公开(公告)号：BR0116290A

公开(公告)日：2004-03-02

申请号：BR0116290

申请日：2001-12-21

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  SUTORIS HEINZ-FRIEDRICH ,  SCHROEDER JUERGEN ,  SCHLIEPHAKE VOLKER

IPC: C07C51/44 ,  C07C51/50 ,  C07C57/07 ,  C07C57/075

公开(公告)号：DE10115277A1

公开(公告)日：2002-06-13

申请号：DE10115277

申请日：2001-03-28

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  ADAMI CHRISTOPH ,  HECHLER CLAUS ,  SCHROEDER JUERGEN ,  SCHLIEPHAKE VOLKER ,  THIEL JOACHIM ,  DIEHL VOLKER

IPC: C07C51/44 ,  C07C51/48 ,  C07C57/05 ,  C07C57/07

Abstract: The continuous recovery of (meth)acrylic acid (I) from a reaction gas (II), obtained by catalytic gas phase oxidation, includes quenching (II) by vapor cooling with a high-boiling solvent (III), separating (I) by absorption in (III), and separating the (I)-containing (III) by rectification into a first partial stream (PS1) containing mainly (I) and a second partial stream (PS2) containing mainly (III). The continuous recovery of (meth)acrylic acid (I) from a reaction gas (II), obtained by catalytic gas phase oxidation, comprises: (i) quenching (II) by vapor cooling with a high-boiling solvent (III), (ii) separating (I) by absorption in (III), (iii) separating the (I)-containing (III) into a first partial stream (PS1) containing mainly (I) and a second partial stream (PS2) containing mainly (III), (iv) recycling PS2 to step (ii) and (v) recovering (I) from PS1 by distillation and recycling liquid residual streams to step (i), Step (iii) is carried out by rectification.

公开(公告)号：BR0011403A

公开(公告)日：2002-05-14

申请号：BR0011403

申请日：2000-05-31

Applicant: BASF AG

Inventor： ECK BERND ,  HEILEK J RG ,  BAUMANN DIETER ,  SCHLIEPHAKE VOLKER

IPC: C07C51/64 ,  C07C51/25 ,  C07C51/43 ,  C07C51/47 ,  C07C57/05 ,  C07C57/07

Abstract: Acrylic acid or methacrylic acid is purified by crystallization to obtain crystals and a mother liquor, by a process in which the crystals are washed with a wash liquid containing the acid and having a temperature from 15 to 40° C. Furthermore, a process for the preparation of acrylic acid or methacrylic acid comprises the abovementioned purification process.

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：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：BR9811450A

公开(公告)日：2000-08-15

申请号：BR9811450

申请日：1998-09-10

Applicant: BASF AG

Inventor： ECK BERND ,  MACHHAMMER OTTO ,  PROLL THEO ,  SCHLIEPHAKE VOLKER ,  THIEL JOACHIM ,  LLOS KLAUS BR

IPC: B01D5/00 ,  C07C51/44 ,  C07C57/07

Abstract: A process for the fractional condensation of a gas mixture which, in addition to acrylic acid or methacrylic acid, also contains at least one further condensable component and additionally a high proportion of one or more noncondensable components, wherein the gas mixture is passed through a column having separatory internals and the condensable components are condensed by cooling.

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).

公开(公告)号：CA2303373A1

公开(公告)日：1999-03-25

申请号：CA2303373

申请日：1998-09-10

Applicant: BASF AG

Inventor： SCHLIEPHAKE VOLKER ,  BROLLOS KLAUS ,  THIEL JOACHIM ,  PROLL THEO ,  MACHHAMMER OTTO ,  ECK BERND

IPC: B01D5/00 ,  C07C51/44 ,  C07C57/07

Abstract: The invention relates to a method for the fractional condensation of a gas mixture which contains at least one other condensable constituent in addition to acrylic acid or methacrylic acid and which also has a high proportion of one or several non-condensable constituents. According to said method, the gas mixture is passed through a column with separation-efficient baffles and the condensable constituents are condensed out by cooling.

公开(公告)号：BRPI0519185B1

公开(公告)日：2016-06-21

申请号：BRPI0519185

申请日：2005-12-21

Applicant: BASF AG

Inventor： DIEFENBACHER ARMIN ,  SEIDER BRUNO ,  GERBER BERND ,  BLECHSCHMITT MICHAEL ,  WALTER THOMAS ,  HAMMON ULRICH ,  SCHLIEPHAKE VOLKER ,  SCHNEIDER WOLFGANG

IPC: B01D3/32

Abstract: coluna de bandeja, e, processo para transferência de massa em uma coluna de bandeja. a invenção se refere a uma coluna de bandeja compreendendo bandejas de coluna, dois ou mais suportes (2) os quais são dispostos no lado mais baixo e os quais suportam as bandejas da coluna e um anel de sustentação (4) para as bandejas da coluna os quais estão na parede interna (1) da coluna de bandeja. a invenção é caracterizada por esta colisão tripla entre as coberturas internas da coluna (1), o anel de sustentação (4) e os suportes (2) são impedidos por recortes no procedimento.