公开(公告)号：BRPI0911187A2

公开(公告)日：2015-10-13

申请号：BRPI0911187

申请日：2009-04-27

Applicant: BASF SE

Inventor： RUMPF BERND ,  MULLER-ENGEL KLAUS JOACHIM ,  ZUROWSKI PETER ,  RISSEL STEFFEN ,  HAREMZA SYLKE ,  FRIESE THORSTEN ,  BLUM TILL ,  JAGER ULRICH ,  SCHLIEPHAKE VOLKER

IPC: C07C57/04 ,  B01J19/00

公开(公告)号：BR112013008419A2

公开(公告)日：2016-06-28

申请号：BR112013008419

申请日：2011-10-04

Applicant: BASF SE

Inventor： MARTIN FRIEDRICH-GEORG ,  ZUROWSKI PETER ,  RISSEL STEFFEN ,  HAREMZA SYLKE ,  FRIESE THORSTEN ,  BLUM TILL ,  KORN TOBIAS JOHANNES ,  JAGER ULRICH ,  SCHLIEPHAKE VOLKER

IPC: C07C51/50 ,  C07C57/04

Abstract: processo para inibir a polimerização por radical livre não desejada do ácido acrílico, e, fase líquida. um processo para inibir a polimerização por radical livre não desejada do ácido acrílico presente em uma fase líquida p cujo teor do ácido acrílico é de pelo menos 10% em peso e que, com base no peso do ácido acrílico presente neste, adicionalmente compreende pelo menos 100 ppm em peso de ácido propiônico e de pelo menos 100ppm em peso de glioxal, em que pelo menos um composto químico do elemento cobre é adicionado à fase líquida p e as fases p líquidas resultantes às quais um composto líquido do elemento cobre foi adicionado.

公开(公告)号：CA2885926A1

公开(公告)日：2014-04-10

申请号：CA2885926

申请日：2013-09-23

Applicant: BASF SE

Inventor： JAGER ULRICH ,  SCHLIEPHAKE VOLKER ,  LANG ORTMUND ,  PETZOLDT JOCHEN ,  KORN TOBIAS JOHANNES ,  BETTE VIRGINIE ,  HECHLER CLAUS

IPC: C07C67/08 ,  C07C67/54

Abstract: A continuous method for producing (meth)acrylates from C10 alcohol mixtures by reacting pure (meth)acrylic acid with an isomeric mixture of C10 alcohols of 2-propylheptanol as main isomer and at least one of the C10 alcohols 2-propyl-4-methylhexanol, 2-propyl-5-methylhexanol, 2-isopropylheptanol, 2-isopropyl-4-methylhexanol, 2-isopropyl-5-methylhexanol and/or 2-propyl-4,4-dimethylpentanol, and the use of a diester of dicarboxylic acids which are esterified with N-oxyl group containing compounds, as polymerisation inhibitors in such a method.

公开(公告)号：ZA201008470B

公开(公告)日：2012-02-29

申请号：ZA201008470

申请日：2010-11-25

Applicant: BASF SE

Inventor： BLUM TILL ,  ZUROWSKI PETER ,  RISSEL STEFFEN ,  HAREMZA SYLKE ,  FRIESE THORSTEN ,  JAGER ULRICH ,  SCHLIEPHAKE VOLKER ,  MULLER-ENGEL KLAUS JOACHIM ,  RUMPF BERND

IPC: B01J20060101 ,  C07C20060101

Abstract: A process for transferring heat to a liquid F comprising dissolved monomeric acrylic acid, Michael acrylic acid oligomers, and acrylic acid polymer with the aid of an indirect heat exchanger to which are supplied the liquid F with a temperature TF of >=150° C. and a fluid heat carrier W with a temperature of TW>TF, wherein the formation of gas bubbles and/or of thin layers of liquid F adjoining a gas phase is brought about in the liquid F during the flow through the heat exchanger.

公开(公告)号：ZA201205143B

公开(公告)日：2013-09-25

申请号：ZA201205143

申请日：2012-07-11

Applicant: BASF SE

Inventor： LIPOWSKY GUNTER ,  RISSEL STEFFEN ,  SCHLIEPHAKE VOLKER ,  JAGER ULRICH ,  HAREMZA SYLKE

IPC: C07C20060101

Abstract: A process for inhibiting polymerization of (meth)acrylic acid and/or (meth)acrylic esters by introducing an oxygenous gas into the (meth)acrylic acid and/or the (meth)acrylic ester, in which the (meth)acrylic acid and/or the (meth)acrylic ester has a degree of purity of at least 95% and is in the liquid state.

公开(公告)号：ZA201303255B

公开(公告)日：2014-07-30

申请号：ZA201303255

申请日：2013-05-06

Applicant: BASF SE

Inventor： BLUM TILL ,  ZUROWSKI PETER ,  KORN TOBIAS JOHANNES ,  HAREMZA SYLKE ,  FRIESE THORSTEN ,  MARTIN FRIEDRICH-GEORG ,  JAGER ULRICH ,  RISSEL STEFFEN ,  SCHLIEPHAKE VOLKER

IPC: C07C20060101

Abstract: Inhibiting the unwanted radical polymerization of acrylic acid present in a liquid phase (P1), comprises adding at least one chemical compound of copper to the liquid phase (P1). The amount of acrylic acid is 10 wt.%. The liquid phase additionally contains propionic acid (at least 100 wt. parts per million, based on wt. of acrylic acid in the liquid phase) and glyoxal (at least 100 wt. parts per million, based on wt. of acrylic acid in the liquid phase). An independent claim is also included for the liquid phase (P1), comprising at least one chemical compound of copper.