公开(公告)号：JP2013147501A

公开(公告)日：2013-08-01

申请号：JP2013048295

申请日：2013-03-11

Applicant: Basf Se ,  ビーエーエスエフ ソシエタス・ヨーロピアBasf Se

Inventor： LIPOWSKY GUNTER ,  WULFF-DAERING JOACHIM DR ,  ZUROWSKI PETER ,  STRASSER JUERGEN

IPC: C07C67/04 ,  C07C69/54 ,  C07D211/94

CPC classification number: C07C67/54 ,  C07C67/04 ,  C07C67/62 ,  C07C69/54

Abstract: PROBLEM TO BE SOLVED: To provide a novel process for producing a tertiary alkyl ester of (meth)acrylic acid having at least four carbon atoms in the alkyl group without any drawbacks of prior art.SOLUTION: In a process for producing a tertiary alkyl ester of (meth)acrylic acid having at least four carbon atoms in the alkyl group which comprises (1) a step of reacting (meth)acrylic acid with at least one olefin of formula I in a homogeneous phase in the presence of an acidic catalyst, (2) a step of discharging the obtained reaction mixture (1) from a reactor, (3) a step of separating the discharged reaction mixture (2) into a mixture (3.1) containing the catalyst and a mixture (3.2) containing a target ester, and (4) a step of separating the target ester from the mixture (3.2), (5) at least one compound S having at least one N-oxyl group is added as a stabilizer in the treatment step (4).

Abstract translation: 要解决的问题：提供一种制备烷基中具有至少四个碳原子的（甲基）丙烯酸叔烷基酯的新方法，而没有现有技术的任何缺点。在制备叔烷基酯的方法中 的（甲基）丙烯酸烷基中具有至少四个碳原子的（甲基）丙烯酸，其包括（1）在酸性催化剂存在下，使（甲基）丙烯酸与至少一种式I的烯烃在均相中反应的步骤， （2）从反应器中排出所得反应混合物（1）的步骤，（3）将排出的反应混合物（2）分离成含有催化剂的混合物（3.1）和含有目标物的混合物（3.2） 酯，和（4）从混合物（3.2）中分离目标酯的步骤，（5）在处理步骤（4）中加入至少一种具有至少一个N-氧基的化合物S作为稳定剂。

公开(公告)号：JP2009024010A

公开(公告)日：2009-02-05

申请号：JP2008184847

申请日：2008-07-16

Applicant: Basf Se ,  ビーエーエスエフ ソシエタス・ヨーロピアBasf Se

Inventor： LIPOWSKY GUNTER ,  WULFF-DAERING JOACHIM DR ,  ZUROWSKI PETER ,  STRASSER JUERGEN

IPC: C07C67/04 ,  C07B61/00 ,  C07C67/54 ,  C07C67/62 ,  C07C69/54

CPC classification number: C07C67/54 ,  C07C67/04 ,  C07C67/62 ,  C07C69/54

Abstract: PROBLEM TO BE SOLVED: To provide a novel preparation method of a tertiary alkyl ester of (meth)acrylic acid with at least 4 carbon atoms in an alkyl group, provided that the method is free of disadvantages associated with conventional technology.
SOLUTION: The method for preparing the tertiary alkyl ester of (meth)acrylic acid with at least 4 carbon atoms in the alkyl group comprises the steps of: (1) reacting (meth)acrylic acid with at least one olefin of formula I in a homogeneous phase in the presence of an acidic catalyst in a reactor; (2) discharging the obtained reaction mixture (1) from the reactor; (3) separating the discharged reaction mixture (2) into a mixture (3.1) containing the catalyst and a mixture (3.2) containing the target ester and; (4) removing the target ester from the mixture (3.2). (5) In the treatment step (4), at least one compound S containing at least one N-oxyl group is added as a stabilizer.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种烷基中具有至少4个碳原子的（甲基）丙烯酸叔烷基酯的新型制备方法，条件是该方法不含与常规技术相关的缺点。 解决方案：烷基中具有至少4个碳原子的（甲基）丙烯酸叔烷基酯的制备方法包括以下步骤：（1）使（甲基）丙烯酸与至少一种式 I在反应器中在酸性催化剂存在下处于均相; （2）将得到的反应混合物（1）从反应器中排出; （3）将排出的反应混合物（2）分离成含有催化剂的混合物（3.1）和含有目标酯的混合物（3.2）; （4）从混合物（3.2）中除去目标酯。 （5）在处理步骤（4）中，加入至少一种含有至少一个N-氧基的化合物S作为稳定剂。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：DE102008002923A1

公开(公告)日：2009-01-22

申请号：DE102008002923

申请日：2008-07-01

Applicant: BASF SE

Inventor： LIPOWSKY GUNTER ,  WULFF-DOERING JOACHIM ,  ZUROWSKI PETER ,  STRASSER JUERGEN

IPC: C07C67/04 ,  B01D3/00 ,  C07C69/54 ,  C07D295/24

Abstract: Tertiary alkyl ester production involves reacting methacrylic acid with an olefin in homogeneous phase in presence of an acidic catalyst in a reactor. Resulting reaction mixture is discharged from the reactor. The discharged reaction mixture is separated into a mixture, which contains catalyst and a mixture containing tertiary alkyl ester of methacrylic acid having 4 carbon atoms in alkyl residue. The tertiary alkyl ester of methacrylic acid is removed from the mixture, and a compound, which contains N-oxyl group is added as stabilizer. The olefin has general formula (I). R 1>,R 2>alkyl residue; and R 3>H, alkyl residue, cycloalkyl residue, aryl residue, alkylcycloalkyl residue, which is bonded to the olefinically unsaturated carbon atom via an aliphatic or cycloaliphatic carbon atom, alkylaryl residue, which is bonded to the olefinically unsaturated carbon atom via an aliphatic or aromatic carbon atom, cycloalkylaryl residue, which is bonded to the olefinically unsaturated carbon atom via a cycloaliphatic or aromatic carbon atom or alkylcycloalkylaryl residue, which is bonded to the olefinically unsaturated carbon atom via an aliphatic, cycloaliphatic or aromatic carbon atom. [Image].