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