公开(公告)号：US09073826B2

公开(公告)日：2015-07-07

申请号：US13687156

申请日：2012-11-28

Applicant: BASF SE

Inventor： Klaus Ebel ,  Tobias Voitl ,  Andreas Keller ,  Stefan Rüdenauer ,  Karsten Bartling ,  Bjorn Langlotz ,  Jochen Steiner

IPC: C07C303/22 ,  C07C309/15 ,  C07C303/32 ,  C07C303/44

CPC classification number: C07C303/22 ,  C07C303/32 ,  C07C303/44 ,  C07C309/15

Abstract: A process for preparing salts of acrylamido-2-methylpropanesulfonic acid (A) using the steps of: preparing a solution of a contaminated salt of acrylamido-2-methyl-propanesulfonic acid (A) in an anhydrous organic solvent (L) using at least one basic component (B) selected from the group of alkali metal oxides, alkaline earth metal oxides, alkali metal hydroxides, alkaline earth metal hydroxides and amines of the formula (I) NRaRbRc  (I) where the Ra, Rb and Rc radicals are each independently: hydrogen, C1-C4-alkyl, hydroxy-C1-C4-alkyl or C1-C4-alkoxy, where the molar ratio of compound (A) to the basic component (B) is 1:1 to 1:3, recovering the dissolved salt of compound (A) by crystallization or by precipitation, by altering the temperature and/or the pressure and/or the concentration of the salt in the solution. This leads to salts which are low in by-products and are particularly suitable for polymerization.

Abstract translation: 一种使用以下步骤制备丙烯酰氨基-2-甲基丙磺酸（A）的盐的方法：使用至少在无水有机溶剂（L）中制备丙烯酰胺基-2-甲基 - 丙磺酸（A）的污染盐的溶液 选自碱金属氧化物，碱土金属氧化物，碱金属氢氧化物，碱土金属氢氧化物和式（I）NRaRbRc（I）的胺的一种碱性组分（B），其中R a，R b和R c基团各自为 独立地：氢，C1-C4-烷基，羟基-C1-C4-烷基或C1-C4-烷氧基，其中化合物（A）与碱性组分（B）的摩尔比为1:1至1:3，回收 化合物（A）的溶解盐通过结晶或沉淀，改变溶液中盐的温度和/或压力和/或浓度。 这导致副产物低的盐，特别适用于聚合。

公开(公告)号：US20130137893A1

公开(公告)日：2013-05-30

申请号：US13687156

申请日：2012-11-28

Applicant: BASF SE

Inventor： Klaus Ebel ,  Tobias Voitl ,  Andreas Keller ,  Stefan Rüdenauer ,  Karsten Bartling ,  Bjorn Langlotz ,  Jochen Steiner

IPC: C07C303/22 ,  C07C309/15

CPC classification number: C07C303/22 ,  C07C303/32 ,  C07C303/44 ,  C07C309/15

Abstract: A process for preparing salts of acrylamido-2-methylpropanesulfonic acid (A) using the steps of: preparing a solution of a contaminated salt of acrylamido-2-methyl-propanesulfonic acid (A) in an anhydrous organic solvent (L) using at least one basic component (B) selected from the group of alkali metal oxides, alkaline earth metal oxides, alkali metal hydroxides, alkaline earth metal hydroxides and amines of the formula (I) NRaRbRc  (I) where the Ra, Rb and Rc radicals are each independently: hydrogen, C1-C4-alkyl, hydroxy-C1-C4-alkyl or C1-C4-alkoxy, where the molar ratio of compound (A) to the basic component (B) is 1:1 to 1:3, recovering the dissolved salt of compound (A) by crystallization or by precipitation, by altering the temperature and/or the pressure and/or the concentration of the salt in the solution. This leads to salts which are low in by-products and are particularly suitable for polymerization.

Abstract translation: 一种使用以下步骤制备丙烯酰氨基-2-甲基丙磺酸（A）的盐的方法：使用至少在无水有机溶剂（L）中制备丙烯酰氨基-2-甲基 - 丙磺酸（A）的污染盐的溶液 选自碱金属氧化物，碱土金属氧化物，碱金属氢氧化物，碱土金属氢氧化物和式（I）NRaRbRc（I）的胺的一种碱性组分（B），其中R a，R b和R c基团各自为 独立地：氢，C1-C4-烷基，羟基-C1-C4-烷基或C1-C4-烷氧基，其中化合物（A）与碱性组分（B）的摩尔比为1:1至1:3，回收 化合物（A）的溶解盐通过结晶或沉淀，改变溶液中盐的温度和/或压力和/或浓度。 这导致副产物低的盐，特别适用于聚合。