公开(公告)号：DE59707073D1

公开(公告)日：2002-05-23

申请号：DE59707073

申请日：1997-09-18

Applicant: BASF AG

Inventor： MARTIN FRIEDRICH-GEORG ,  SCHRAUT ARMIN ,  WEKERLE JOSEF

IPC: C07C67/08 ,  C07C67/48 ,  C07C69/54

Abstract: In the preparation of esters of acrylic or methacrylic acid by esterification with alcohols, the interfering deposits formed on the apparatus parts by relatively high molecular weight by-products can be avoided, removed or lessened by allowing a liquid partly or wholly consisting of the alcohol used for the esterification to act on the deposits, fouled apparatus parts or on the surfaces of the apparatus parts on which deposits are easily formed, with preference being given to wetting the deposits or surfaces using suitable nozzles or cleaning sprayers.

公开(公告)号：CZ9900828A3

公开(公告)日：1999-06-16

申请号：CZ82899

申请日：1997-09-18

Applicant: BASF AG

Inventor： MARTIN FRIEDRICH-GEORG ,  SCHRAUT ARMIN ,  WEKERLE JOSEF

IPC: C07C67/08 ,  C07C67/48 ,  C07C69/54

CPC classification number: C07C67/08 ,  C07C69/54

公开(公告)号：CZ82899A3

公开(公告)日：1999-06-16

申请号：CZ82899

申请日：1997-09-18

Applicant: BASF AG

Inventor： MARTIN FRIEDRICH-GEORG ,  SCHRAUT ARMIN ,  WEKERLE JOSEF

IPC: C07C67/08 ,  C07C67/48 ,  C07C69/54

Abstract: In the preparation of esters of acrylic or methacrylic acid by esterification with alcohols, the interfering deposits formed on the apparatus parts by relatively high molecular weight by-products can be avoided, removed or lessened by allowing a liquid partly or wholly consisting of the alcohol used for the esterification to act on the deposits, fouled apparatus parts or on the surfaces of the apparatus parts on which deposits are easily formed, with preference being given to wetting the deposits or surfaces using suitable nozzles or cleaning sprayers.

公开(公告)号：ID21820A

公开(公告)日：1999-07-29

申请号：ID990084

申请日：1997-09-18

Applicant: BASF AG

Inventor： MARTIN FRIEDRICH-GEORG ,  SCHRAUT ARMIN ,  WEKERLE JOSEF

IPC: C07C67/08 ,  C07C67/48 ,  C07C69/54

Abstract: In the preparation of esters of acrylic or methacrylic acid by esterification with alcohols, the interfering deposits formed on the apparatus parts by relatively high molecular weight by-products can be avoided, removed or lessened by allowing a liquid partly or wholly consisting of the alcohol used for the esterification to act on the deposits, fouled apparatus parts or on the surfaces of the apparatus parts on which deposits are easily formed, with preference being given to wetting the deposits or surfaces using suitable nozzles or cleaning sprayers.

公开(公告)号：CA2265552A1

公开(公告)日：1998-03-26

申请号：CA2265552

申请日：1997-09-18

Applicant: BASF AG

Inventor： MARTIN FRIEDRICH-GEORG ,  WEKERLE JOSEF ,  SCHRAUT ARMIN

IPC: C07C67/08 ,  C07C67/48 ,  C07C69/54

Abstract: When producing esters of acrylic or methacrylic acid by esterification with alcohols troublesome deposits of high molecular byproducts build up in parts of the apparatus. Said deposits can be prevented, removed or reduced by applying a liquid in the parts of the apparatus contaminated with deposits or on those surfaces where deposits easily build up. Said liquid is partially or totally made out of the alcohol used for esterification. The moistening is performed preferably by means of appropriate nozzles or cleansing jets.

公开(公告)号：DE19638093A1

公开(公告)日：1998-03-19

申请号：DE19638093

申请日：1996-09-18

Applicant: BASF AG

Inventor： MARTIN FRIEDRICH-GEORG DR ,  SCHRAUT ARMIN DR ,  WEKERLE JOSEF

IPC: C07C67/08 ,  C07C67/48 ,  C07C69/54 ,  C08F20/18 ,  C08F20/14

Abstract: When producing esters of acrylic or methacrylic acid by esterification with alcohols troublesome deposits of high molecular byproducts build up in parts of the apparatus. Said deposits can be prevented, removed or reduced by applying a liquid in the parts of the apparatus contaminated with deposits or on those surfaces where deposits easily build up. Said liquid is partially or totally made out of the alcohol used for esterification. The moistening is performed preferably by means of appropriate nozzles or cleansing jets.