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    METHOD FOR PRODUCING TERTIARY C>4<-C>8<-ALKYL ESTERS OF (METH)ACRYL ACID AND A FALLING FILM EVAPORATOR INVOLVED THEREIN
    1.
    发明申请
    METHOD FOR PRODUCING TERTIARY C>4<-C>8<-ALKYL ESTERS OF (METH)ACRYL ACID AND A FALLING FILM EVAPORATOR INVOLVED THEREIN 审中-公开
    用于生产（甲基）丙烯酸及其相关CASE膜蒸发器TERT C4-C8烷基酯

    公开(公告)号：WO0210110A3

    公开(公告)日：2002-09-19

    申请号：PCT/EP0108713

    申请日：2001-07-27

    Applicant: BASF AG ,  KROKER RUPRECHT ,  NESTLER GERHARD ,  SCHMITT WERNER ,  SCHUMM WINFRIED

    Inventor： KROKER RUPRECHT ,  NESTLER GERHARD ,  SCHMITT WERNER ,  SCHUMM WINFRIED

    IPC: B01D3/14 ,  B01D1/06 ,  B01D5/00 ,  C07B61/00 ,  C07C67/04 ,  C07C67/54 ,  C07C69/54 ,  B01D1/22

    CPC classification number: C07C67/04 ,  B01D1/065 ,  C07C67/54 ,  Y10S203/09 ,  C07C69/54

    Abstract: The invention relates to a method for producing a tertiary C>4 8 and R , which can be identical or different, represent methyl or ethyl and R represents H, methyl or ethyl, in a homogeneous phase in the presence of an acidic catalyst and extracting the tertiary C4-C8 alkyl(meth)acrylate from the reaction mixture. According to the invention, the catalyst is separated as a residue in a two-stage distillation of the reaction mixture and the tertiary C4-C8 alkyl(meth)acrylate is extracted from the distillation. The inventive method permits the use of (meth)acryl acid that contains acetic acid. The risk of a breakdown of the ester and the polymerization of the (meth)acryl compounds is reduced. The invention also relates to a falling film evaporator comprising a cylindrical casing (2), a plurality of evaporation tubes (3) located in said casing (2), means (4) for supplying the liquid to be evaporated and means (5) for heating the evaporation tubes (3). Said evaporator is characterised in that at least one evaporation tube (3) has a closed head region (6), into which a supply line (7) for the liquid to be evaporated opens, said supply line (7) communicating with the means (4) for supplying the liquid to be evaporated.

    Abstract translation: 本发明涉及一种通过（甲基）丙烯酸与式（I）的烯烃反应来制备叔C4-C8烷基（甲基）丙烯酸酯，其中R <1>和R <2>，其等于 可以是或不同，代表甲基或乙基，R <3>为H，甲基或乙基，在叔C4-C8烷基（甲基）从反应混合物中丙烯酸酯的酸催化剂和回收的存在下均相， 通过由反应混合物作为残余物，并从馏出物胜叔C4-C8烷基（甲基）丙烯酸的两阶段蒸馏分离催化剂。 本发明的方法允许，可以使用含乙酸（甲基）丙烯酸。 酯和（甲基）丙烯酸系化合物的聚合的裂解的风险被降低。 此外，在罩（2）包括圆柱形外套（2），各种的降膜蒸发器布置蒸发管（3）的装置（4），用于将液体供给至被汽化，以及装置（5），用于加热所述蒸发管（3），其特征在于 ，（6），至少一个蒸发管（3）具有一个封闭的头部具有在（7）的液体打开一个进料管线将被蒸发，所述供给管线（7）的装置（4）中的液体的供给连通而蒸发。

    6.
    发明专利
    未知

    公开(公告)号：DE10036958A1

    公开(公告)日：2002-02-07

    申请号：DE10036958

    申请日：2000-07-28

    Applicant: BASF AG

    Inventor： KROKER RUPRECHT ,  NESTLER GERHARD ,  SCHMITT WERNER ,  SCHUMM WINFRIED

    IPC: B01D1/06 ,  B01D1/22 ,  B01D5/00 ,  C07B61/00 ,  B01D3/14 ,  C07C67/04 ,  C07C67/54 ,  C07C69/54 ,  B01D3/00 ,  B01D1/00

    Abstract: The invention relates to a method for producing a tertiary C4-C8 alkyl (meth)acrylate by reacting (meth)acryl acid with an olefin of formula (I), wherein R and R , which can be identical or different, represent methyl or ethyl and R represents H, methyl or ethyl, in a homogeneous phase in the presence of an acidic catalyst and extracting the tertiary C4-C8 alkyl(meth)acrylate from the reaction mixture. According to the invention, the catalyst is separated as a residue in a two-stage distillation of the reaction mixture and the tertiary C4-C8 alkyl(meth)acrylate is extracted from the distillation. The inventive method permits the use of (meth)acryl acid that contains acetic acid. The risk of a breakdown of the ester and the polymerization of the (meth)acryl compounds is reduced.

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