公开(公告)号：EP1658314A1

公开(公告)日：2006-05-24

申请号：EP04764341.6

申请日：2004-08-20

申请人： BASF Aktiengesellschaft

发明人： FRANK, Jürgen ,  RENZ, Günter ,  SCHUPP, Eberhard ,  STEINMETZ, Bernhard ,  MOLTER, Stefan ,  BAYER, Karl

IPC分类号： C08F4/40 ,  C08F20/00

CPC分类号： C08F4/40 ,  C08F2/32

摘要： The invention relates to a method for producing homopolymers or copolymers by the homopolymerization or copolymerization of radically polymerizable water-soluble and/or water-dispersible monomers, optionally with additional comonomers and optionally with at least one cross-linking agent, in an inverse emulsion polymerization in the presence of at least one redox initiator pair comprising an oxidant and a reductant, said reductant being 2-hydroxy-2-sulfinato acetic acid and/or the salt thereof. The invention also relates to: homopolymers or copolymers that can be produced according to said method; water-in-oil emulsions containing at least one inventive homopolymer or copolymer; solid compositions containing at least one inventive homopolymer or copolymer; the use of 2-hydroxy-2-sulfinato acetic acid and/or the salt thereof as a reductant in a method for producing homopolymers or copolymers; the use of the water-in-oil emulsion containing at least one inventive homopolymer or copolymer for thickening aqueous solutions; and the use of 2-hydroxy-2-sulfinato acetic acid and/or the salt thereof as a reduction component in a redox initiator pair comprising an oxidant and a reductant, to avoid induction periods in the inverse emulsion polymerization.

公开(公告)号：EP0912544A1

公开(公告)日：1999-05-06

申请号：EP96927534.0

申请日：1996-07-09

申请人： BASF AKTIENGESELLSCHAFT

发明人： FRANK, Jürgen ,  MELDER, Johann-Peter ,  MERGER, Franz ,  WITZEL, Tom

IPC分类号： C07D319

CPC分类号： C07D319/06 ,  C07D319/08 ,  Y02P20/584

摘要： The invention concerns a process for preparing 2-substituted but-2-ene-1,4-dial-acetals of general formula (I) in which the substituents R1 to R4 stand for hydrogen or C¿1?-C6 aliphatic groups and R?2 and R3 or R1 and R2¿ in each case are common members of an aliphatic 4- to 7-member ring which can contain a heteroatom, and in which R5 designates a C¿1?-C12 alkyl, alkenyl or alkinyl group, which can be substituted by cycloaliphatic, aromatic or heterocyclic groups or by hydroxy, ether, thioether, acyl, alkylamino, carboxy or carbalkoxy groups, an optionally substituted aryl group or an alkoxy, alkylthio or acyloxy group. According to the invention: a) glyoxal is reacted with a 1,3-propane diol of general formula (II) in an aqueous solution in the presence of an acid to form a monoacetal of general formula (III), the reaction solution is neutralized and optionally the volatile components which are lighter than the monoacetal (III) are distilled off; b) the resultant monoacetal (III) is reacted with an aldehyde R?5¿-CHO in the presence of between 0.01 and 10 mol %, relative to glyoxal, of a catalyst mixture consisting of a secondary amine and an acid to form an aldol of general formula (IV), and optionally the volatile components which are lighter than the aldol (IV) are distilled off; and c) the aldol (IV) is dehydrogenated in the presence of a dehydrating agent to form product (I). The invention also concerns novel hemiacetals of glyoxalmonoacetals.

公开(公告)号：EP1658314B1

公开(公告)日：2007-09-12

申请号：EP04764341.6

申请日：2004-08-20

申请人： BASF Aktiengesellschaft

发明人： FRANK, Jürgen ,  RENZ, Günter ,  SCHUPP, Eberhard ,  STEINMETZ, Bernhard ,  MOLTER, Stefan ,  BAYER, Karl

IPC分类号： C08F4/40 ,  C08F20/00

CPC分类号： C08F4/40 ,  C08F2/32

摘要： The invention relates to a method for producing homopolymers or copolymers by the homopolymerization or copolymerization of radically polymerizable water-soluble and/or water-dispersible monomers, optionally with additional comonomers and optionally with at least one cross-linking agent, in an inverse emulsion polymerization in the presence of at least one redox initiator pair comprising an oxidant and a reductant, said reductant being 2-hydroxy-2-sulfinato acetic acid and/or the salt thereof. The invention also relates to: homopolymers or copolymers that can be produced according to said method; water-in-oil emulsions containing at least one inventive homopolymer or copolymer; solid compositions containing at least one inventive homopolymer or copolymer; the use of 2-hydroxy-2-sulfinato acetic acid and/or the salt thereof as a reductant in a method for producing homopolymers or copolymers; the use of the water-in-oil emulsion containing at least one inventive homopolymer or copolymer for thickening aqueous solutions; and the use of 2-hydroxy-2-sulfinato acetic acid and/or the salt thereof as a reduction component in a redox initiator pair comprising an oxidant and a reductant, to avoid induction periods in the inverse emulsion polymerization.

公开(公告)号：EP0912544B1

公开(公告)日：2004-10-06

申请号：EP96927534.6

申请日：1996-07-09

申请人： BASF AKTIENGESELLSCHAFT

发明人： FRANK, Jürgen ,  MELDER, Johann-Peter ,  MERGER, Franz ,  WITZEL, Tom

IPC分类号： C07D319/06 ,  C07D319/08

CPC分类号： C07D319/06 ,  C07D319/08 ,  Y02P20/584

摘要： The invention concerns a process for preparing 2-substituted but-2-ene-1,4-dial-acetals of general formula (I) in which the substituents R to R stand for hydrogen or C1-C6 aliphatic groups and R and R or R and R in each case are common members of an aliphatic 4- to 7-member ring which can contain a heteroatom, and in which R designates a C1-C12 alkyl, alkenyl or alkinyl group, which can be substituted by cycloaliphatic, aromatic or heterocyclic groups or by hydroxy, ether, thioether, acyl, alkylamino, carboxy or carbalkoxy groups, an optionally substituted aryl group or an alkoxy, alkylthio or acyloxy group. According to the invention: a) glyoxal is reacted with a 1,3-propane diol of general formula (II) in an aqueous solution in the presence of an acid to form a monoacetal of general formula (III), the reaction solution is neutralized and optionally the volatile components which are lighter than the monoacetal (III) are distilled off; b) the resultant monoacetal (III) is reacted with an aldehyde R -CHO in the presence of between 0.01 and 10 mol %, relative to glyoxal, of a catalyst mixture consisting of a secondary amine and an acid to form an aldol of general formula (IV), and optionally the volatile components which are lighter than the aldol (IV) are distilled off; and c) the aldol (IV) is dehydrogenated in the presence of a dehydrating agent to form product (I). The invention also concerns novel hemiacetals of glyoxalmonoacetals.