公开(公告)号：CA2332508A1

公开(公告)日：1999-11-25

申请号：CA2332508

申请日：1999-05-17

Applicant: BASF AG

Inventor： ODENWALD OLIVER ,  FRIED MICHAEL ,  NESTLER GERHARD ,  AICHINGER HEINRICH

IPC: B65D90/44 ,  B01J4/00 ,  B01J19/00 ,  B67D7/02 ,  C08F2/01 ,  C08F2/42 ,  B67D5/02

Abstract: The invention relates to a supply system for transferring a fluid to a container (1) fitted with a supply line (10). The system comprises a storage chamber filled with the fluid and a compressed gas store (14) which can be connected with said storage chamber (13). The storage chamber (13) and the compressed gas store (14) are positioned in direct proximity to each other and the storage chamber (13) can, if necessary, be connected to the supply line (10) by means of connecting elements (11, 12).

公开(公告)号：BR9713288A

公开(公告)日：1999-10-26

申请号：BR9713288

申请日：1997-11-21

Applicant: BASF AG

Inventor： AICHINGER HEINRICH ,  NESTLER GERHARD ,  DAMS ALBRECHT ,  FRIED MICHAEL

IPC: C07C67/08 ,  C07C67/58 ,  C07C69/54

Abstract: A process is described for preparing (meth)acrylic esters by reacting (meth)acrylic acid with C4-C12-alkanols in the presence of sulfuric acid or a mono-C4-C12-alkyl sulfate as catalyst, where the catalyst is regenerated by extraction with water from the reaction mixture and the aqueous catalyst solution is recycled back to the esterification, the concentration of unreacted alkanol in the reaction mixture to be extracted being not more than 5% by weight, based on the reaction mixture to be extracted.

公开(公告)号：DE59602784D1

公开(公告)日：1999-09-23

申请号：DE59602784

申请日：1996-09-26

Applicant: BASF AG

Inventor： BAUR KARL GERHARD ,  ANNEN ULRICH ,  EXNER HERBERT ,  FRIED MICHAEL ,  RAUH ULRICH

IPC: C07C67/08 ,  C07C67/327 ,  C07C69/54

Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.

公开(公告)号：CZ173199A3

公开(公告)日：1999-09-15

申请号：CZ173199

申请日：1997-11-21

Applicant: BASF AG

Inventor： AICHINGER HEINRICH ,  FRIED MICHAEL ,  NESTLER GERHARD

IPC: C07C67/08 ,  C07C67/58 ,  C07C69/54

Abstract: (Meth)acrylic esters are prepared by reacting (meth)acrylic acid with a C4-C12-alkanol in the presence of sulfuric acid or a mono-C4-C12-alkyl sulfate as catalyst, whereina) the reaction is carried out in an esterification unit which comprises a first reactor and at least one further reactor,b) a mixture of (meth)acrylic acid, C4-C12-alkanol and catalyst which contains not more than 5% by weight of water, based on the sum of the starting materials, is introduced into the first reactor,c) the esterification in the first reactor is conducted without removing ester, alkanol or water to a (meth)acrylic acid conversion of at least 40%, but only so far that the mixture remains a single phase, andd) the esterification is continued in at least one further reactor with the water formed being removed by distillation.

公开(公告)号：AU1664599A

公开(公告)日：1999-05-17

申请号：AU1664599

申请日：1998-10-27

Applicant: BASF AG

Inventor： FRIED MICHAEL ,  NESTLER GERHARD ,  KAGELER PAUL LEON ,  JAMES LAWRENCE EDWIN

IPC: B63B25/08 ,  C08F2/42 ,  C08F20/02

Abstract: Free radical polymerizations are immediately terminated by adding a phenothiazine-containing solution whose solvent comprises at least 50% of its weight of an N-alkylpyrrolidone.

公开(公告)号：AU5485298A

公开(公告)日：1998-06-22

申请号：AU5485298

申请日：1997-11-21

Applicant: BASF AG

Inventor： AICHINGER HEINRICH ,  FRIED MICHAEL ,  NESTLER GERHARD ,  DAMS ALBRECHT

IPC: C07C67/08 ,  C07C67/58 ,  C07C69/54

Abstract: A process is described for preparing (meth)acrylic esters by reacting (meth)acrylic acid with C4-C12-alkanols in the presence of sulfuric acid or a mono-C4-C12-alkyl sulfate as catalyst, where the catalyst is regenerated by extraction with water from the reaction mixture and the aqueous catalyst solution is recycled back to the esterification, the concentration of unreacted alkanol in the reaction mixture to be extracted being not more than 5% by weight, based on the reaction mixture to be extracted.

公开(公告)号：AU5408073A

公开(公告)日：1974-10-10

申请号：AU5408073

申请日：1973-04-04

Applicant: BASF AG

Inventor： ZUERN LUDWIG ,  STAHNECKER ERHARD ,  FRIED MICHAEL ,  MOELLER ROLF

IPC: C08F2/00 ,  C08F20060101 ,  C08F2/04 ,  C08F2/10 ,  C08F26/00 ,  C08F26/08 ,  C08F26/10 ,  C08F7/12 ,  C08F1/60 ,  C08F1/76 ,  C08F1/78

Abstract: Solutions of N-vinylpyrrolidone polymers can be prepared with particular advantage by polymerization of N-vinylpyrrolidone in an aqueous medium by adding the polymerization catalyst in portions or continuously to the monomer solution in the form of a finely divided suspension in an aqueous solution of N-vinylpyrrolidone polymer.