申请人:Kemin Industries, Inc.
公开号:US05591878A1
公开(公告)日:1997-01-07
A catalyzed process is disclosed for producing a polyvalent metal C.sub.2 -C.sub.3 carboxylate having the formula M(CH.sub.3 (CH.sub.2).sub.x COO.sup.--).sub.y, wherein M is the polyvalent metal cation that is manganese (Mn.sup.+2), cobalt (Co.sup.+2), or chromium (Cr.sup.+3), x is zero or 1 and y is an integer equal to the cationic charge of M. The polyvalent metal C.sub.2 -C.sub.3 carboxylate is prepared by admixing (i) a dry polyvalent metal compound that is an oxide, hydroxide or carbonate of Mn.sup.+2, Co.sup.+3 or Cr.sup.+3, (ii) an anhydrous C.sub.2 -C.sub.3 carboxylic acid, and (iii) a catalytic agent at a relative molar ratio of about 1:2-10:0.01-3 in the absence of an added solvent or other diluent to form a reaction mixture. The reaction mixture is heated to complete the reaction, remove the produced water and about 80 percent of the unreacted carboxylic acid. The product in residual carboxylic acid is solidified, ground and the product is recovered. The metal carboxylates can be used as biologically available and economical sources of trace metal ions for supplementation in animal diets.
本发明揭示了一种催化过程,用于生产具有公式M(CH.sub.3(CH.sub.2).sub.x COO.sup.-).sub.y的多价金属C.sub.2-C.sub.3羧酸盐,其中M是多价金属阳离子,包括锰(Mn.sup.+2),钴(Co.sup.+2)或铬(Cr.sup.+3),x为零或1,y为M的阳离子电荷相等的整数。通过混合(i)干的多价金属化合物,该化合物为Mn.sup.+2,Co.sup.+3或Cr.sup.+3的氧化物,氢氧化物或碳酸盐,(ii)无水的C.sub.2-C.sub.3羧酸和(iii)催化剂,以相对摩尔比约为1:2-10:0.01-3的条件下,在没有添加溶剂或其他稀释剂的情况下形成反应混合物。将反应混合物加热以完成反应,去除产生的水和约80%的未反应羧酸。残留羧酸中的产物固化,研磨并回收产物。金属羧酸盐可用作动物饲料中微量金属离子的生物有效和经济来源。