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：DE2361950A1

公开(公告)日：1975-06-19

申请号：DE2361950

申请日：1973-12-13

Applicant: BASF AG

Inventor： HELFERT HERBERT DR ,  UHL GUENTER ,  DACHS KARL DR ,  FIKENTSCHER ROLF DR ,  SCHARPENBERG HANS-GEORG DR

IPC: C09D17/00 ,  D06P1/44 ,  C09D11/02

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：CH633193A5

公开(公告)日：1982-11-30

申请号：CH246778

申请日：1978-03-07

Applicant: BASF AG

Inventor： PERNER JOHANNES DR ,  FREY GUENTER DR ,  HELFERT HERBERT DR ,  FIKENTSCHER ROLF DR

IPC: B01D19/04 ,  C11D3/00 ,  C11D3/28

公开(公告)号：CH602702A5

公开(公告)日：1978-07-31

申请号：CH291576

申请日：1976-03-09

Applicant: BASF AG

Inventor： OPPENLAENDER KNUT DR ,  UHL GUENTER ,  HELFERT HERBERT DR ,  SCHARPENBERG HANS-GEORG DR ,  STORK KARL DR

IPC: C07D319/06 ,  C07D493/04 ,  C08G65/00 ,  C08G65/26 ,  C08G65/28 ,  C09K23/00 ,  C09K23/42 ,  C07D325/00 ,  B01F17/42

Abstract: Cyclic acetals or ketals of carbonyl compounds having at least one aliphatic or aromatic radical, and polyhydric alcohols which have at least one more hydroxyl group than those required for acetalization, and which are furthermore oxyalkylated at the free hydroxyl group or groups.

公开(公告)号：DE4405199A1

公开(公告)日：1995-08-24

申请号：DE4405199

申请日：1994-02-18

Applicant: BASF AG

Inventor： HUCKESTEIN BRIGITTA DR ,  BLANKENBURG RAINER DR ,  HELFERT HERBERT DR

IPC: C07D207/26 ,  C07D207/267 ,  C08F26/06

Abstract: Binding chemical impurities in crude N-vinyl-pyrrolidone-(2) (I) comprises addn. of an anhydride of an organic carboxylic acid to the crude (I).

公开(公告)号：DE3238394A1

公开(公告)日：1984-04-19

申请号：DE3238394

申请日：1982-10-16

Applicant: BASF AG

Inventor： POMMER ERNST-HEINRICH DR ,  KOESTER GUENTHER ,  AXEL HARTMUT DR ,  HELFERT HERBERT DR ,  LORENZ KLAUS DR

IPC: A01N33/12 ,  C02F1/50 ,  D21F1/66

Abstract: Biocidal preparations comprising compounds of the formula I in which: R is C6- to C12-alkyl, R is C6- to C9-alkyl, C11- to C12-alkyl, C8/C10-alkyl mixture, R is H or CH3, n is 1 to 5 and x is halide, methosulphate or toluenesulphonate.

公开(公告)号：DE3161143D1

公开(公告)日：1983-11-17

申请号：DE3161143

申请日：1981-01-30

Applicant: BASF AG

Inventor： HELFERT HERBERT DR ,  WULZ KLAUS DR ,  GETTO ELMAR ,  HETTCHE ALBERT DR

IPC: C07C51/41 ,  C07C57/02 ,  C09K23/00 ,  C09K23/16 ,  C09K23/22 ,  C09K23/34 ,  C10M113/04 ,  C10M173/00 ,  C23F11/14 ,  B01F17/16 ,  B01F17/22 ,  C07C102/04 ,  C07C103/133

Abstract: 1. A process for the preparation of reaction products of alkanolamines with unsaturated fatty acids of 12 to 30 carbon atoms or fatty acid mixtures of 12 to 30 carbon atoms containing unsaturated constituents by reacting the components at elevated temperature, wherein the fatty acid component and at least one dialkanolamine of 2 or 3 carbon atoms per hydroxyalkyl radical are allowed to act on one another in a molar ratio of 1:1.0 to 1.6 at a temperature of from 110 to 140 degrees C in the absence of solvents, and the reaction is discontinued when the reaction mixture has an acid number of 45 to 75.

公开(公告)号：DE3062596D1

公开(公告)日：1983-05-11

申请号：DE3062596

申请日：1980-05-16

Applicant: BASF AG

Inventor： HELFERT HERBERT DR ,  REINERT FRIEDRICH DR ,  RICHTER PAUL DR ,  VESCIA MICHELE DR ,  WEGERLE DIETER DR

IPC: D06M13/46 ,  D06P1/66 ,  D06P5/06 ,  D06M5/02

Abstract: A process for removing oligomer deposits from dyed and non-dyed textile materials which consist of polyester fibers or of blends of these fibers with other fibers, and from dyeing machinery, by a treatment with an aqueous, alkaline liquor which contains from 0.1 to 10 g/l of a quaternary ammonium compound carrying not less than two C6-C22-alkyl or -alkenyl groups on the quaternary nitrogen, at up to 100 DEG C. The oligomers are hydrolyzed and are removed together with the treatment liquor.