公开(公告)号：US09695121B2

公开(公告)日：2017-07-04

申请号：US14764010

申请日：2014-01-27

Applicant: BASF SE

Inventor： Stephanie Jaegli ,  Thomas Schmidt ,  Alfred Oftring ,  Alexander Panchenko ,  Kirsten Dahmen ,  Oliver Molt

IPC: C07D211/26 ,  C07D211/60

CPC classification number: C07D211/26 ,  C07D211/60

Abstract: The present invention relates to 2,6-bis(aminomethyl)piperidine derivatives as such (in the following text abbreviated to “2,6-BAMP derivatives”) which are defined by the general formula (I) shown in the following text. In addition, the present invention relates to a process for preparing such 2,6-BAMP derivatives by hydrogenation of the corresponding 2,6-dicyanopiperidine derivatives (hereinafter abbreviated to “2,6-DCP derivatives”) in the presence of a catalyst. The present invention further provides for the use of the 2,6-BAMP derivatives of the invention as hardeners for epoxy resins, as intermediate in the preparation of diisocyanates, which play an important role in the production of polyurethanes, as starters in the preparation of polyetherols and/or as monomers for polyamide production. The present invention further relates to the diisocyanates as such prepared from the 2,6-BAMP derivatives and also the corresponding preparative process.

公开(公告)号：US20140155646A1

公开(公告)日：2014-06-05

申请号：US14090285

申请日：2013-11-26

Applicant: BASF SE

Inventor： Frank Mrzena ,  Hans-Juergen Kinder ,  Michael Schoenherr ,  Gerhard Cox ,  Thomas Schmidt ,  Volker Huett

IPC: C07C229/24

CPC classification number: C07C229/24 ,  C07B2200/13 ,  C07C227/42 ,  C07C229/16

Abstract: A process is proposed for the preparation of a powder comprising one or more derivatives of glycine-N,N-diacetic acid and/or one or more derivatives of glutamine-N,N-diacetic acid with a degree of crystallinity of a ≧30%, starting from an aqueous solution comprising the one or more derivatives of glycine-N,N-diacetic acid and/or the one or more derivatives of glutamine-N,N-diacetic acid in a concentration range from 20 to 60% by weight, based on the total weight of the aqueous solution, where the aqueous solution is concentrated in a first process step in an evaporator with rotating internals, which are arranged at a distance relative to the inside wall of the evaporator of ≦1% of the diameter of the evaporator, to give a crystal slurry with a solids concentration in the range from 60 to 85% by weight, based on the total weight of the crystal slurry, and where in a second process step the crystal slurry is left to ripen in a paste bunker and then in a thin-film contact dryer, and where the residence time in the paste bunker and in the thin-film contact dryer is in total a ≧15 minutes.

Abstract translation: 提出一种制备包含一种或多种甘氨酸-N，N-二乙酸衍生物和/或一种或多种结晶度为≥30％的谷氨酰胺-N，N-二乙酸衍生物的粉末的方法， 从包含甘氨酸-N，N-二乙酸的一种或多种衍生物和/或浓度为20至60重量％的谷氨酰胺-N，N-二乙酸的一种或多种衍生物的水溶液开始， 基于水溶液的总重量，其中在具有旋转内部件的蒸发器中的第一工艺步骤中浓缩水溶液，所述蒸发器相对于蒸发器的内壁设置一定距离; 1％的直径 ，得到基于晶体浆料的总重量的固体浓度为60至85重量％的晶体浆料，并且在第二工艺步骤中，将晶体浆料在 然后在薄膜接触式干燥机中， 其中在糊状掩模和薄膜接触式干燥器中的停留时间总共为≥15分钟。