubstituted or further substituted, and (meth)acrylamide are prepared simultaneously by a process in which an aldoxime of the general formula III R1-CH=NOH (III) where R1 has the above meanings, is heated at from 50 DEG to 180 DEG C. in the presence of a copper(II) carboxylate and of (meth)acrylonitrile.

公开(公告)号：DE3343675A1

公开(公告)日：1985-06-13

申请号：DE3343675

申请日：1983-12-02

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR

IPC: C07B61/00 ,  B01J31/00 ,  B01J31/04 ,  C07C67/00 ,  C07C231/00 ,  C07C231/10 ,  C07C233/09 ,  C11C3/00 ,  C07C102/10 ,  C07C103/133 ,  C07C103/153

公开(公告)号：DE2860710D1

公开(公告)日：1981-08-27

申请号：DE2860710

申请日：1978-06-16

Applicant: BASF AG

Inventor： STRAUB FERDINAND DR ,  SPOOR HERBERT DR ,  SCHENCK HANS-UWE DR ,  SCHWARZ WOLFGANG DR

IPC: C08F2/00 ,  C08F2/04 ,  C08F4/00 ,  C08F4/28 ,  C08F4/32 ,  C08F6/00 ,  C08F6/06 ,  C08F6/10 ,  C08F26/00 ,  C08F26/06 ,  C08F26/10 ,  C08F218/00 ,  C08F218/02 ,  C08F218/04 ,  C08F218/08 ,  C08F226/06 ,  C08F226/10 ,  C08F263/02 ,  C08F271/00

Abstract: A process for reducing the residual monomer content of a copolymer prepared by copolymerizing vinyl esters and N-vinyl-lactams in a solvent in the presence of a free radical polymerization initiator. Following the main polymerization, from 0.05 to 0.5% by weight, based on the monomers employed, of di-tert.-butyl peroxide, di-tert.-amyl peroxide, dicumyl peroxide, 2,5-dimethyl-2,5-bis-(tert.-butylperoxy)-hexane, 2,2-bis-(tert.-butylperoxy)-butane, 1,1-bis-(tert.-butylperoxy)-3,3,5-trimethylcyclohexane, 4,4-di-(tert.-butylperoxy)-butyl valerate, or a mixture of these, is added to the reaction mixture and the after-polymerization is carried out at a higher temperature than the main polymerization.

公开(公告)号：DE2621722A1

公开(公告)日：1977-12-08

申请号：DE2621722

申请日：1976-05-15

Applicant: BASF AG

Inventor： SEIB KARL DIPL CHEM DR ,  SCHWARZ WOLFGANG DR ,  GAUSEPOHL HERMANN DIPL CHEM DR

IPC: C08F220/00 ,  A61K8/00 ,  A61K8/36 ,  A61K8/37 ,  A61K8/81 ,  A61Q5/06 ,  C08F2/06 ,  C08F220/04 ,  C08F220/10 ,  C08F220/14 ,  C08F220/18

Abstract: A process for the manufacture of copolymers by copolymerizing acrylic acid or methacrylic acid with esters of acrylic acid and methacrylic acid in the presence of polymerization initiators, in which methyl methacrylate, acrylic acid and/or methacrylic acid and a higher alkyl acrylate are copolymerized.

公开(公告)号：ES2047964T3

公开(公告)日：1994-03-01

申请号：ES91105743

申请日：1991-04-11

Applicant: BASF AG

Inventor： KAHL THOMAS-MICHAEL DR ,  HENKELMANN JOCHEM DR ,  HUPFER LEOPOLD DR ,  FRANZISCHKA WOLFGANG DR ,  SCHWARZ WOLFGANG DR

IPC: B01J31/02 ,  C07B61/00 ,  C07C51/60 ,  C07C51/64 ,  C07C53/42

公开(公告)号：DE4124671A1

公开(公告)日：1993-01-28

申请号：DE4124671

申请日：1991-07-25

Applicant: BASF AG

Inventor： SCHWARZ HANS VOLKMAR DR ,  OTTERBACH ANDREAS DR ,  MATTNER OTTO ,  MERGER FRANZ DR ,  SCHWARZ WOLFGANG DR ,  BRANDT ECKHARDT DR ,  MAGNUSSEN PETER DR ,  MINGES ROLAND DR

IPC: B01J6/00 ,  C07C263/04 ,  C07C265/00 ,  C07C271/06

Abstract: A reactor for thermal cleavage of monofunctional and polyfunctional carbamic acid esters to the corresponding isocyanates and the hydroxyl components in the liquid phase, in which the geometry of the reactor, characterised by the degassing surface in proportion to the volume and the arrangement of the heating surfaces, makes possible the cleavage in a two-phase mixture which contains over 50% volumetric gas content.

公开(公告)号：DE4039750A1

公开(公告)日：1992-06-17

申请号：DE4039750

申请日：1990-12-13

Applicant: BASF AG

Inventor： HENKELMANN JOCHEM DR ,  KAHL THOMAS-MICHAEL DR ,  TROETSCH-SCHALLER IRENE DR ,  HUPFER LEOPOLD DR ,  FRANZISCHKA WOLFGANG DR ,  SCHWARZ WOLFGANG DR

IPC: B01D53/14 ,  B01D53/34 ,  B01D53/70

Abstract: To remove phosgene from off-gases, the former is reacted in a washing zone with a liquid which contains or is composed of compounds of the formula where R1 and R2 are identical or different and are each aliphatic or cycloaliphatic alkyl of 1 to 8 carbons, or R1 and R2 are -(CH2)n- where n is 4 or 5, R3 is hydrogen or aliphatic or cycloaliphatic alkyl of 1 to 6 carbon atoms, or R1 or R2 and R3 are -(CH2)m- where m is 3, 4 or 5. The liquid can be regenerated by the addition of water, and the regenerated liquid can be returned to the washing zone.