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公开(公告)号：US1450675A
公开(公告)日：1923-04-03
申请号：US20036917
申请日：1917-11-05
Applicant: DU PONT
Inventor： STINE CHARLES M
IPC: C07C201/16
CPC classification number: C07C201/16 , C06B21/0091 , C07C205/06
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公开(公告)号：US1393714A
公开(公告)日：1921-10-11
申请号：US33336119
申请日：1919-10-25
Applicant: DU PONT
Inventor： STINE CHARLES M A , LAWRENCE GILSON JOHN
IPC: C07C205/24
CPC classification number: C07C201/14 , C07C201/16 , C07C205/24
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公开(公告)号：US20240018088A1
公开(公告)日：2024-01-18
申请号：US18361533
申请日：2023-07-28
Applicant: Fudan University
Inventor： Fener CHEN , Minjie LIU
IPC: C07C201/16
CPC classification number: C07C201/16
Abstract: A separation and purification method of 2-nitroethanol, including: (a) reacting paraformaldehyde with nitromethane in the presence of a base to obtain a mixture of 2-nitroethanol (I), 2-nitro-1,3-propanediol (II) and tris(hydroxymethyl) nitromethane (III); and (b) selecting an extraction solvent in which 2-nitroethanol (I), 2-nitro-1,3-propanediol (II) and tris(hydroxymethyl) nitromethane (III) are different in solubility; adding the extraction solvent to the mixture followed by extraction, separation, and vacuum concentration to obtain the 2-nitroethanol (I).
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公开(公告)号：US20180201555A1
公开(公告)日：2018-07-19
申请号：US15742614
申请日：2016-07-08
Applicant: IFP ENERGIES NOUVELLES , ARKEMA FRANCE
Inventor： Catherine LAROCHE , Ludivine BOUVIER , Javier PEREZ-PELLITERO
CPC classification number: C07C7/13 , B01D15/08 , B01D2253/108 , B01J20/041 , B01J20/186 , B01J20/3085 , C07C15/08 , C07C29/76 , C07C37/82 , C07C201/16 , C07C209/86 , C07C15/02 , C07C39/07 , C07C205/06 , C07C211/50
Abstract: The present invention relates to zeolite adsorbents based on agglomerated zeolite X crystals comprising barium, potassium and sodium. These adsorbents find applications in the separation of aromatic C8 isomer fractions and especially xylene.
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Patent Agency Ranking
公开(公告)号：US09738592B2
公开(公告)日：2017-08-22
申请号：US15323800
申请日：2015-04-30
Applicant: Josef Meissner GmbH & Co. KG
Inventor： Jürgen Pöhlmann , Heinrich Hermann , Mirko Händel , Jürgen Gebauer , Tim Bergmann
IPC: C07C201/16 , B01D11/04 , B01D19/00 , B01J19/24 , C07C205/06
CPC classification number: C07C201/16 , B01D11/0488 , B01D19/0005 , B01J19/24 , B01J2219/24 , Y02P20/582 , C07C205/06
Abstract: The present invention relates to a method for purifying raw dinitrotoluenes resulting from dinitration of toluene in the presence of a nitric acid/sulfuric acid/nitrating acid mixture, and a device or plant for performing the method, and a corresponding production plant for producing dinitrotoluene, characterized in that (a) the raw dinitrotoluenes are first subjected to a wash with at least one washing medium after separation of the nitrating acid mixture, followed by a separation of the washing medium; and that (b) subsequently the washed dinitrotoluenes resulting from method step (a) are subjected to stripping (stripping gas treatment) with at least one gas (stripping gas).
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公开(公告)号：US09688606B2
公开(公告)日：2017-06-27
申请号：US15031100
申请日：2014-10-22
Applicant: BASF SE , Josef Meissner GmbH & Co. KG
Inventor： Samuel Neto , Rüdiger Fritz , Renate Hempel , Holger Allardt , Yuan Shen Dai , Barbara Becker , Sebastian Ahrens , Julia Leschinski , Henrich Hermann , Mirko Haendel , Jürgen Pöhlmann
IPC: C07C201/16 , C07C205/06 , B01D11/04 , C02F1/20 , C02F1/26 , C02F3/00 , B01D11/00 , C02F101/18 , C02F103/36
CPC classification number: C07C201/16 , B01D11/0488 , B01D11/0492 , B01D2011/002 , C02F1/20 , C02F1/26 , C02F3/00 , C02F2101/18 , C02F2103/36 , C07C205/06
Abstract: Process for scrubbing a crude mixture which is obtained in the nitration of toluene after separating off the nitrating acid and comprises dinitrotoluene, nitric acid, nitrogen oxides and sulfuric acid, which comprises two scrubbing steps (WS-I) and (WS-II), whereini) in a first scrubbing step (WS-I), the crude mixture is extracted with a scrubbing acid I comprising nitric acid, nitrogen oxides and sulfuric acid in a scrub comprising at least one extraction stage, where the scrubbing acid discharged from the first extraction stage (WS-I-1) of the first scrubbing step (WS-I) has a total acid content of from 10 to 40% by weight and a content of from 80 to 350 ppm of hydrocyanic acid, giving a prescrubbed crude mixture,ii) in a second scrubbing step (WS-II), the prescrubbed crude mixture comprising dinitrotoluene is extracted with a scrubbing acid II in a scrub comprising at least one, preferably at least 2, extraction stage(s), where the scrubbing acid discharged from the first extraction stage (WS-II-1) of the second scrubbing step (WS-II) has a pH of less than or equal to 4, giving a dinitrotoluene-comprising mixture which is essentially free of nitric acid, sulfuric acid, nitrogen oxides and hydrocyanic acid and has a content of not more than 300 ppm of nitric acid and nitrogen oxides, not more than 3 ppm of sulfate and not more than 50 ppm of hydrocyanic acid.
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公开(公告)号：US09498448B2
公开(公告)日：2016-11-22
申请号：US14843097
申请日：2015-09-02
Applicant: NEONC Technologies, Inc.
Inventor： Thomas Chen , Daniel Levin , Satish Puppali
IPC: C07C35/18 , A61K31/045 , C07C29/92 , C07C67/14 , C07C201/12 , C07C29/78 , C07C29/88 , C07C201/16 , A61K31/4188 , A61K45/06 , A61N5/10
CPC classification number: C07C29/92 , A61K31/045 , A61K31/4188 , A61K45/06 , A61N5/10 , C07B2200/07 , C07C29/78 , C07C29/86 , C07C29/88 , C07C67/14 , C07C201/12 , C07C201/16 , C07C2601/16 , C07C33/14 , C07C205/57 , C07C69/76 , C07C69/92
Abstract: The present invention provides a process for purifying a monoterpene or sesquiterpene having a purity greater than about 98.5% (w/w). The process comprises the steps of derivatizing the monoterpene (or sesquiterpene) to produce a monoterpene (or sesquiterpene) derivative, separating the monoterpene (or sesquiterpene) derivative, and releasing the monoterpene (or sesquiterpene) from the derivative. Also encompassed by the scope of the present invention is a pharmaceutical composition comprising a monoterpene (or sesquiterpene) having a purity greater than about 98.5% (w/w). The purified monoterpene can be used to treat a disease such as cancer. The present monoterpene (or sesquiterpene) may be administered alone, or may be co-administered with radiation or other therapeutic agents, such as chemotherapeutic agents.
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公开(公告)号：US20160332942A1
公开(公告)日：2016-11-17
申请号：US15220135
申请日：2016-07-26
Applicant: NEONC Technologies, Inc.
Inventor： Thomas CHEN , Daniel LEVIN , Satish PUPPALI
CPC classification number: C07C29/92 , A61K31/045 , A61K31/4188 , A61K45/06 , A61N5/10 , C07B2200/07 , C07C29/78 , C07C29/86 , C07C29/88 , C07C67/14 , C07C201/12 , C07C201/16 , C07C2601/16 , C07C33/14 , C07C205/57 , C07C69/76 , C07C69/92
Abstract: The present invention provides a process for purifying a monoterpene or sesquiterpene having a purity greater than about 98.5% (w/w). The process comprises the steps of derivatizing the monoterpene (or sesquiterpene) to produce a monoterpene (or sesquiterpene) derivative, separating the monoterpene (or sesquiterpene) derivative, and releasing the monoterpene (or sesquiterpene) from the derivative. Also encompassed by the scope of the present invention is a pharmaceutical composition comprising a monoterpene (or sesquiterpene) having a purity greater than about 98.5% (w/w). The purified monoterpene can be used to treat a disease such as cancer. The present monoterpene (or sesquiterpene) may be administered alone, or may be co-administered with radiation or other therapeutic agents, such as chemotherapeutic agents.
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公开(公告)号：US09480659B2
公开(公告)日：2016-11-01
申请号：US14817286
申请日：2015-08-04
Applicant: NEONC Technologies, Inc.
Inventor： Thomas Chen , Daniel Levin , Satish Puppali
IPC: C07C35/18 , A61K31/045 , C07C29/92 , C07C67/14 , C07C201/12 , C07C29/78 , C07C29/88 , C07C201/16 , A61K31/4188 , A61K45/06 , A61N5/10
CPC classification number: C07C29/92 , A61K31/045 , A61K31/4188 , A61K45/06 , A61N5/10 , C07B2200/07 , C07C29/78 , C07C29/86 , C07C29/88 , C07C67/14 , C07C201/12 , C07C201/16 , C07C2601/16 , C07C33/14 , C07C205/57 , C07C69/76 , C07C69/92
Abstract: The present invention provides a process for purifying a monoterpene or sesquiterpene having a purity greater than about 98.5% (w/w). The process comprises the steps of derivatizing the monoterpene (or sesquiterpene) to produce a monoterpene (or sesquiterpene) derivative, separating the monoterpene (or sesquiterpene) derivative, and releasing the monoterpene (or sesquiterpene) from the derivative. Also encompassed by the scope of the present invention is a pharmaceutical composition comprising a monoterpene (or sesquiterpene) having a purity greater than about 98.5% (w/w). The purified monoterpene can be used to treat a disease such as cancer. The present monoterpene (or sesquiterpene) may be administered alone, or may be co-administered with radiation or other therapeutic agents, such as chemotherapeutic agents.
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