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公开(公告)号：US20230202961A1
公开(公告)日：2023-06-29
申请号：US18115127
申请日：2023-02-28
Applicant: MONSANTO TECHNOLOGY LLC
Inventor： Howard C. Berk , Bruno de Kort , John Joseph Parlow , Amy E. Stroman , Junqiu Yang
CPC classification number: C07C63/10 , C07C37/685
Abstract: The present invention generally relates to processes for purification, recovery, and conversion of chlorophenol salts (e.g., 2,5-dichlorophenol and salts thereof). In various aspects, the present invention is related to removing one or more impurities from chlorophenol salt-containing process streams and/or recovering chlorophenol salts from process streams for use of the recovered chlorophenol elsewhere in an integrated process. Process streams that may be treated in accordance with the present invention include those incorporating one or more chlorophenol salts in a feed mixture and also those where one or more chlorophenol salts are present in a product or by-product stream of an integrated process. For example, conversion processes of the present invention are suitable as one piece of an integrated process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or a salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or a salt or ester thereof. The present invention further relates to processes for preparation, purification, and recovery of intermediates formed in integrated processes utilizing chlorophenol salts such as 2,5-dichlorophenol as starting material, including the intermediate 3,6-dichlorosalicylic acid (3,6-DCSA) formed during preparation of dicamba from 2,5-dichlorophenol.
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公开(公告)号：US20210163395A1
公开(公告)日：2021-06-03
申请号：US17136341
申请日：2020-12-29
Applicant: Monsanto Technology LLC
Inventor： Howard C. Berk , Bruno de Kort , John Joseph Parlow , Amy E. Stroman , Junqiu Yang
Abstract: The present invention generally relates to processes for purification, recovery, and conversion of chlorophenol salts (e.g., 2,5-dichlorophenol and salts thereof). In various aspects, the present invention is related to removing one or more impurities from chlorophenol salt-containing process streams and/or recovering chlorophenol salts from process streams for use of the recovered chlorophenol elsewhere in an integrated process. Process streams that may be treated in accordance with the present invention include those incorporating one or more chlorophenol salts in a feed mixture and also those where one or more chlorophenol salts are present in a product or by-product stream of an integrated process. For example, conversion processes of the present invention are suitable as one piece of an integrated process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or a salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or a salt or ester thereof. The present invention further relates to processes for preparation, purification, and recovery of intermediates formed in integrated processes utilizing chlorophenol salts such as 2,5-dichlorophenol as starting material, including the intermediate 3,6-dichlorosalicylic acid (3,6-DCSA) formed during preparation of dicamba from 2,5-dichlorophenol.
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Patent Agency Ranking
公开(公告)号：US11629114B2
公开(公告)日：2023-04-18
申请号：US17136341
申请日：2020-12-29
Applicant: Monsanto Technology LLC
Inventor： Howard C. Berk , Bruno de Kort , John Joseph Parlow , Amy E. Stroman , Junqiu Yang
Abstract: The present invention generally relates to processes for purification, recovery, and conversion of chlorophenol salts (e.g., 2,5-dichlorophenol and salts thereof). In various aspects, the present invention is related to removing one or more impurities from chlorophenol salt-containing process streams and/or recovering chlorophenol salts from process streams for use of the recovered chlorophenol elsewhere in an integrated process. Process streams that may be treated in accordance with the present invention include those incorporating one or more chlorophenol salts in a feed mixture and also those where one or more chlorophenol salts are present in a product or by-product stream of an integrated process. For example, conversion processes of the present invention are suitable as one piece of an integrated process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or a salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or a salt or ester thereof. The present invention further relates to processes for preparation, purification, and recovery of intermediates formed in integrated processes utilizing chlorophenol salts such as 2,5-dichlorophenol as starting material, including the intermediate 3,6-dichlorosalicylic acid (3,6-DCSA) formed during preparation of dicamba from 2,5-dichlorophenol.
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公开(公告)号：US10913701B2
公开(公告)日：2021-02-09
申请号：US16467622
申请日：2017-12-04
Applicant: Monsanto Technology LLC
Inventor： Howard C. Berk , Bruno de Kort , John Joseph Parlow , Amy E. Stroman , Junqiu Yang
Abstract: The present invention generally relates to processes for purification, recovery, and conversion of chlorophenol salts (e.g., 2,5-dichlorophenol and salts thereof). In various aspects, the present invention is related to removing one or more impurities from chlorophenol salt-containing process streams and/or recovering chlorophenol salts from process streams for use of the recovered chlorophenol elsewhere in an integrated process. Process streams that may be treated in accordance with the present invention include those incorporating one or more chlorophenol salts in a feed mixture and also those where one or more chlorophenol salts are present in a product or by-product stream of an integrated process. For example, conversion processes of the present invention are suitable as one piece of an integrated process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or a salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or a salt or ester thereof. The present invention further relates to processes for preparation, purification, and recovery of intermediates formed in integrated processes utilizing chlorophenol salts such as 2,5-dichlorophenol as starting material, including the intermediate 3,6-dichlorosalicylic acid (3,6-DCSA) formed during preparation of dicamba from 2,5-dichlorophenol.
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公开(公告)号：US20180179132A1
公开(公告)日：2018-06-28
申请号：US15578869
申请日：2016-05-31
Applicant: Monsanto Technology LLC
Inventor： John H. Ahn , Eduardo A. Casanova , Kam-To Wan , Junqiu Yang
IPC: C07C37/72 , C07C51/15 , C07C51/347 , C07C67/31
CPC classification number: C07C37/72 , C02F1/20 , C02F1/26 , C02F1/66 , C02F2101/345 , C02F2101/36 , C07C37/74 , C07C37/84 , C07C39/30 , C07C51/09 , C07C51/15 , C07C51/347 , C07C67/31 , C07C65/05 , C07C69/92 , C07C65/21
Abstract: Various processes for the separation of a mixture containing dichlorophenols are described. In various aspects, the present invention relates to separation processes that produce an extract enriched in 2,4-dichlorophenol content and an extract enriched in 2,5-dichlorophenol content. The present invention further relates to various processes that integrate with these separation processes, such as a process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or salt or ester thereof.
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公开(公告)号：US20190322612A1
公开(公告)日：2019-10-24
申请号：US16467622
申请日：2017-12-04
Applicant: Monsanto Technology LLC
Inventor： Howard C. Berk , Bruno de Kort , John Joseph Parlow , Amy E. Stroman , Junqiu Yang
Abstract: The present invention generally relates to processes for purification, recovery, and conversion of chlorophenol salts (e.g., 2,5-dichlorophenol and salts thereof). In various aspects, the present invention is related to removing one or more impurities from chlorophenol salt-containing process streams and/or recovering chlorophenol salts from process streams for use of the recovered chlorophenol elsewhere in an integrated process. Process streams that may be treated in accordance with the present invention include those incorporating one or more chlorophenol salts in a feed mixture and also those where one or more chlorophenol salts are present in a product or by-product stream of an integrated process. For example, conversion processes of the present invention are suitable as one piece of an integrated process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or a salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or a salt or ester thereof. The present invention further relates to processes for preparation, purification, and recovery of intermediates formed in integrated processes utilizing chlorophenol salts such as 2,5-dichlorophenol as starting material, including the intermediate 3,6-dichlorosalicylic acid (3,6-DCSA) formed during preparation of dicamba from 2,5-dichlorophenol.
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公开(公告)号：US10343965B2
公开(公告)日：2019-07-09
申请号：US15578869
申请日：2016-05-31
Applicant: MONSANTO TECHNOLOGY LLC
Inventor： Kam-To Wan , Eduardo A. Casanova , John H. Ahn , Junqiu Yang
IPC: C02F1/20 , C02F1/26 , C02F1/66 , C07C37/72 , C07C37/74 , C07C37/84 , C07C39/30 , C07C51/09 , C07C51/15 , C07C65/05 , C07C65/21 , C07C67/31 , C07C69/92 , C02F101/34 , C02F101/36 , C07C51/347
Abstract: Various processes for the separation of a mixture containing dichlorophenols are described. In various aspects, the present invention relates to separation processes that produce an extract enriched in 2,4-dichlorophenol content and an extract enriched in 2,5-dichlorophenol content. The present invention further relates to various processes that integrate with these separation processes, such as a process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or salt or ester thereof.
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