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公开(公告)号：US20230399449A1
公开(公告)日：2023-12-14
申请号：US18049780
申请日：2022-10-26
发明人： Seulgi KIM , Gi Jung KIM , Jinwoo PARK
IPC分类号： C08F283/06
CPC分类号： C08F283/06
摘要： Disclosed is a process for producing a polymer polyol, comprising: (a) reacting a first mixture comprising an initiator, a polyol, a diluent, a stabilizer, a styrene-based monomer and a nitrile-based monomer; and (b) continuously adding, to the first mixture, a second mixture comprising an initiator, a polyol, a stabilizer, a styrene-based monomer and a nitrile-based monomer to react, wherein the first mixture and second mixture comprise the stabilizer in a weight ratio of 1:1 to 3, respectively, and a polymer polyol produced according to the process.
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公开(公告)号：US20230391908A1
公开(公告)日：2023-12-07
申请号：US18033227
申请日：2021-10-20
发明人： Gi Jung KIM , Seulgi KIM , Jinwoo PARK
IPC分类号： C08F212/10 , C08F8/00 , C08F6/10
CPC分类号： C08F212/10 , C08F6/10 , C08F8/00
摘要： Disclosed is a method for preparing polymer polyol comprising the steps of: (a) polymerizing polyol and aromatic vinyl monomer in the presence of an organic diluting agent; (b) additionally inputting and polymerizing polyol, aromatic vinyl monomer and unsaturated nitrile monomer in the product of step (a); and (c) removing the organic diluting agent from the product of step (b), wherein the organic diluting agent is compatible with the polymer of the aromatic vinyl monomer.
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3.发明公开公开(公告)号：US20240034821A1
公开(公告)日：2024-02-01
申请号：US18331593
申请日：2023-06-08
发明人： Jinwoo PARK , Gi Jung KIM , Seulgi KIM , Jae Yeong SONG
IPC分类号： C08F212/10 , C08G18/62 , C08G18/76 , C08J9/12
CPC分类号： C08F212/10 , C08G18/6262 , C08G18/7671 , C08J9/125 , C08F2800/20 , C08G2110/0008 , C08G2110/0058 , C08G2110/0083 , C08J2375/04 , C08J2203/10 , C08J2205/06
摘要： Provided are a polymer polyol dispersion stabilizer, which is prepared by reacting a first polyol having a hydroxyl value (OHV) of 5 to 50 mgKOH/g and an ethylene oxide content of less than 20 wt %, a second polyol having an OHV of 50 to 100 mgKOH/g and an ethylene oxide content of 20 wt % or more, and a reactive unsaturated compound having one or more carbon-carbon double bonds and two or more carbon-oxygen double bonds, and a method of preparing the same.
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4.发明公开公开(公告)号：US20240239943A1
公开(公告)日：2024-07-18
申请号：US18015591
申请日：2022-04-08
发明人： Jinwoo PARK , Gi Jung KIM , Seulgi KIM , Dong Ho KIM , Yejin CHOI
CPC分类号： C08G18/0857 , C08G18/4833 , C08G18/622
摘要： Disclosed is a polymer polyol stabilizer, prepared by reacting: a polyol having a hydroxyl value of 5 to 100 mgKOH/g and containing ethylene oxide in an amount of 50 wt % or more; and a reactive unsaturated compound having one or more carbon-carbon double bonds and two or more carbon-oxygen double bonds, a polymer polyol polymerized by comprising the polymer polyol stabilizer, and a method for preparing the polymer polyol.
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