-
Patent Agency Ranking
1.发明授权Method for the preparation of α,α,α′,α′-tetrachloro-p-xylene with high purity 有权制备高纯度α，α，α'，α'-四氯对二甲苯的方法公开(公告)号：US07060862B2
公开(公告)日：2006-06-13
申请号：US10747129
申请日：2003-12-30
Applicant: Shean-Jeng Jong , Chun-Hsu Lin , Chao-chou Tu , Chung-Chien Chang
Inventor： Shean-Jeng Jong , Chun-Hsu Lin , Chao-chou Tu , Chung-Chien Chang
Abstract: A method of synthesizing a high purity product of α,α,α′,α′-tetrachloro-p-xylene is disclosed. The method includes carrying out a first stage reaction of terephthaldicarboxaldehyde with a mixture of SOCl2 and dimethylformamide (DMF) to obtain a product mixture containing α,α,α′,α′-tetrachloro-p-xylene as a major product and 4-dichloromethyl benzaldehyde as a side product; adding SOCl2 and DMF to the product mixture of the first stage reaction to undergo a second stage reaction; and to a cool water adding the resulting product mixture from the second stage reaction to obtain a solid product of α,α,α′,α′-tetrachloro-p-xylene with a purity of 90-99 mol %.
Abstract translation: 公开了一种合成α，α，α'，α'-四氯对二甲苯的高纯度产物的方法。 该方法包括进行对苯二甲醛与SOCl 2/2和二甲基甲酰胺（DMF）的混合物的第一阶段反应，得到含有α，α，α'，α'-四氯对二甲苯的产物混合物 作为主要产物和4-二氯甲基苯甲醛作为副产物; 向第一阶段反应的产物混合物中加入SOCl 2和DMF进行第二阶段反应; 并加入从第二阶段反应得到的产物混合物的冷水，得到纯度为90-99mol％的α，α，α'，α'-四氯对二甲苯的固体产物。
-
2.发明申请公开(公告)号：US20050256349A1
公开(公告)日：2005-11-17
申请号：US10898925
申请日：2004-07-27
Applicant: Shean-Jeng Jong , Chun-Hsu Lin , Chao-Chou Tu , Chung-Chien Chang
Inventor： Shean-Jeng Jong , Chun-Hsu Lin , Chao-Chou Tu , Chung-Chien Chang
CPC classification number: B01D5/0063 , B01D3/085 , B01D3/10 , B01D5/009 , C07C17/14 , C07C17/386 , C07C22/08
Abstract: A method and a device for purifying 1,4-bis(bromodifluoromethyl)benzene are disclosed. In order to solve the problem of hard to purify and separate 1,4-bis(bromodifluoromethyl)benzene crude products, diphenylmethane that has a higher boiling point and does not interact with 1,4-bis(bromodifluoromethyl)benzene is mixed with the 1,4-bis(bromodifluoromethyl)benzene crude products for evaporation. Afterwards, the purity of the vaporized product is detected and only that reaching an expected purity is collected to obtain high-purity 1,4-bis(bromodifluoromethyl)benzene.
Abstract translation: 公开了用于纯化1,4-双（溴二氟甲基）苯的方法和装置。 为了解决难以纯化和分离1,4-双（溴二氟甲基）苯粗产物的问题，具有较高沸点并且不与1,4-双（溴二氟甲基）苯相互作用的二苯基甲烷与1 ，4-双（溴二氟甲基）苯粗产物蒸发。 之后，检测蒸发产物的纯度，仅收集达到预期纯度的纯度，得到高纯度的1,4-双（溴二氟甲基）苯。
-
3.发明申请METHOD AND DEVICE FOR PURIFYING 1,4-BIS (BROMODIFLUOROMETHYL) BENZENE 审中-公开用于纯化1,4-BIS（溴代三氟甲磺酸）苯的方法和装置公开(公告)号：US20090065345A1
公开(公告)日：2009-03-12
申请号：US12270919
申请日：2008-11-14
Applicant: Shean-Jeng JONG , Chun-Hsu LIN , Chao-Chou TU , Chung-Chien CHANG
Inventor： Shean-Jeng JONG , Chun-Hsu LIN , Chao-Chou TU , Chung-Chien CHANG
IPC: B01D3/02
CPC classification number: B01D5/0063 , B01D3/085 , B01D3/10 , B01D5/009 , C07C17/14 , C07C17/386 , C07C22/08
Abstract: A method and a device for purifying 1,4-bis (bromodifluoromethyl) benzene are disclosed. In order to solve the problem of hard to purify and separate 1,4-bis (bromodifluoromethyl) benzene crude products, diphenylmethane that has a higher boiling point and does not interact with 1,4-bis (bromodifluoromethyl) benzene is mixed with the 1,4-bis (bromodifluoromethyl) benzene crude products for evaporation. Afterwards, the purity of the vaporized product is detected and only that reaching an expected purity is collected to obtain high-purity 1,4-bis (bromodifluoromethyl) benzene.
Abstract translation: 公开了用于纯化1,4-双（溴二氟甲基）苯的方法和装置。 为了解决难以纯化和分离1,4-双（溴二氟甲基）苯粗产物的问题，具有较高沸点并且不与1,4-双（溴二氟甲基）苯相互作用的二苯基甲烷与1 ，4-双（溴二氟甲基）苯粗产物蒸发。 之后，检测蒸发产物的纯度，仅收集达到预期纯度的纯度，得到高纯度的1,4-双（溴二氟甲基）苯。
-
4.发明授权公开(公告)号：US07465841B2
公开(公告)日：2008-12-16
申请号：US10898925
申请日：2004-07-27
Applicant: Shean-Jeng Jong , Chun-Hsu Lin , Chao-Chou Tu , Chung-Chien Chang
Inventor： Shean-Jeng Jong , Chun-Hsu Lin , Chao-Chou Tu , Chung-Chien Chang
CPC classification number: B01D5/0063 , B01D3/085 , B01D3/10 , B01D5/009 , C07C17/14 , C07C17/386 , C07C22/08
Abstract: A method and a device for purifying 1,4-bis(bromodifluoromethyl)benzene are disclosed. In order to solve the problem of hard to purify and separate 1,4-bis(bromodifluoromethyl)benzene crude products, diphenylmethane that has a higher boiling point and does not interact with 1,4-bis(bromodifluoromethyl)benzene is mixed with the 1,4-bis(bromodifluoromethyl)benzene crude products for evaporation. Afterwards, the purity of the vaporized product is detected and only that reaching an expected purity is collected to obtain high-purity 1,4-bis(bromodifluoromethyl)benzene.
Abstract translation: 公开了用于纯化1,4-双（溴二氟甲基）苯的方法和装置。 为了解决难以纯化和分离1,4-双（溴二氟甲基）苯粗产物的问题，具有较高沸点并且不与1,4-双（溴二氟甲基）苯相互作用的二苯基甲烷与1 ，4-双（溴二氟甲基）苯粗产物蒸发。 之后，检测蒸发产物的纯度，仅收集达到预期纯度的纯度，得到高纯度的1,4-双（溴二氟甲基）苯。
-
5.发明申请Method for the preparation of alpha, alpha, alpha', alpha' -tetrachloro-p-xylene with high purity 有权用于制备高纯度的α，α，α'，α'-四氯对二甲苯的方法公开(公告)号：US20050143608A1
公开(公告)日：2005-06-30
申请号：US10747129
申请日：2003-12-30
Applicant: Shean-Jeng Jong , Chun-Hsu Lin , Chao-chou Tu , Chung-Chien Chang
Inventor： Shean-Jeng Jong , Chun-Hsu Lin , Chao-chou Tu , Chung-Chien Chang
Abstract: A method of synthesizing a high purity product of α, α, α′, α′-tetrachloro-p-xylene is disclosed. The method includes carrying out a first stage reaction of terephthaldicarboxaldehyde with a mixture of SOCl2 and dimethylformamide (DMF) to obtain a product mixture containing α, α, α′, α′-tetrachloro-p-xylene as a major product and 4-dichloromethyl benzaldehyde as a side product; adding SOCl2 and DMF to the product mixture of the first stage reaction to undergo a second stage reaction; and to a cool water adding the resulting product mixture from the second stage reaction to obtain a solid product of α, α, α′, α′-tetrachloro-p-xylene with a purity of 90-99 mol %.
Abstract translation: 公开了一种合成α，α，α'，α'-四氯对二甲苯的高纯度产物的方法。 该方法包括进行对苯二甲醛与SOCl 2/2和二甲基甲酰胺（DMF）的混合物的第一阶段反应，得到含有α，α，α'，α'-四氯对二甲苯的产物混合物 作为主要产物和4-二氯甲基苯甲醛作为副产物; 向第一阶段反应的产物混合物中加入SOCl 2和DMF进行第二阶段反应; 并加入从第二阶段反应得到的产物混合物的冷水，得到纯度为90-99mol％的α，α，α'，α'-四氯对二甲苯的固体产物。
-
-
-
-
Search Results
5
records
(took 0.01 seconds)
