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℃。

公开(公告)号：US4353783A

公开(公告)日：1982-10-12

申请号：US201752

申请日：1980-10-29

Applicant: Gunter Roscher ,  Karl-Heinz Schmidt ,  Horst Langner ,  Hermann Neu ,  Aladar Lienerth ,  Dominik Dempf ,  Klaus Kaiser

Inventor： Gunter Roscher ,  Karl-Heinz Schmidt ,  Horst Langner ,  Hermann Neu ,  Aladar Lienerth ,  Dominik Dempf ,  Klaus Kaiser

IPC: C07C67/055 ,  C07C67/54 ,  C07C69/15 ,  B01D3/36

CPC classification number: C07C67/055 ,  C07C67/54 ,  B01J2219/1942

Abstract: Process for separating water from a gas mixture, obtained in the manufacture of vinyl acetate by reacting ethylene with acetic acid and oxygen in contact with catalysts containing palladium or palladium compounds in the gaseous phase said gas mixture consisting essentially of acetic acid, vinyl acetate, water, carbon dioxide and ethylene, wherein(a) the gas mixture leaving the reaction zone is condensed to give a condensate containing the major portion of acetic acid, vinyl acetate and water and(b) an acetic acid solution containing the residual amount of vinyl acetate and water being prepared by absorption of the non-condensed gas in acetic acid, is characterized in that(c) the condensate obtained in step (a) and the solution obtained in step (b) are introduced separately from each other into the same distillation column, the feeding point of the condensate being above the feeding point of the solution, the water is distilled off at the head of said column as azeotrope together with the vinyl acetate and(d) the water phase is removed from the distillate separating into a water phase and a vinyl acetate phase.

Abstract translation: 从气相混合物中分离水的方法，所述气体混合物是通过使乙烯与乙酸和氧气在气相中与含有钯或钯化合物的催化剂接触而在乙酸乙烯酯的制备中获得的，所述气体混合物主要由乙酸，乙酸乙烯酯，水 ，二氧化碳和乙烯，其中（a）离开反应区的气体混合物被冷凝，得到含有主要部分的乙酸，乙酸乙烯酯和水的冷凝物和（b）含有残留量的乙酸乙烯酯的乙酸溶液 和通过在乙酸中吸收非冷凝气体制备的水，其特征在于（c）将步骤（a）中获得的冷凝物和步骤（b）中获得的溶液彼此分开引入相同的蒸馏 柱，冷凝水的进料点高于溶液的进料点，水在所述塔的头部被蒸馏出来，作为共沸物一起 h乙酸乙烯酯和（d）从分离成水相和乙酸乙烯酯相的馏出物中除去水相。

公开(公告)号：US3642885A

公开(公告)日：1972-02-15

申请号：US3642885D

申请日：1970-03-30

Applicant: HOECHST AG ,  HORNIG ANNELIESE ,  HERMANN NEU ,  OTTO PROBST

Inventor： HORNIG LOTHAR HEINZ

IPC: B01D7/00 ,  C07C51/353 ,  C07C51/00

CPC classification number: B01D7/00 ,  C07C51/353 ,  C07C57/10

Abstract: THE USE OF SULFUR OR HYDROGEN CHLORIDE AS A CATALYST IN THE ISOMERIZATION OF CIS-CIS AND CIS-TRANS HEXADIENE (2:4) ACIDS TO YELD SORBIC ACID.

公开(公告)号：US3934045A

公开(公告)日：1976-01-20

申请号：US483677

申请日：1974-06-27

Applicant: Hans Fernholz ,  Hermann Neu

Inventor： Hans Fernholz ,  Hermann Neu

IPC: A21D2/00 ,  A21D2/14 ,  A21D15/00

CPC classification number: A21D2/145

Abstract: Process for preserving bread and bakery products with sorbic acid by adding to the dough before baking a coarsely crystalline sorbic acid.

Abstract translation: 通过在烘焙粗结晶山梨酸之前向面团中加入来保存面包和焙烤产品与山梨酸的方法。