公开(公告)号：US4833267A

公开(公告)日：1989-05-23

申请号：US193523

申请日：1988-03-09

申请人： Sumio Nakashima ,  Hideki Sogabe ,  Hiroshi Yoshida ,  Atsushi Okubo

发明人： Sumio Nakashima ,  Hideki Sogabe ,  Hiroshi Yoshida ,  Atsushi Okubo

IPC分类号： C07B61/00 ,  C07C67/08 ,  C07C69/54

CPC分类号： C07C67/08

摘要： This invention relates to a method for the production of unsaturated carboxylic acid esters. More particularly, this invention relates to a method for efficient production of a corresponding ester from an acrylic acid or methacrylic acid (hereinafter referred to collectively as "(meth)acrylic acid") by the reaction of the (meth)acrylic acid with an aliphatic alcohol of 1 to 12 carbon atoms in the presence of a strongly acidic cation-exchange resin catalyst.

公开(公告)号：US4464229A

公开(公告)日：1984-08-07

申请号：US393484

申请日：1982-06-29

申请人： Takahisa Sato ,  Sumio Nakashima ,  Masao Baba

发明人： Takahisa Sato ,  Sumio Nakashima ,  Masao Baba

IPC分类号： C07C67/08 ,  C07C69/54 ,  B01D3/26 ,  B01D3/34 ,  C07C67/035 ,  C07C67/54

CPC分类号： C07C67/08 ,  Y10S203/22

摘要： In a process for producing an acrylic or methacrylic ester by esterifying acrylic or methacrylic acid with a lower aliphatic alcohol having 1 to 3 carbon atoms in the presence of an acidic catalyst, the improvement which comprises(1) distilling the resulting esterification reaction mixture while feeding the acrylic or methacrylic ester into a distillation column from outside the system, thereby to yield as a distillate a mixture composed of the acrylic or methacrylic ester, water and the unreacted alcohol and being substantially free from acrylic or methacrylic acid, and (2) recycling the residue in the distillation column, from which the ester and water formed have been substantially removed, to the esterification reaction in such a proportion that the mole ratio of acrylic or methacrylic acid to the alcohol in the entire starting materials fed to the esterification reaction is kept at 1:0.5-1.0.

摘要翻译： 在酸性催化剂存在下，用丙烯酸或甲基丙烯酸与具有1至3个碳原子的低级脂族醇进行酯化生产丙烯酸或甲基丙烯酸酯的方法，其改进包括：（1）在进料期间蒸馏所得酯化反应混合物 丙烯酸或甲基丙烯酸酯从系统外部进入蒸馏塔，从而产生作为馏出物的由丙烯酸或甲基丙烯酸酯，水和未反应的醇组成的混合物，并且基本上不含丙烯酸或甲基丙烯酸，和（2）回收 将基本上除去了所形成的酯和水的蒸馏塔中的残余物以酯化反应的比例使得在进料到酯化反应的整个原料中丙烯酸或甲基丙烯酸与醇的摩尔比为 保持在1：0.5-1.0。

公开(公告)号：US06417392B1

公开(公告)日：2002-07-09

申请号：US09164796

申请日：1998-10-01

申请人： Hideaki Nagano ,  Tadayoshi Kawashima ,  Tetsuya Kajihara ,  Kaoru Iwasaki ,  Sumio Nakashima

发明人： Hideaki Nagano ,  Tadayoshi Kawashima ,  Tetsuya Kajihara ,  Kaoru Iwasaki ,  Sumio Nakashima

IPC分类号： C07C6952

CPC分类号： B01D3/009 ,  C07C213/06 ,  Y02P20/127 ,  C07C219/20

摘要： In the operation of producing an alkylamino(meth)acrylate by the reaction of transesterification of an alkyl(meth)acrylate with an alkylamino alcohol, the alkyl alcohol by-produced during the transesterification is distilled in the form of an azeotropic mixture with the alkyl(meth)acrylate, the resultant distillate is purified with an ion-exchange resin and handled, on the other hand, the reaction solution is distilled to allow separation of the catalyst wherein is provided a method and apparatus for effecting, in the production of the alkylamino(meth)acrylate, the distillation under such a condition as represses the amount of in crease of the Michael adduct below 2%.

摘要翻译： 在通过（甲基）丙烯酸烷基酯与烷基氨基醇的酯交换反应制备烷基氨基（甲基）丙烯酸酯的操作中，在酯交换期间副产生的烷基醇与烷基（ 甲基）丙烯酸酯，所得馏出物用离子交换树脂纯化，另一方面，蒸馏反应溶液以允许分离催化剂，其中提供了在制备烷基氨基中实现的方法和装置 （甲基）丙烯酸酯，在抑制迈克尔加合物的折痕量低于2％的条件下进行蒸馏。