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1.发明申请公开(公告)号：US20180355159A1
公开(公告)日：2018-12-13
申请号：US16060162
申请日：2016-10-31
IPC分类号： C08L25/08 , B01J39/20 , C08K5/17 , C08K5/3432 , C07C39/16
CPC分类号： C08L25/08 , B01J31/08 , B01J39/20 , C07C39/16 , C08F8/30 , C08F8/34 , C08F212/08 , C08F212/36 , C08K5/17 , C08K5/3432 , C08F212/14 , C08F12/30
摘要： This invention relates to an ion exchange resin for producing bisphenol with high percent conversion and high percent selectivity to bisphenol, especially 4,4′ isopropyhdenediphenol, wherein said ion exchange resin comprising aromatic polymer having sulfonic acid group modified with at least one promoter selected from compounds shown in the structure (I), (II), (III), (IV) or its amine salt: wherein R represents hydrocarbon unit with 1 to 6 carbon atoms selected from alkyl group, alkenyl group, alkynyl group, phenyl group, or optionally hydrocarbon containing carbonyl group having 1 to 6 carbon atoms; X represents heteroatom; n is an integer number from 1 to 4.
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公开(公告)号：US20220363620A1
公开(公告)日：2022-11-17
申请号：US17623323
申请日：2020-06-17
摘要： The present invention relates to an isomerization process of product obtained from bisphenol preparation from a condensation reaction of ketone and phenol comprising contacting the product obtained from bisphenol preparation from a condensation reaction of ketone and phenol with the ion exchange resin in aqueous condition for the isomerization of the undesired product and separating the product having higher bisphenol content, wherein said ion exchange resin is aromatic polymer having the sulfonic acid group modified with at least one promoter selected from the compound shown in the structure (I):
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3.发明申请公开(公告)号：US20200095192A1
公开(公告)日：2020-03-26
申请号：US16618902
申请日：2018-05-30
IPC分类号： C07C233/49 , C07C233/47 , C07C233/83 , C07C231/14
摘要： The present invention relates to a new diethanolamine derivative chelating agent having a high water solubility, a good chelating property, and biological degradation. The said new chelating agent can be prepared from reaction of diethanolamine and cyclic anhydride compound using lewis acid as the catalyst. The said process is uncomplicated, and does not use a severe condition, and also reduces the use of harmful chemicals.
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公开(公告)号：US20190202980A1
公开(公告)日：2019-07-04
申请号：US16068957
申请日：2016-11-14
发明人： Supakanok THONGYAI , Papapida PORNSURIYASAK , Suchada TANG-AMORNSUKSAN , Sarawut LUNVONGSA , Montira UPRIJIT , Siriwanna OUNKAEW
摘要： The present invention relates to a method for preparing poly(carbonate-etherimide) compound comprising polycarbonate segment as shown in the structure (A) and polyetherimide segment as shown in the structure (B). Said method does not contain a highly toxic phosgene in its operation, can be performed easily, and can be operated at not high temperature. wherein R1 represents aromatic with 6 to 30 carbon atoms or, optionally said aromatic is bonded with heteroatom; R2 represents aromatic with 6 to 30 carbon atoms or, optionally said aromatic is bonded with heteroatom; m is an integer from 1 to 15; and n is an integer from 1 to 10.
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