The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2016
Filed:
Dec. 20, 2013
Ineos Paraform Gmbh & Co. KG, Mainz, DE;
Hans Hasse, Kaiserslautern, DE;
Jan-Oliver Drunsel, Kaiserslautern, DE;
Jakob Burger, Kaiserslautern, DE;
Ulrich Schmidt, Mainz, DE;
Mario Renner, Mainz, DE;
Sergej Blagov, Mainz, DE;
Ineos Paraform GmbH & Co. KG, , DE;
Abstract
The invention relates to a continuous process to make and isolate methylal by reacting formaldehyde and methanol with an acid catalyst under at least partial formation of methylal and water, to form a mixture Mcomprising formaldehyde, methanol, methylal, and water, separating the said mixture Min a distillation column B into three distinct product streams, one being a distillate taken from the column head BH which is rich in methylal, one taken from the column bottom stream BB being almost pure water, and one taken from the side of the column B below the reaction zone which stream is rich in methanol, characterised in that the ratio of the amount of substance of methanol to the amount of substance of formaldehyde in the mixture Mis at least 3 mol/mol, and to an apparatus to be used with this process.