公开(公告)号：US11518749B2

公开(公告)日：2022-12-06

申请号：US16971650

申请日：2019-02-11

Applicant: BASF SE

Inventor： Oliver Bussmann ,  Eva Koch ,  Manfred Heilig ,  Joachim Pfeffinger ,  Joerg Pastre ,  Johann-Peter Melder

IPC: C07C217/08 ,  C07C41/42 ,  C07C213/02 ,  C07C213/10 ,  C07D295/03 ,  C07D295/023

Abstract: A process for the continuous distillative separation of mixtures comprising morpholine (MO), monoaminodiglycol (ADG), ammonia, water and methoxyethanol (MOE), obtained by reacting diethylene glycol (DEG) with ammonia, wherein ammonia, water, ADG and DEG are removed by distillation and the resulting stream comprising MO and MOE is supplied to a distillation column K40 in which at a top pressure of from 20 to 2000 mbar MO, MOE and organic products having a boiling point 128° C. (1.013 bar) are removed via the bottom and organic products having a boiling point 128° C. are removed overhead, and also MO is removed via a side draw, where K40 is equipped with an evaporator for heating the bottoms, into which is fed heating vapor having a pressure of from 1 to 10 bar.

公开(公告)号：US11591543B2

公开(公告)日：2023-02-28

申请号：US16753413

申请日：2018-10-05

Applicant: BASF SE

Inventor： Nicolas Marion ,  Rolf Pinkos ,  Stefan Ruedenauer ,  Florian Garlichs ,  Ralf Pelzer ,  Roman Dostalek ,  Joachim Pfeffinger ,  Anja Vinckier ,  Stephanie Renz ,  Christoph Stock ,  Regina-Margareta Berg ,  Miriam Bru Roig ,  Margarethe Klos

IPC: C11B9/00 ,  C07D309/04

Abstract: The present invention relates to aroma chemical compositions containing 3,5-diethyl-2-propyl-tetrahydropyran, a 3,5-diethyl-2-propyl-dihydropyran or a 3,5-diethyl-2-propyl-pyran, a mixture of such compounds, a stereoisomer of one of these compounds, or a mixture of stereoisomers of one or more of these compounds. The invention further relates to a method for preparing such compounds, stereoisomers or mixtures thereof, to the composition obtainable by this method, to the use of such compounds as an aroma chemical or for modifying the scent character of a fragranced composition; and to a method for preparing a fragranced composition or for modifying the scent character of a fragranced composition using said compounds. Moreover, the invention relates to 3,5-diethyl-2-propyl-tetrahydropyran, to its stereoisomers and to mixtures of these stereoisomers.

公开(公告)号：US11214555B2

公开(公告)日：2022-01-04

申请号：US16971660

申请日：2019-02-11

Applicant: BASF SE

Inventor： Eva Koch ,  Oliver Bussmann ,  Joachim Pfeffinger ,  Joerg Pastre ,  Johann-Peter Melder

IPC: C07D295/023 ,  C07D295/027 ,  C07C41/42

Abstract: A process for the depletion of 2-methoxyethanol (MOE) from a mixture comprising predominantly morpholine (MO) (crude morpholine), wherein crude morpholine is distilled in a distillation column in the presence of an alkali metal compound of the general formula M+[RO−] (M+ is alkali metal cation and R is hydrogen (H), methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, sec-butyl or tert-butyl), where MO and a compound of the general formula R—OH are distilled off and an alkali metal methoxyethoxide of the general formula M+[MeOEtO−] is obtained in the bottom of the column.