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Machine translation
1. (WO1981000408) METHOD OF OBTAINING ALKYL DIOXANES-1,3
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/000408    International Application No.:    PCT/SU1979/000061
Publication Date: 19.02.1981 International Filing Date: 31.07.1979
IPC:
C07D 319/06 (2006.01)
Applicants:
Inventors:
Priority Data:
SU79/00061 31.07.1979 WO
Title (EN) METHOD OF OBTAINING ALKYL DIOXANES-1,3
(FR) METHODE D"OBTENTION D"ALKYLDIOXANES-1,3
Abstract: front page image
(EN)The method consists in making olefines with an aqueous solution of formaldehyde at an increased temperature and under an increased pressure in the presence of an acidic catalyst, separating the reaction mixture into aqueous and organic phases, recycling the aqueous phase of the reaction mixture and subsequently extracting the desired product, provided that, in the course of recycling, the aqueous phase before its return to the reaction zone is mixed with concentrated liquid formaldehyde and then is fed for reaction with the olefines. The reaction between formaldehyde and the olefines is carried out at a mole ratio of initial reagents exceeding the stoichiometric proportion.
(FR)La methode consiste a faire reagir des olefines avec une solution aqueuse de formaldehyde a une temperature elevee et sous une pression elevee en presence d"un catalyseur acide, a separer le melange reactionnel en une phase aqueuse et une phase organique, a recycler la phase aqueuse du melange reactionnel puis a extraire le produit desire, a condition que, en cours de recyclage, la phase aqueuse, avant qu"elle ne retourne a la zone de reaction, soit melangee avec du formaldehyde liquide concentre puis soit amenee en reaction avec les olefines. La reaction du formaldehyde et des olefines s"effectue avec un rapport molaire des agents de reaction initiaux superieur aux proportions stoechiometriques.
Designated States:
Publication Language: Russian (RU)
Filing Language: Russian (RU)