公开(公告)号：AU2171001A

公开(公告)日：2001-07-09

申请号：AU2171001

申请日：2000-12-21

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SCHULZ GERHARD

IPC: C07B61/00 ,  C07C29/80 ,  C07C31/22 ,  C07C29/141

Abstract: A process is disclosed for the purification, by distillation, of trimethylolpropane originating from the hydrogenation of 2,2-dimethylolbutanal, said process including the following steps:(a) reaction of n-butyraldehyde with formaldehyde in the presence of catalytic amounts of a tertiary amine, and hydrogenation of the resulting mixture to give a mixture containing trimethylolpropane;(b) separation of water, methanol, trialkylamine and/or trialkylammonium formate by distillation;(c) heating of the residue obtained in (b) under reduced pressure to a temperature at which TMP is volatile and compounds boiling above TMP are cleaved, in order to separate off, by distillation, TMP and compounds more volatile than TMP;(d) distillation of the distillate obtained in (c) in order to separate off the more volatile compounds and recover pure TMP; and(e) optional distillation of the TMP obtained in (d) in order to recover TMP with a low APHA color index.A process is also disclosed in which trialkylammonium formate is distilled under mild conditions from crude mixtures of polyhydric alcohols, predominantly trimethylolpropane.

公开(公告)号：DE19963435A1

公开(公告)日：2001-07-05

申请号：DE19963435

申请日：1999-12-28

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SCHULZ GERHARD

IPC: C07B61/00 ,  C07C29/80 ,  C07C31/22

Abstract: The invention relates to a method for carrying out the pure distillation of trimethylolpropane originating from the hydrogenation of 2,2-dimethylolbutanal with the following steps: (a) reacting n-butyraldehyde with formaldehyde in the presence of catalytic quantities of a tertiary amine and hydrogenating the mixture that is obtained in such a manner in order to form a mixture containing trimethylolpropane; (b) separating water, methanol, trialkylamine and/or trialkylammonium formate by distillation; (c) heating the remainder obtained in (b), under a vacuum, to a temperature at which TMP is volatile and at which compounds that boil at temperatures greater than that of TMP are cleaved while separating by distillation TMP as well as compounds that are less volatile than TMP; (d) distilling the distillate obtained in (c) while separating out the less volatile compounds and obtaining pure TMP; (e) carrying out the facultative distillation of the TMP obtained in (d) in order to obtain TMP that has a low alpha color index. The invention also relates to a method in which trialkylammonium formate is separated by distillation, while preserving the same, from raw mixtures consisting of polyvalent alcohols, mainly of trimethylolpropane.

公开(公告)号：CZ20003758A3

公开(公告)日：2001-04-11

申请号：CZ20003758

申请日：1999-03-30

Applicant: BASF AG ,  BASF CORP

Inventor： KOBER REINER ,  HOBBS DAVID ,  GIBSON SCOTT W ,  FERSCH KENNETH EUGENE ,  RADEMACHER WILHELM ,  BOTZEM JOERG ,  FREDE MARKUS ,  DERNBACH MATTHIAS ,  GOETTSCHE REIMER ,  DOETZER REINHARD

IPC: C07D295/02 ,  A01N33/12 ,  A01N43/40 ,  A01N59/14 ,  C01B35/12 ,  C07D295/037

Abstract: The invention provides novel mepiquat plant growth regulator compositions which have improved hygroscopicity and corrosion characteristics. The novel mepiquat plant growth regulator compositions of the invention can be readily prepared from technical mepiquat chlorid inter alia by electrochemical ion exchange processes or by quaternization of N-methylpiperidine with dimethylcarbonate as starting material.

公开(公告)号：DE19907648A1

公开(公告)日：2000-08-24

申请号：DE19907648

申请日：1999-02-23

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  DITTLINGER WOLFGANG ,  SCHOENFELDER HENDRIK ,  HENNINGSEN MICHAEL ,  PFEFFINGER JOACHIM

IPC: C07C263/04 ,  C07C265/14