Patents by Inventor Liangming Luo
Liangming Luo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11691943Abstract: The present disclosure provides a preparation method of 4-(heptafluoro-2-propyl)-2-trifluoromethylaniline and an application thereof. The preparation method comprises the following steps: reacting 2-aminobenzotrifluoride and 2-bromoheptafluoropropane in the presence of sodium formate or hydrates thereof and a SO2 reagent, so as to obtain 4-(heptafluoro-2-propyl)-2-trifluoromethylaniline. The present disclosure adds sodium formate or hydrate thereof and the SO2 reagent during the reaction of 2-aminobenzotrifluoride and 2-bromoheptafluoropropane. Under the cooperation of these two compounds, the yield of the reaction is high. And the purity of the product is high, the operation method is simple, the cost is relatively low, and the pH of the reaction doesn't need to be controlled.Type: GrantFiled: March 4, 2022Date of Patent: July 4, 2023Inventors: Chaoqun Huang, Jintao Zhu, Liangming Luo, Rong Zhang
-
Publication number: 20230062431Abstract: The present disclosure provides a preparation method of 4-(heptafluoro-2-propyl)-2-trifluoromethylaniline and an application thereof. The preparation method comprises the following steps: reacting 2-aminobenzotrifluoride and 2-bromoheptafluoropropane in the presence of sodium formate or hydrates thereof and a SO2 reagent, so as to obtain 4-(heptafluoro-2-propyl)-2-trifluoromethylaniline. The present disclosure adds sodium formate or hydrate thereof and the SO2 reagent during the reaction of 2-aminobenzotrifluoride and 2-bromoheptafluoropropane. Under the cooperation of these two compounds, the yield of the reaction is high. And the purity of the product is high, the operation method is simple, the cost is relatively low, and the pH of the reaction doesn't need to be controlled.Type: ApplicationFiled: March 4, 2022Publication date: March 2, 2023Inventors: Chaoqun HUANG, Jintao ZHU, Liangming LUO, Rong ZHANG
-
Publication number: 20230020373Abstract: Disclosed are a 3-N-cyclopropylmethyl-2-fluorobenzamide compound, a preparation method therefor and the use thereof. The compound has a structure as represented by the following formula I. This compound can be used for the preparation of an m-diamide compound substituted with a 3-N-cyclopropylmethyl derivative. The m-diamide compound substituted with the 3-N-cyclopropylmethyl derivative, when serving as an insecticide, has the characteristics of a good fast-acting property, needing to use a low amount thereof, and being more beneficial for environmental protection. The 3-N-cyclopropylmethyl-2-fluorobenzamide compound is easy to synthesize and has mild conditions, and when used for preparing a m-diamide compound insecticide substituted with a 3-N-cyclopropylmethyl derivative, same is easy to synthesize and has a low synthesis cost and a high yield.Type: ApplicationFiled: October 26, 2020Publication date: January 19, 2023Inventors: Liang LV, Jintao ZHU, Jiyong LIU, Liangming LUO, Chaoqun HUANG
-
Patent number: 11407710Abstract: Provided is a method for preparing an N-cyclopropylmethyl aniline compound, which comprises hydrogenating a compound represented by Formula II and cyclopropyl formaldehyde as raw materials in the presence of an acid and catalyst to generate an N-cyclopropylmethyl aniline compound represented by Formula I, wherein R is alkoxy, alkylamino or a substituted anilino group represented by Formula III.Type: GrantFiled: December 3, 2021Date of Patent: August 9, 2022Inventors: Chaoqun Huang, Jintao Zhu, Liang Lv, Liangming Luo, Rong Zhang, Jiyong Liu
-
Publication number: 20220177414Abstract: Provided is a method for preparing an N-cyclopropylmethyl aniline compound, which comprises hydrogenating a compound represented by Formula II and cyclopropyl formaldehyde as raw materials in the presence of an acid and catalyst to generate an N-cyclopropylmethyl aniline compound represented by Formula I, wherein R is alkoxy, alkylamino or a substituted anilino group represented by Formula III.Type: ApplicationFiled: December 3, 2021Publication date: June 9, 2022Inventors: Chaoqun HUANG, Jintao ZHU, Liang LV, Liangming LUO, Rong ZHANG, Jiyong LIU
-
Patent number: 11180443Abstract: The present disclosure provides a preparation method for m-diamide compounds. The method includes the following steps: 2-fluoro-3-nitrobenzoyl chloride and 4-(perfluoropropane-2-yl)-2-(trifluoromethyl)aniline are subjected to a condensation reaction, followed by a reduction reaction and an alkylation reaction to give 2-fluoro-3-(alkylamino)-N-(4-(perfluoropropane-2-yl)-2-(trifluoromethyl)phenyl)benzamide, which reacts with an acyl chloride compound to give 2-fluoro-3-(alkylbenzamido)-N-(4-(perfluoropropane-2-yl)-2-(trifluoromethyl)phenyl)benzamide, which is finally brominated to obtain the m-diamide compound. The reactions are almost quantitative with few by-products. Cryogenic and high-temperature reactions are not used. The introduction of bromine atoms at specific sites can be achieved in the final step. The preparation method has high yield and is more suitable for industrial production.Type: GrantFiled: April 13, 2020Date of Patent: November 23, 2021Assignee: CAC Nantong Chemical Co., LTDInventors: Jintao Zhu, Liang Lv, Chaoqun Huang, Liangming Luo, Rong Zhang
-
Publication number: 20210122706Abstract: The present disclosure provides a bromination method for m-diamide compounds comprising reacting a compound represented by formula I with a brominating reagent in the presence of an oxidant to obtain a brominated product represented by formula II. The method adopts a special design of brominating reagents and reaction conditions to introduce a bromine atom at a specific site of the m-diamide compound, with 87.9 to 99.5% yield of a brominated product obtained by the reaction and higher than 91.8% purity. Therefore, the bromination method has a simple route, mild reaction conditions, high efficiency, and does not require complicated and cumbersome post-treatment processes; furthermore, raw materials used for the bromination reaction are readily available, costs of the brominating reagent are low, and the brominated product finally obtained has high yield and high purity, thus the method is a novel one with a broad application prospect.Type: ApplicationFiled: April 7, 2020Publication date: April 29, 2021Inventors: Jintao ZHU, Liang LV, Chaoqun HUANG, Liangming LUO, Rong ZHANG
-
Publication number: 20210122707Abstract: The present disclosure provides a preparation method for m-diamide compounds. The method includes the following steps: 2-fluoro-3-nitrobenzoyl chloride and 4-(perfluoropropane-2-yl)-2-(trifluoromethyl)aniline are subjected to a condensation reaction, followed by a reduction reaction and an alkylation reaction to give 2-fluoro-3-(alkylamino)-N-(4-(perfluoropropane-2-yl)-2-(trifluoromethyl)phenyl)benzamide, which reacts with an acyl chloride compound to give 2-fluoro-3-(alkylbenzamido)-N-(4-(perfluoropropane-2-yl)-2-(trifluoromethyl)phenyl)benzamide, which is finally brominated to obtain the m-diamide compound. The reactions are almost quantitative with few by-products. Cryogenic and high-temperature reactions are not used. The introduction of bromine atoms at specific sites can be achieved in the final step. The preparation method has high yield and is more suitable for industrial production.Type: ApplicationFiled: April 13, 2020Publication date: April 29, 2021Inventors: Jintao ZHU, Liang LV, Chaoqun HUANG, Liangming LUO, Rong ZHANG
-
Patent number: 10981861Abstract: The present disclosure provides a bromination method for m-diamide compounds comprising reacting a compound represented by formula I with a brominating reagent in the presence of an oxidant to obtain a brominated product represented by formula II. The method adopts a special design of brominating reagents and reaction conditions to introduce a bromine atom at a specific site of the m-diamide compound, with 87.9 to 99.5% yield of a brominated product obtained by the reaction and higher than 91.8% purity. Therefore, the bromination method has a simple route, mild reaction conditions, high efficiency, and does not require complicated and cumbersome post-treatment processes; furthermore, raw materials used for the bromination reaction are readily available, costs of the brominating reagent are low, and the brominated product finally obtained has high yield and high purity, thus the method is a novel one with a broad application prospect.Type: GrantFiled: April 7, 2020Date of Patent: April 20, 2021Assignee: Chang Sha Jia Qiao Biotech CO., LTD.Inventors: Jintao Zhu, Liang Lv, Chaoqun Huang, Liangming Luo, Rong Zhang
-
Patent number: 10844005Abstract: Provided is a method for preparing an N-cyclopropylmethyl aniline compound, which comprises reacting a compound represented by Formula IV with cyclopropyl formaldehyde in the presence of metal zinc and an acid to generate an N-cyclopropylmethyl aniline compound represented by Formula I. The method of the present disclosure has mild reaction conditions, short reaction time, a high yield, simple processes, simple operations and low costs, and is more applicable to industrial production.Type: GrantFiled: April 1, 2020Date of Patent: November 24, 2020Assignee: CHANG SHA JIA QIAO BIOTECH CO., LTD.Inventors: Liangming Luo, Chaoqun Huang, Jintao Zhu, Zheng Luo, Rong Zhang
-
Patent number: 10748489Abstract: A pixel driving circuit and a driving method therefor are provided. The pixel driving circuit includes a turn-on voltage acquiring device, a compensation device, a light-emitting controller, a data writing device, a driving transistor and a light emitting device. The turn-on voltage acquiring device acquires a turn-on voltage of the light emitting device and generates a compensation signal according to the turn-on voltage; the data writing device provides a data voltage to the gate of the driving transistor; the light-emitting controller provides a first operating voltage to a first electrode of the driving transistor; and the compensation device generates a control signal according to the compensation signal, the data voltage and the threshold voltage of the driving transistor and provides the control signal to the gate of the driving transistor; the driving transistor outputs a driving current to the light emitting device.Type: GrantFiled: December 21, 2018Date of Patent: August 18, 2020Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Jie Ling, Feng Liu, Wenjian Wang, Liangming Luo
-
Publication number: 20190244568Abstract: A pixel driving circuit and a driving method therefor are provided. The pixel driving circuit includes a turn-on voltage acquiring device, a compensation device, a light-emitting controller, a data writing device, a driving transistor and a light emitting device. The turn-on voltage acquiring device acquires a turn-on voltage of the light emitting device and generates a compensation signal according to the turn-on voltage; the data writing device provides a data voltage to the gate of the driving transistor; the light-emitting controller provides a first operating voltage to a first electrode of the driving transistor; and the compensation device generates a control signal according to the compensation signal, the data voltage and the threshold voltage of the driving transistor and provides the control signal to the gate of the driving transistor; the driving transistor outputs a driving current to the light emitting device.Type: ApplicationFiled: December 21, 2018Publication date: August 8, 2019Inventors: Jie LING, Feng LIU, Wenjian WANG, Liangming LUO
-
Publication number: 20180196188Abstract: A backlight module, a fabricating method thereof, and a two-sided display device are provided. The backlight module includes a first transflective unit, a second transflective unit, and a bidirectional backlight source disposed between the first transflective unit and the second transflective unit. The bidirectional backlight source is configured to emit light both in a direction toward the first transflective unit and in a direction toward the second transflective unit, and is configured to transmit light from the direction of the first transflective unit and light from the direction of the second transflective unit. The first transflective unit is configured to transmit light in a first polarization direction and reflect light in a second polarization direction, the second transflective unit is configured to transmit light in the second polarization direction and reflect light in the first polarization direction, and the first polarization direction is perpendicular to the second polarization direction.Type: ApplicationFiled: January 6, 2016Publication date: July 12, 2018Inventors: Kai Yan, Liangming Luo, Woong Kim, Zhanchang Bu