公开(公告)号：US09845281B2

公开(公告)日：2017-12-19

申请号：US15300566

申请日：2014-07-29

Applicant: Wanhua Chemical Group Co., Ltd.

Inventor： Junping Li ,  Haibo Chen ,  Lichang Zhang ,  Chunxian Cui ,  Yuan Li ,  Weiqi Hua ,  Jiansheng Ding ,  Junhua Zhang ,  Zhaokun Cheng

IPC: C07C67/26 ,  C08F220/06

CPC classification number: C07C67/26 ,  C07C69/54 ,  C08F220/06

Abstract: Hydroxyethyl (methyl)acrylate is prepared by a process of a combination of a three-stage tubular reactor and a tower reactor, wherein, firstly, a catalyst, a polymerization inhibitor and (methyl) acrylic acid are mixed until the solids are dissolved, then mixed with a part of ethylene oxide and thereafter enter into a first tubular reactor for a reaction, a reaction liquid flowing out from the first tubular reactor is mixed with a certain amount of ethylene oxide and enters into a second tubular reactor for a reaction, a reaction liquid flowing out from the second tubular reactor is then mixed with a certain amount of ethylene oxide and thereafter enters into a third tubular reactor, and a reaction liquid flowing out from the third tubular reactor is then passed through a stage of an adiabatic tower reactor and aged such that a product liquid is obtained from extraction.

公开(公告)号：US20170183288A1

公开(公告)日：2017-06-29

申请号：US15300566

申请日：2014-07-29

Applicant: Wanhua Chemical Group Co., Ltd.

Inventor： Junping Li ,  Haibo Chen ,  Lichang Zhang ,  Chunxian Cui ,  Yuan Li ,  Weiqi Hua ,  Jiansheng Ding ,  Junhua Zhang ,  Zhaokun Cheng

IPC: C07C67/26 ,  C08F220/06

CPC classification number: C07C67/26 ,  C07C69/54 ,  C08F220/06

Abstract: Hydroxyethyl (methyl)acrylate is prepared by a process of a combination of a three-stage tubular reactor and a tower reactor, wherein, firstly, a catalyst, a polymerization inhibitor and (methyl) acrylic acid are mixed until the solids are dissolved, then mixed with a part of ethylene oxide and thereafter enter into a first tubular reactor for a reaction, a reaction liquid flowing out from the first tubular reactor is mixed with a certain amount of ethylene oxide and enters into a second tubular reactor for a reaction, a reaction liquid flowing out from the second tubular reactor is then mixed with a certain amount of ethylene oxide and thereafter enters into a third tubular reactor, and a reaction liquid flowing out from the third tubular reactor is then passed through a stage of an adiabatic tower reactor and aged such that a product liquid is obtained from extraction.