公开(公告)号：US20040158094A1

公开(公告)日：2004-08-12

申请号：US10769911

申请日：2004-02-03

Applicant: BASF Aktiengesellschaft

Inventor： Ruprecht Kroker ,  Gerhard Nestler ,  Werner Schmitt ,  Winfried Schumm

IPC: B01J010/00

CPC classification number: C07C67/04 ,  Y02P20/582 ,  C07C69/14 ,  C07C69/54

Abstract: The tert-butyl ester of an aliphatic C1-C4-carboxylic acid is prepared by reacting the carboxylic acid with isobutene in the liquid phase in the presence of an acidic catalyst by a continuous process in which the reaction is carried out in a reactor divided into a plurality of sections, the carboxylic acid, the isoolefin and the catalyst are fed into the first section of the reactor, the reaction mixture obtained is removed from the last section of the reactor and the ester is isolated therefrom, the reaction temperature in the reactor being controlled so that it is from 10 to 40null C. and is highest in the first section of the reactor. The novel process permits the technically simple, economical and environmentally friendly preparation of tertiary butyl esters of saturated and unsaturated C1-C4-carboxylic acids.

Abstract translation: 脂肪族C 1 -C 4 - 羧酸的叔丁基酯是通过在酸性催化剂存在下在液相中使羧酸与异丁烯反应来制备的，其中连续方法是反应分解成 多个部分，羧酸，异烯烃和催化剂进料到反应器的第一部分中，从反应器的最后部分除去所获得的反应混合物，从其中分离出酯，反应器中的反应温度 被控制为使其为10至40℃，并且在反应器的第一部分中最高。 该新方法允许在技术上简单，经济和环境友好地制备饱和和不饱和C1-C4-羧酸的叔丁基酯。

公开(公告)号：US20020165410A1

公开(公告)日：2002-11-07

申请号：US09845268

申请日：2001-05-01

Applicant: BASF Aktiengesellschaft

Inventor： Heinrich Aichinger ,  Gerhard Nestler ,  Paul Leon Kageler

IPC: B61D045/00 ,  C07C057/18

CPC classification number: C07C51/43 ,  C07C51/50 ,  C07C57/04

Abstract: A method of transporting and/or storing pure acrylic acid comprises ensuring by means of appropriate measures that the pure acrylic acid is partly crystalline during the entire duration of transport and/or storage.

Abstract translation: 运输和/或储存纯丙烯酸的方法包括通过适当的措施确保纯丙烯酸在运输和/或储存的整个持续期间是部分结晶的。