公开(公告)号：US20130289305A1

公开(公告)日：2013-10-31

申请号：US13933732

申请日：2013-07-02

Applicant: BASF SE

Inventor： Stefanie HERZOG ,  Stefan ALTWASSER ,  Markus OTTENBACHER ,  Frank HUETTEN ,  Annebart Engbert WENTINK ,  Alexander SCHAEFER

IPC: C07C57/04

CPC classification number: C07C57/04 ,  C07B2200/05 ,  C07C51/235 ,  C07C51/353 ,  C07C53/08

Abstract: A process for preparing acrylic acid from ethanol and formaldehyde, in which, in a reaction zone A, the ethanol is partially oxidized to acetic acid in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and a formaldehyde source are used to obtain a reaction gas input mixture B which comprises acetic acid and formaldehyde and has the acetic acid in excess over the formaldehyde, and the formaldehyde present in reaction gas input mixture B is aldol-condensed with acetic acid present in reaction gas input mixture B to acrylic acid under heterogeneous catalysis in a reaction zone B, and unconverted acetic acid still present along-side the acrylic acid target product in the product gas mixture B obtained is removed therefrom, and the acetic acid removed is recycled into the production of reaction gas input mixture B.

Abstract translation: 一种从乙醇和甲醛制备丙烯酸的方法，其中在反应区A中乙醇在非均相催化气相反应中部分氧化成乙酸，得到的产物气体混合物A和甲醛源用于获得 反应气体输入混合物B，其包含乙酸和甲醛，并且乙酸超过甲醛，反应气体输入混合物B中存在的甲醛与反应气体输入混合物B中存在的乙酸醛醛缩合成丙烯酸 在反应区B中的非均相催化下，从得到的产物气体混合物B中沿着丙烯酸目标产物仍然存在未转化的乙酸，除去乙酸，再循环到反应气体输入混合物B 。

公开(公告)号：US20150344621A1

公开(公告)日：2015-12-03

申请号：US14822921

申请日：2015-08-11

Applicant: BASF SE

Inventor： Frank HUETTEN ,  Otto MACHHAMMER ,  Thomas DANIEL ,  Markus OTTENBACHER ,  Daniel PFEIFFER ,  Stefanie HERZOG ,  Manfred HEILIG ,  Klaus Joachim MUELLER-ENGEL

IPC: C08G63/81

CPC classification number: C08G63/81 ,  C07C51/252 ,  C07C51/42 ,  C07C51/47 ,  C07C57/04 ,  Y02P20/582

Abstract: An aqueous solution comprising acrylic acid and the conjugate base thereof in a total amount of at least 10% by weight, based on the weight of the aqueous solution, and propionic acid and the conjugate base thereof, formic acid and the conjugate base thereof, acetic acid and the conjugate base thereof, benzoic acid and the conjugate base thereof, maleic anhydride, maleic acid and the conjugate bases thereof, phthalic anhydride, phthalic acid and the conjugate bases thereof, acrolein, benzaldehyde, 2-furaldehyde, and at least 20 mol % of at least one alkali metal cation; process for preparing this solution; and the use of this solution for preparation of polymer by free-radical polymerization.

Abstract translation: 包含丙烯酸及其共轭碱的水溶液的总量为至少10重量％，基于水溶液的重量，丙酸及其共轭碱，甲酸及其共轭碱，乙酸 酸及其共轭碱，苯甲酸及其共轭碱，马来酸酐，马来酸及其共轭碱，邻苯二甲酸酐，邻苯二甲酸及其共轭碱，丙烯醛，苯甲醛，2-糠醛，和至少20摩尔 ％的至少一种碱金属阳离子; 制备该溶液的方法; 以及使用该溶液通过自由基聚合制备聚合物。