公开(公告)号：US09765007B2

公开(公告)日：2017-09-19

申请号：US14917114

申请日：2014-09-18

Applicant: Rohm and Haas Company

Inventor： Stacy W. Hoy, IV ,  Dmitri A. Kraptchetov ,  Mark A. Silvano

IPC: C07C67/00 ,  C07C45/83 ,  C07C45/65 ,  C07C45/80 ,  C07C45/82 ,  C07C45/50 ,  C07C45/61 ,  C07C67/44

CPC classification number: C07C45/83 ,  C07C45/505 ,  C07C45/61 ,  C07C45/65 ,  C07C45/80 ,  C07C45/82 ,  C07C67/44 ,  C07C47/22

Abstract: A process for preparing dry methacrolein, and a process for producing methyl methacrylate are disclosed.

公开(公告)号：US20170247312A1

公开(公告)日：2017-08-31

申请号：US15521785

申请日：2015-10-02

Applicant: Dow Global Technologies LLC ,  ROHM AND HAAS COMPANY

Inventor： Zubin B. Kuvadia ,  Kirk W. Limbach ,  Dmitri A. Kraptchetov ,  Mark A. Silvano

IPC: C07C67/54 ,  B01D3/14 ,  C07C67/42

Abstract: A process for continuously removing water in situ from an oxidative esterification reaction includes (a) conducting a first oxidative esterification reaction in a first reactor or reaction zone, wherein the total number of reactors or reaction zones is n and n is at least 2; (b) removing a crude product stream from the first reactor or reaction zone; (c) introducing the crude product stream to a distillation column to generate a column overheads stream and a column bottoms stream; (d) passing at least a portion of the columns bottoms stream to the product recovery zone; and (e) passing at least a portion of the column overheads stream to a subsequent reactor or reaction zone; and (f) repeating steps (a)-(e) for each subsequent reactor or reaction zone such that the number of distillation columns less than n, and wherein the at least a portion of the column overheads stream contains less than 1 weight percent (wt %) water based on the total weight of the at least a portion of the column overheads stream.

公开(公告)号：US20160229779A1

公开(公告)日：2016-08-11

申请号：US14917114

申请日：2014-09-18

Applicant: ROHM AND HAAS COMPANY

Inventor： Stacy W. Hoy, IV ,  Dmitri A. Kraptchetov ,  Mark A. Silvano

IPC: C07C45/83 ,  C07C45/50 ,  C07C45/61 ,  C07C45/80 ,  C07C67/44

CPC classification number: C07C45/83 ,  C07C45/505 ,  C07C45/61 ,  C07C45/65 ,  C07C45/80 ,  C07C45/82 ,  C07C67/44 ,  C07C47/22

Abstract: A process for preparing dry methacrolein, and a process for producing methyl methacrylate are disclosed.

Abstract translation: 公开了一种制备干甲基丙烯醛的方法和一种生产甲基丙烯酸甲酯的方法。