公开(公告)号：DE59706907D1

公开(公告)日：2002-05-08

申请号：DE59706907

申请日：1997-11-28

Applicant: BASF AG

Inventor： SUTORIS FRIEDRICH ,  UHR HERMANN ,  MITULLA KONRAD ,  SCHROEDER JUERGEN ,  MERGER ROLAND ,  KESSEL KNUT

IPC: C07C7/20 ,  C07B63/04 ,  C07C15/46 ,  C07C67/62 ,  C08F2/40 ,  C08F4/00

公开(公告)号：DE59701956D1

公开(公告)日：2000-08-03

申请号：DE59701956

申请日：1997-11-11

Applicant: BASF AG

Inventor： LYNCH JOHN ,  SUTORIS FRIEDRICH ,  ZUBILLER JUERGEN ,  AUMUELLER ALEXANDER

IPC: C08J9/20 ,  C08F2/00 ,  C08F2/16 ,  C08F2/40 ,  C08F2/44 ,  C08F12/08 ,  C08F14/06

Abstract: Vinyl monomers are polymerized in the aqueous phase in the presence of at least one N-oxyl compound of a secondary amine, having no hydrogen atoms bonded to the alpha carbon atoms. This process substantially eliminates deposits on reactor surfaces.

公开(公告)号：DE50006966D1

公开(公告)日：2004-08-05

申请号：DE50006966

申请日：2000-04-18

Applicant: BASF AG

Inventor： BRINKMANN-RENGEL SUZANNE ,  NIESSNER NORBERT ,  SUTORIS FRIEDRICH ,  MC KEE EDMUND ,  KNOLL KONRAD ,  CHRISTIE DAVID

IPC: C08F293/00 ,  C08F297/04 ,  C08L53/02 ,  C09D153/02

公开(公告)号：DE59807329D1

公开(公告)日：2003-04-03

申请号：DE59807329

申请日：1998-08-19

Applicant: BASF AG

Inventor： FISCHER MICHAEL ,  MC KEE EDMUND ,  SUTORIS FRIEDRICH

IPC: C08L57/00 ,  C08F2/22 ,  C08F2/26 ,  C08F4/00 ,  C08F4/04 ,  C08F4/34 ,  C08F12/08 ,  C08F20/14 ,  C08F20/44 ,  C08F36/04 ,  C08F285/00 ,  C08F291/00

Abstract: The invention relates to a method for producing particulate polymers P by radically initiated aqueous emulsion polymerization, wherein at least one ethylenically unsaturated monomer is emulsified by means of a dispersing agent in an aqueous medium and polymerized by means of a radical polymerization initiator in the presence of a stable N-oxyl radical so that an aqueous polymer dispersion is obtained. According to the inventive method: a) a peroxide, a hydroperoxide and/or an azoic compound are used as a radical polymerization initiator, whose molar solubility at 25 DEG C and 1 bar in water is greater than or the same as the corresponding molar solubility of tert-butyl hydroperoxide in water and whose decomposition temperature in a polymerization medium is

公开(公告)号：DE50005600D1

公开(公告)日：2004-04-15

申请号：DE50005600

申请日：2000-06-09

Applicant: BASF AG

Inventor： SUTORIS FRIEDRICH ,  MITULLA KONRAD

IPC: B01J19/00 ,  C07B63/04 ,  C07C7/05 ,  C07C7/20 ,  C07C15/46 ,  C08F2/38 ,  C08F2/40 ,  C08F12/00

Abstract: A process for preventing undesired polymerization is conducted by maintaining an effective concentration of a stabilizer which comprises N-oxyl radicals in a mixture containing ethylenically unsaturated compounds, wherein(i) an electronic signal which correlates with the concentration of the N-oxyl radicals in the mixture is obtained periodically or continuously,(ii) the electronic signal is compared with a reference value, and(iii) addition of a stabilizer to the mixture is controlled according to the comparison (ii).The signal is preferably obtained by ESR measurement. The process permits efficient use of the stabilizer.

公开(公告)号：DE59708836D1

公开(公告)日：2003-01-09

申请号：DE59708836

申请日：1997-09-09

Applicant: BASF AG

Inventor： SUTORIS FRIEDRICH ,  KOCH ANDREAS ,  AUMUELLER ALEXANDER ,  DUPUIS JACQUES ,  NIESSNER MANFRED

IPC: C07D233/08 ,  C07B63/04 ,  C07C17/42 ,  C07C21/06 ,  C07C41/46 ,  C07C43/16 ,  C07C69/025 ,  C07C69/07 ,  C07C231/22 ,  C07C233/03 ,  C07D207/267 ,  C07D211/94 ,  C07D213/89 ,  C08F2/40 ,  C08K5/3435 ,  C09K15/30

Abstract: A monomer composition, which containsA) vinyl-containing monomers in which a heteroatom selected from the group consisting of the halogens, nitrogen, oxygen, sulfur and silicon is present on the vinyl group, andB) a compound or a mixture of compounds of the formula II whereR4 is methyl, ethyl, isopropyl, n-propyl, n-butyl, isobutyl, sec-butyl, tert-butyl or trimethylsilyl.

公开(公告)号：DE59912996D1

公开(公告)日：2006-02-02

申请号：DE59912996

申请日：1999-12-07

Applicant: BASF AG

Inventor： SUTORIS FRIEDRICH ,  WAGENBLAST GERHARD ,  SCHLIEPHAKE VOLKER ,  SCHROEDER JUERGEN ,  MUELLER-ENGEL JOACHIM ,  KELLER HARALD ,  JAWOREK THOMAS

IPC: C07C45/86 ,  C07B63/04 ,  C07C47/22 ,  C07C51/50 ,  C07C51/64 ,  C07C57/075 ,  C07C67/62 ,  C07C69/54

公开(公告)号：DE50003637D1

公开(公告)日：2003-10-16

申请号：DE50003637

申请日：2000-02-25

Applicant: BASF AG

Inventor： MITULLA KONRAD ,  SUTORIS FRIEDRICH

IPC: B01D3/32 ,  C07B63/04 ,  C07C7/05 ,  C07C7/20 ,  C07C15/46

Abstract: The invention relates to a method for the continuous recovery of styrene from a mixture containing same, by distillation of the mixture in a cascade of n distillation columns. According to said method, (i) an inflow containing a stabilizer system is fed into the first column and/or is placed into at least one of the distillation columns positioned upstream of the nth distillation column, whereby said stabilizer system comprises N-oxyl radicals; (ii) in the bottom of the nth distillation column a high-boiling fraction containing the stabilizer system and boiling at a higher temperature than styrene is concentrated; (iii) a partial flow of the high-boiling fraction is recycled and placed into at least one distillation column positioned upstream of the nth distillation column; and (iv) the remainder of the high-boiling fraction is withdrawn from the process.

公开(公告)号：DE59805252D1

公开(公告)日：2002-09-26

申请号：DE59805252

申请日：1998-06-18

Applicant: BASF AG

Inventor： FISCHER MICHAEL ,  MORRISON RONALD ,  SUTORIS FRIEDRICH ,  DURANT YVON

IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F4/00 ,  C08F4/04 ,  C08F4/28 ,  C08F4/34

Abstract: A process of free-radically initiated aqueous emulsion polymerization, in which monomers are polymerized in the presence of a N-oxyl radical and by means of special free-radical polymerization initiators at more than 100° C. and at pressures above the vapor pressure of the polymerization mixture.