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公开(公告)号：US10315981B2
公开(公告)日：2019-06-11
申请号：US15778944
申请日：2016-11-24
申请人： SHELL OIL COMPANY
发明人： Kunquan Yu , Garo Garbis Vaporciyan
摘要： A process for preparing a diaryl carbonate from a dialkyl carbonate and an aryl alcohol is disclosed. The process takes place in apparatus comprising at least two distillation columns, and at least one of the distillation columns is operated at subatmospheric pressure which is achieved using vacuum equipment.
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公开(公告)号：US10308586B2
公开(公告)日：2019-06-04
申请号：US15543272
申请日：2016-01-14
申请人： SHELL OIL COMPANY
发明人： Garo Garbis Vaporciyan , Kunquan Yu
摘要： The invention relates to a process for preparing an aromatic carbonate, comprising reacting a dialkyl carbonate or an alkyl aryl carbonate with an aryl alcohol or an alkyl aryl carbonate, resulting in an aromatic carbonate which is an alkyl aryl carbonate or a diaryl carbonate.
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公开(公告)号：US11511269B2
公开(公告)日：2022-11-29
申请号：US17071677
申请日：2020-10-15
申请人： SHELL OIL COMPANY
IPC分类号： B01J37/02 , B01J31/02 , C10G45/08 , B01J21/04 , B01J23/755 , B01J23/882 , B01J23/883 , B01J35/02 , B01J35/10
摘要： A highly active hydroprocessing catalyst that comprises a doped support impregnated with at lease one hydrogenation metal component and filled with an organic additive blend. The catalyst is made by providing a doped support particle followed by impregnating the doped support particle with a metal impregnation solution to provide a metal-impregnated doped support particle. The metal-impregnated doped support particle is dried but not calcined and impregnated with an organic additive blend component.
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公开(公告)号：US10654973B2
公开(公告)日：2020-05-19
申请号：US16064393
申请日：2016-12-20
申请人： SHELL OIL COMPANY
发明人： Garo Garbis Vaporciyan , Kunquan Yu
摘要： A process for producing polycarbonate comprising contacting a dihydroxy capped carbonate and a diaryl carbonate in a reaction zone in the presence of a polymerization catalyst under polymerization conditions to produce polycarbonate. The dihydroxy capped carbonate is a carbonate with a dihydroxy compound on each end, and it is formed by the reaction of a dihydroxy compound with a dialkyl carbonate. The dihydroxy compound is a dihydroxy aromatic compound.
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公开(公告)号：US10239994B2
公开(公告)日：2019-03-26
申请号：US15538668
申请日：2015-12-21
申请人： SHELL OIL COMPANY
发明人： Garo Garbis Vaporciyan , Kunquan Yu
摘要： The invention relates to a composition comprising a titanium or zirconium alkoxide or aryloxide, wherein the alkoxy group in the titanium or zirconium alkoxide is a group of formula R—O− wherein R is an alkyl group having 1 to 4 carbon atoms and the aryloxy group in the titanium or zirconium aryloxide is a group of formula Ar—O− wherein Ar is an aryl group having 6 to 12 carbon atoms, and wherein the composition additionally comprises 0.1 to 50 wt. % of an organic carbonate, based on the total weight of the composition.
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