公开(公告)号：DE10006900A1

公开(公告)日：2001-08-23

申请号：DE10006900

申请日：2000-02-16

Applicant: BASELL POLYOLEFINE GMBH ,  BASF AG

Inventor： MAEHLING FRANK-OLAF ,  DECKERS ANDREAS ,  LITTMANN DIETER ,  SUTORIS HEINZ FRIEDRICH ,  EVERTZ KASPAR

IPC: C08F2/01 ,  C08F2/38 ,  C08F2/40 ,  C08F10/00 ,  C08F110/02 ,  C08F297/08 ,  C08F10/02

Abstract: The invention relates to a method for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of radically decomposing polymerization initiators in a continuously operating polymerization device. Said polymerization device is composed of a fresh gas supply, a pre-compressor, a post-compressor, a reactor, a pressure maintaining valve, of a high-pressure circuit, which is provided with a high-pressure product separator and with a high-pressure circuit gas return, and of a product valve and a low-pressure circuit, which is provided with a low-pressure product separator and with a low-pressure circuit gas return. The inventive method is characterized in that nitrogen monoxide or oxygen is added in a dosed manner as an inhibitor into the high-pressure circuit, into the low-pressure circuit and/or into the pre-compressor.

公开(公告)号：DE19946136A1

公开(公告)日：2001-03-29

申请号：DE19946136

申请日：1999-09-27

Applicant: BASF AG

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

IPC: C09K15/14 ,  C07B63/04 ,  C07C51/50 ,  C07C57/075 ,  C09K15/24 ,  C09K15/30 ,  C09K15/08 ,  C07D295/24 ,  C07C39/06 ,  C07C57/07

Abstract: Phosphorus-free inhibitor compositions containing (a) N-oxyl radical(s) and (b) a phenol, optionally substituted with up to three 1-4C alkyl, 2-4C alkenyl or 7-10C aralkyl groups. Phosphorus-free inhibitor compositions (I) containing (a) N-oxyl radical(s) and (b) a compound of formula (X). n = 0-3; R = 1-4C alkyl, 2-4C alkenyl or 7-10C aralkyl. Independent claims are also included for: (i) a method for stabilizing materials containing ethylenic double bond(s) against unwanted polymerisation by adding (I) to the material; (ii) a mixture containing an ethylenically unsaturated compound and an effective amount of (I) as polymerisation inhibitor.

公开(公告)号：DE19939031A1

公开(公告)日：2001-02-22

申请号：DE19939031

申请日：1999-08-18

Applicant: BASF AG

Inventor： BRINKMANN-RENGEL SUSANNE ,  HAREMZA SYLKE ,  SUTORIS HEINZ FRIEDRICH ,  CHRISTIE DAVID ,  RAETHER ROMAN BENEDIKT ,  CAO JIZHUANG

IPC: C07D241/04 ,  C07D265/30 ,  C07D265/34 ,  C07D279/12 ,  C07D279/14 ,  C08F2/00 ,  C08F2/38 ,  C08F4/00 ,  C08F12/08 ,  C08K5/34 ,  C08K5/3462 ,  C08K5/357 ,  C08K5/46 ,  C09K15/30 ,  C07D241/36 ,  C07D279/32 ,  C07D279/34

Abstract: The invention relates to N-oxyl radicals of formula (I) wherein X represents S, NR , O, SO or SO2, and; R , R , R , R , and R , independent of one another, represent organic groups or; R and R and/or R and R , together with the carbon atom that carries them, represent a ring comprised of at least 3 atoms. The N-oxyl radicals are suited for controlling radical polymerizations and for stabilizing ethylenically unsaturated monomers against unwanted polymerization.

公开(公告)号：CA2314875A1

公开(公告)日：2001-02-17

申请号：CA2314875

申请日：2000-08-03

Applicant: BASF AG

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

IPC: C09K15/08 ,  C07B63/04 ,  C07C7/20 ,  C07C51/50 ,  C07C67/62 ,  C09K15/02 ,  C09K15/04 ,  C09K15/20 ,  C09K15/24 ,  C09K15/30 ,  C09K15/32

Abstract: An inhibitor mixture containing, as components, a) at least one nitroxyl radical (derivative), b) at least one phenol (derivative) and c) at least one chemic al compound which contains at least one phosphorus atom which has the oxidation state +3 is preferably used for stabilizing compounds capable of free radical polymerization.

公开(公告)号：AU5404300A

公开(公告)日：2001-01-02

申请号：AU5404300

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：AU3806900A

公开(公告)日：2000-09-14

申请号：AU3806900

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：CA2364265A1

公开(公告)日：2000-08-31

申请号：CA2364265

申请日：2000-02-25

Applicant: BASF AG

Inventor： SUTORIS HEINZ FRIEDRICH ,  MITULLA KONRAD

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

Abstract: The invention relates to a method for the continuous recovery of styrene fro m 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 leas t one of the distillation columns positioned upstream of the nth distillation column, whereby said stabilizer system comprises N-oxyl radicals; (ii) in th e 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：DE19859391A1

公开(公告)日：2000-06-29

申请号：DE19859391

申请日：1998-12-22

Applicant: BASF AG

Inventor： SUTORIS HEINZ FRIEDRICH ,  DECKERS ANDREAS ,  WEBER WILHELM

IPC: C07B63/04 ,  C07C7/20 ,  C07C11/02 ,  C07C11/04 ,  C08F2/40 ,  C08F2/44 ,  C08F10/00 ,  C08F210/00 ,  C08F236/06

Abstract: A process for the compression of ethylenically unsaturated monomers at a pressure of 200-5,000 bar in the absence of a polymerization initiator is carried out in the presence of a nitroxyl compound (I). A process for the condensation of ethylenically unsaturated monomers at a pressure of 200-5,000 bar in the absence of a polymerization initiator is carried out in the presence of a nitroxyl compound of formula (I). Independent claims are included for: (i) a process for the production of copolymers by condensation of the comonomer, optionally as a mixture in the presence of (I) followed by polymerization at 50-350 degrees C by addition of a polymerization initiator; (ii) the resulting copolymer product. R , R = 1-4C alkyl or R and R together with the C atom they are bonded to form a 5 or 6 C saturated hydrocarbon ring; R = 1-4C alkyl; R = H or 1-12C alkyl.

公开(公告)号：AU2431000A

公开(公告)日：2000-06-26

申请号：AU2431000

申请日：1999-12-07

Applicant: BASF AG

Inventor： SUTORIS HEINZ FRIEDRICH ,  WAGENBLAST GERHARD ,  SCHLIEPHAKE VOLKER ,  SCHRODER JURGEN ,  MULLER-ENGEL KLAUS JOACHIM ,  KELLER HARALD ,  JAWOREK THOMAS

IPC: C07C45/86 ,  C07B63/04 ,  C07C47/22 ,  C07C51/50 ,  C07C51/64 ,  C07C57/075 ,  C07C67/62 ,  C07C69/54 ,  C07C51/00

公开(公告)号：DE19856565A1

公开(公告)日：2000-06-15

申请号：DE19856565

申请日：1998-12-08

Applicant: BASF AG

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

IPC: C07C45/86 ,  C07B63/04 ,  C07C47/22 ,  C07C51/50 ,  C07C51/64 ,  C07C57/075 ,  C07C67/62 ,  C07C69/54 ,  C01B25/163 ,  C07C291/04 ,  C07D211/94 ,  C07F9/141

Abstract: A method for stabilizing chemical compounds containing at least one ethylenically unsaturated bond in order to prevent undesirable radical polymerization, whereby a nitroxyl radical and a chemical compound containing chemically bonded phosphorus are added to an unsaturated compound existing in the form of a pure substance or constituent in a mixture.