公开(公告)号：AT261423T

公开(公告)日：2004-03-15

申请号：AT00938781

申请日：2000-06-09

Applicant: BASF AG

Inventor： SUTORIS HEINZ 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：DE10238145A1

公开(公告)日：2003-11-27

申请号：DE10238145

申请日：2002-08-15

Applicant: BASF AG

Inventor： DIEHL VOLKER ,  SUTORIS HEINZ FRIEDRICH ,  BECKMANN STEFAN

IPC: B01D3/14 ,  B01D3/34 ,  C07C51/44 ,  C07C67/54 ,  C07C57/075 ,  C07C57/07 ,  C07C67/62 ,  C07C69/54

Abstract: A process for the working-up of mixtures containing (meth)acrylic acid and/or (meth)acrylic acid ester in a column for distillation, rectification and/or fractional condensation in the presence of a polymerization inhibitor and an oxygen containing gas comprises at least partial dosing in of the oxygen containing gas in the upper part of the column. An Independent claim is included for a separating device (I) comprising a column for distillation, rectification and/or fractional condensation having effective separating inserts, at least one condenser at the head of the column and at least 2 possible means for removing product streams, further comprising at least one having an external connection for dosing in of gas in the upper part of the column, that is star-shaped or ring-shaped or comprises a number of concentric rings that are regularly or irregularly arranged.

公开(公告)号：DE10055645A1

公开(公告)日：2001-12-20

申请号：DE10055645

申请日：2000-11-10

Applicant: BASF AG

Inventor： JAWOREK THOMAS ,  KELLER HARALD ,  SCHLIEPHAKE VOLKER ,  SCHROEDER JUERGEN ,  SUTORIS HEINZ FRIEDRICH ,  WAGENBLAST GERHARD

IPC: C08F2/00 ,  C09D4/02 ,  C09D183/12 ,  B05D7/16

Abstract: Use of a liquid composition (A), based on organosilanols (I), for inhibiting polymerization reactions of ethylenically unsaturated monomers (II) on surfaces with which (II) come into contact during processing.

公开(公告)号：BR0008544A

公开(公告)日：2001-11-06

申请号：BR0008544

申请日：2000-02-25

Applicant: BASF AG

Inventor： MITULLA KONRAD ,  SUTORIS HEINZ 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：CA2320559A1

公开(公告)日：2001-03-27

申请号：CA2320559

申请日：2000-09-25

Applicant: BASF AG

Inventor： SCHLIEPHAKE VOLKER ,  SUTORIS HEINZ FRIEDRICH ,  WAGENBLAST GERHARD ,  SCHRODER JURGEN ,  KELLER HARALD ,  NESTLER GERHARD

IPC: C09K15/14 ,  C07B63/04 ,  C07C51/50 ,  C07C57/075 ,  C09K15/24 ,  C07C69/54 ,  C07C255/08 ,  C07C233/09 ,  C07C7/20 ,  C09K15/20 ,  C07C47/22 ,  C07C231/22 ,  C09K15/30 ,  C07C253/32 ,  C07C69/60 ,  C07C67/62 ,  C07C45/86

Abstract: A phosphorus-free inhibitor composition comprising a) at least one N-oxyl radical and b) a compound of the formula (x) where n is an integer from 0 to 3 and R is C1-C4-alkyl, C2-C4-alkenyl or C7-C10-aralkyl, is described. The inhibitor composition is useful for preventing undesired polymerization of ethylenically unsaturated compounds.

公开(公告)号：DE19956509A1

公开(公告)日：2001-01-18

申请号：DE19956509

申请日：1999-11-24

Applicant: BASF AG

Inventor： SUTORIS HEINZ FRIEDRICH ,  WAGENBLAST GERHARD ,  SCHLIEPHAKE VOLKER ,  SCHROEDER JUERGEN ,  KELLER HARALD

IPC: C07B63/04 ,  C07C51/50 ,  C07C57/075 ,  C07B63/00 ,  C07D211/94

Abstract: Inhibitor composition comprises a nitroxyl radical(s) (derivative) and a phenothiazine(s) and/or phenothiazine derivative(s). Inhibitor composition comprises a nitroxyl radical(s) (derivative) (N) and a phenothiazine(s) and/or phenothiazine derivative(s) (P) in a N/P weight ratio of at least 1. An Independent claim is included for a mixture comprising the above inhibitor composition and an ethylenically unsaturated compound(s).

公开(公告)号：DE19922103A1

公开(公告)日：2000-11-23

申请号：DE19922103

申请日：1999-05-17

Applicant: BASF AG

Inventor： SUTORIS HEINZ FRIEDRICH ,  MITULLA KONRAD

IPC: C07B63/04 ,  C07C67/62 ,  C07C69/54 ,  C07D211/94

Abstract: A mixture comprises: (A) a vinyl compound, together with (B) a nitroxyl compound of a secondary amine free of H atoms at the alpha -carbon; (C) a retarder; (D) O2; and optionally (E) a transition metal compound; and (F) a co-stabiliser.

公开(公告)号：AU4913200A

公开(公告)日：2000-11-02

申请号：AU4913200

申请日：2000-04-18

Applicant: BASF AG

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

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

公开(公告)号：DE19917675A1

公开(公告)日：2000-10-26

申请号：DE19917675

申请日：1999-04-19

Applicant: BASF AG

Inventor： BRINKMANN-RENGEL SUSANNE ,  NIESNER NORBERT ,  SUTORIS HEINZ FRIEDRICH ,  MC KEE GRAHAM EDMUND ,  KNOLL KONRAD ,  CHRISTIE DAVID

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

Abstract: Preparation of rubber-elastic block copolymer (I), consisting of block (A) formed from vinyl aromatic monomers as rigid phase, or block (B) formed from diene monomers as flexible phase; and block (B)/(A) formed from vinyl aromatic and diene monomers as flexible phase, is claimed. The monomers are polymerized using radical polymerization initiator(s) (II). Preparation of rubber-elastic block copolymer (I), consisting of block(s) (A) formed from vinyl aromatic monomers and having glass transition temperature (Tg) of at least 25 deg C as rigid phase; or block(s) (B) formed from diene monomers as flexible phase; and block(s) (B)/(A) formed from vinyl aromatic and diene monomers and having Tg below 25 deg C as (possibly additional) flexible phase, is claimed. The monomers are polymerized using radical polymerization initiator(s) (II). An Independent claim is included for the polymers (I) obtained by the process.

公开(公告)号：DE19915165A1

公开(公告)日：2000-06-29

申请号：DE19915165

申请日：1999-04-01

Applicant: BASF AG

Inventor： KELLER HARALD ,  JAWOREK THOMAS ,  SCHLIEPHAKE VOLKER ,  SCHROEDER JUERGEN ,  SUTORIS HEINZ FRIEDRICH ,  WAGENBLAST GERHARD ,  HUFF JUERGEN

IPC: C07B63/04 ,  C07D233/54 ,  C07D233/58 ,  C07D279/20 ,  C07B63/00 ,  C07D279/14

Abstract: An inhibitor composition (I) contains: (A) a polyvinylimidazole; and (B) a phenothiazine. An Independent claim is also included for a stabilized mixture (II) containing a radically polymerizable compound and a polyvinylimidazole (A).