公开(公告)号：DE59601070D1

公开(公告)日：1999-02-11

申请号：DE59601070

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：DE19509352A1

公开(公告)日：1996-09-19

申请号：DE19509352

申请日：1995-03-15

Applicant: BASF AG

Inventor： HEIDER MARC DR ,  KARCHER MICHAEL DR ,  SCHMIDT-RADDE MARTIN DR ,  DAMS ALBRECHT DR

IPC: C07D233/58 ,  B01D61/36 ,  C07B61/00 ,  C07B63/00 ,  C07C41/08 ,  C07C41/42 ,  C07C43/16 ,  C07C43/162 ,  C07D207/26 ,  C07D223/10 ,  C07D233/54 ,  C07C43/178 ,  C07C43/188 ,  C07C209/60 ,  C07C209/86 ,  C07C211/20

公开(公告)号：ES2081651T3

公开(公告)日：1996-03-16

申请号：ES93105656

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：ES2088609T3

公开(公告)日：1996-08-16

申请号：ES93106680

申请日：1993-04-24

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：ES2077321T3

公开(公告)日：1995-11-16

申请号：ES92117239

申请日：1992-10-09

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.

公开(公告)号：DE59203827D1

公开(公告)日：1995-11-02

申请号：DE59203827

申请日：1992-10-09

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.

公开(公告)号：DE19509362A1

公开(公告)日：1996-09-19

申请号：DE19509362

申请日：1995-03-15

Applicant: BASF AG

Inventor： SCHMIDT-RADDE MARTIN DR ,  HEIDER MARC DR ,  DAMS ALBRECHT DR ,  RUST HARALD

IPC: C07D207/26 ,  C07D207/267 ,  C07D211/76 ,  C07D223/10 ,  C07B43/06

Abstract: Prepn. of N-vinyl-lactams (I) of formula (A) (where R = CH=CH2; n=1-3) comprises reacting lactams (II) of formula (A) (where R = H; n = 1-3) with (a) 10-90 wt.% aq. alkali hydroxide soln. by distn. at 50-250 degrees C and 1-100 mbar with a residence time of 0.1-5 hrs. and then (b) C2H2 at 60-250 degrees C and 1-100 bar. Pref. reaction (a) is carried out in a column with at least 2 theoretical plates. (II) and aq. alkali hydroxide soln. are fed into the upper third of the column. A 30-60, esp. 45-55 wt.% soln., more esp. KOH soln., is used. Reaction is carried out at 70-180 degrees C and 1-30 mbar with a residence time of 0.5-2 hrs.

公开(公告)号：DE59303114D1

公开(公告)日：1996-08-08

申请号：DE59303114

申请日：1993-04-24

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：ES2078768T3

公开(公告)日：1995-12-16

申请号：ES93103363

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：DE59600654D1

公开(公告)日：1998-11-19

申请号：DE59600654

申请日：1996-03-08

Applicant: BASF AG

Inventor： HEIDER MARC DR ,  KARCHER MICHAEL DR ,  SCHMIDT-RADDE MARTIN DR ,  DAMS ALBRECHT DR

IPC: C07D233/58 ,  B01D61/36 ,  C07B61/00 ,  C07B63/00 ,  C07C41/08 ,  C07C41/42 ,  C07C43/16 ,  C07C43/162 ,  C07D207/26 ,  C07D223/10 ,  C07D233/54