公开(公告)号：DE19712249A1

公开(公告)日：1998-10-01

申请号：DE19712249

申请日：1997-03-24

Applicant: BASF AG

Inventor： LORENZ RUDOLF ERICH ,  HELFERT HERBERT DR ,  SCHMIDT-RADDE MARTIN DR ,  SCHILDBERG HANS-PETER DR ,  SALADIN GUENTER

IPC: C07B37/02 ,  C07C7/20 ,  C07C11/24 ,  C09K15/04

公开(公告)号：DE59301288D1

公开(公告)日：1996-02-15

申请号：DE59301288

申请日：1993-04-06

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHMIDT-RADDE MARTIN DR

IPC: C07B61/00 ,  C07C37/00 ,  C07C39/11 ,  C07C45/68 ,  C07C45/71 ,  C07C47/27

公开(公告)号：DE59300804D1

公开(公告)日：1995-11-30

申请号：DE59300804

申请日：1993-03-03

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHMIDT-RADDE MARTIN DR

IPC: B01J23/04 ,  C07B61/00 ,  C07C67/44 ,  C07C69/675

Abstract: Neopentyl glycol hydroxypivaloate is prepared by base-catalysed disproportionation of hydroxypivalaldehyde by carrying out the reaction in the presence of an alkaline earth metal salt which is readily soluble in water and of an alkali metal hydroxide.

公开(公告)号：DE4213750A1

公开(公告)日：1993-10-28

申请号：DE4213750

申请日：1992-04-25

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHMIDT-RADDE MARTIN DR

IPC: C07B61/00 ,  C07C37/00 ,  C07C39/11 ,  C07C45/68 ,  C07C45/71 ,  C07C47/27

公开(公告)号：DE4208571A1

公开(公告)日：1993-09-23

申请号：DE4208571

申请日：1992-03-18

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHMIDT-RADDE MARTIN DR

IPC: B01J23/04 ,  C07B61/00 ,  C07C67/44 ,  C07C69/675

Abstract: Neopentyl glycol hydroxypivaloate is prepared by base-catalysed disproportionation of hydroxypivalaldehyde by carrying out the reaction in the presence of an alkaline earth metal salt which is readily soluble in water and of an alkali metal hydroxide.

公开(公告)号：ES2127600T3

公开(公告)日：1999-04-16

申请号：ES96115818

申请日：1996-10-02

Applicant: BASF AG

Inventor： SCHMIDT-RADDE MARTIN DR ,  HELFERT HERBERT DR ,  ECK BERND ,  MALTRY BERNHARD

IPC: C07B63/00 ,  C07D207/26 ,  C07D207/267

Abstract: Purification of N-vinylpyrrolidone (I) comprises crystallisation in a crystalliser. The process includes pre-coating the surfaces of the crystalliser, on which crystals are to be grown during the crystallisation, with a seed layer of (I).

公开(公告)号：DE19536859A1

公开(公告)日：1997-04-03

申请号：DE19536859

申请日：1995-10-02

Applicant: BASF AG

Inventor： SCHMIDT-RADDE MARTIN DR ,  HELFERT HERBERT DR ,  ECK BERND ,  MALTRY BERNHARD

IPC: C07B63/00 ,  C07D207/26 ,  C07D207/267

Abstract: Purification of N-vinylpyrrolidone (I) comprises crystallisation in a crystalliser. The process includes pre-coating the surfaces of the crystalliser, on which crystals are to be grown during the crystallisation, with a seed layer of (I).

公开(公告)号：DE19510890A1

公开(公告)日：1996-09-26

申请号：DE19510890

申请日：1995-03-24

Applicant: BASF AG

Inventor： BITTINS KLAUS DR ,  HEIDER MARC DR ,  SCHMIDT-RADDE MARTIN DR ,  KELLENBENZ JOCHEN DR ,  WAGNER KURT JOSEF ,  ZEHNER PETER DR

IPC: B01J3/00 ,  B01J10/00 ,  C07C29/36 ,  C07C29/44 ,  C07C41/08 ,  C07C51/235 ,  C07D233/54 ,  C07D233/58 ,  C07C43/16 ,  C07B47/00 ,  C07C51/14 ,  C07C67/36

Abstract: Gas or liq. phase reactions carried out at -50 to 300 deg C and 0.1 - 100 bar, taking place in the presence of a second gas phase.

公开(公告)号：DE4215494A1

公开(公告)日：1993-11-25

申请号：DE4215494

申请日：1992-05-12

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHMIDT-RADDE MARTIN DR

IPC: C07C67/02 ,  C07C67/03 ,  C07C67/08 ,  C07C69/675

公开(公告)号：DE4134771A1

公开(公告)日：1993-04-29

申请号：DE4134771

申请日：1991-10-22

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  SCHMIDT-RADDE MARTIN DR

IPC: C07B61/00 ,  C07C29/141 ,  C07C31/24 ,  C07C45/59 ,  C07C45/68 ,  C07C45/75 ,  C07C47/19

Abstract: Process for the preparation of 2,2-bis(hydroxymethyl)-butane-1,4-diol, of the formula I, … … in which 4-hydroxybutyraldehyde, of the formula II, … … and/or 2-hydroxytetrahydrofuran, of the formula III, … … are condensed with formaldehyde in the presence of a basic catalyst, the resulting reaction mixture is subsequently subjected to catalytic hydrogenation, and the 2,2-bis(hydroxymethyl)-butane-1,4-diol is isolated from the hydrogenation product.