公开(公告)号：US4668819A

公开(公告)日：1987-05-26

申请号：US755080

申请日：1985-07-15

Applicant: Hans Fernholz ,  Hans Krekeler ,  G/u/ nter Roscher ,  Hans-Joachim Schmidt ,  Heinz Schmitz ,  Friedrich Wunder

Inventor： Hans Fernholz ,  Hans Krekeler ,  G/u/ nter Roscher ,  Hans-Joachim Schmidt ,  Heinz Schmitz ,  Friedrich Wunder

IPC: C07C69/007 ,  B01J23/00 ,  B01J23/40 ,  B01J31/04 ,  C07B61/00 ,  C07C20060101 ,  C07C67/04 ,  C07C67/05 ,  C07C67/055 ,  C07C69/02 ,  C07C69/12 ,  C07C69/14 ,  C07C69/145 ,  C07C69/15 ,  C07C69/155 ,  C07C69/22

CPC classification number: B01J23/52 ,  C07C67/055

Abstract: Unsaturated esters of carboxylic acids are prepared by reacting olefines or cycloolefines with carboxylic acids and oxygen in the gaseous phase in the presence of a catalyst containing noble metal salts or noble metals of the VIII.sup.th group of the Periodic System and alcali metal salts and/or alcaline earth metal salts, as activators the content of noble metal being in the range of from 1.2 to 5% by weight and the proportion of the metal fraction of each individual activator to the noble metal content being in the range of from 0.5 to 1 to 3:1.

Abstract translation: 不饱和羧酸酯是通过在含有贵金属盐或贵金属的第八组的周期系统和碱金属盐和/或碱性的催化剂的存在下，将烯烃或环烯烃与羧酸和氧气反应制备的 作为活化剂，贵金属的含量为1.2〜5重量％，各活性剂的金属部分与贵金属含量的比例为0.5〜1比3，作为活化剂 ：1。

公开(公告)号：US4502993A

公开(公告)日：1985-03-05

申请号：US379781

申请日：1982-05-19

Applicant: Hermann Neu ,  G/u/ nter Roscher

Inventor： Hermann Neu ,  G/u/ nter Roscher

IPC: C07C57/03 ,  C07C51/00 ,  C07C51/09 ,  C07C67/00 ,  C11C1/04

CPC classification number: C07C51/09

Abstract: The invention relates to a process for the preparation of unsaturated aliphatic carboxylic acids by thermal cracking of the polymeric intermediate product ("polyester") which is formed in the catalytic reaction of aldehydes or ketones with ketene. The reaction mixture containing polyester is heated with water, and the polyester is then isolated and subjected to cracking. Or the polyester is first isolated and then heated with water and finally subjected to cracking. In both cases the temperature when the mixture is heated with water is the same as the boiling point, or is less than 40.degree. C. below the boiling point, of the aqueous mixture.

Abstract translation: 本发明涉及通过在醛或酮与乙烯酮的催化反应中形成的聚合物中间产物（“聚酯”）的热裂解制备不饱和脂族羧酸的方法。 将含有聚酯的反应混合物用水加热，然后分离聚酯并开裂。 或者首先将聚酯分离，然后用水加热，最后破裂。 在两种情况下，混合物用水加热时的温度与含水混合物的沸点相同或低于沸点40℃。