Esters of trihydric alcohols and process for making them
Номер патента: GB1298870A
Опубликовано: 06-12-1972
Автор(ы): Carsten Grunow, Herman Glaser, Kurt Sennewald, Wilhelm Vogt
Принадлежит: Knapsack Ag
Опубликовано: 06-12-1972
Автор(ы): Carsten Grunow, Herman Glaser, Kurt Sennewald, Wilhelm Vogt
Принадлежит: Knapsack Ag
Реферат: 1298870 Esters KNAPSACK AG 30 Dec 1970 [5 Jan 1970] 61782/70 Heading C2C Esters of trihydric alcohols of formula where R 1 -R 5 represent H, CH 3 , C 2 H 5 , C 3 H 7 or aryl; R 6 and R 7 represent H, HCO, CH 3 CO, C 2 H 5 CO, C 3 H 7 CO or aroyl, except that when R 1 -R 4 represent. H and R 5 represents CH 3 R 6 and R 7 represent a group other than CH 3 CO, specifically the new compound 2-methyl-glycerol diacetate, are prepared by reacting a solution of alkenyl acylate in formic, acetic, propionic, butyric, isobutyric, or an aromatic carboxylic acid, in liquid phase, with an oxygen/inert gas mixture at between 80‹ and 250‹ C., and between 1 and 200 atmospheres absolute and in the absence of catalysts. Examples describe the preparation of 2-methylglycerol diacetate and 1 -methyl-glycerol diacetate and 1-methyl-glycerol diacetate and triacetate, and glycerol di- and tri-formate. The process may be batchwise or continuous with recycling and an apparatus comprising a reactor, condenser, and a distillation column is described for the continuous process.
Process for preparation of high-purity organic compounds
Номер патента: EP1284252A4. Автор: Masao Yamaguchi,Hiromasa Yamamoto,Hideki Kikuchi. Владелец: Tokuyama Corp. Дата публикации: 2005-06-15.