Patents by Inventor Qinghua Duan
Qinghua Duan 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).
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Publication number: 20230211309Abstract: An apparatus for preparing polyalpha-olefins includes a mixing unit, a microchannel reaction unit, a high-pressure separation unit, a low-pressure separation unit, a gas circulation unit, a post-treatment unit and a pressure control unit, the mixing unit, the microchannel reaction unit, the high-pressure separation unit, the low-pressure separation unit that are successively connected. The gas circulation unit, the microchannel reaction unit is provided with the BF3 gas inlet, the mixing unit is provided with the auxiliary feed inlet, and the olefin raw material inlet, the gas circulation unit is connected with the BF3 gas inlet, the low-pressure separation unit is further connected with the post-treatment unit, and the high-pressure separation unit, the pressure control unit, and the gas circulation unit are further successively connected.Type: ApplicationFiled: April 20, 2021Publication date: July 6, 2023Inventors: Shuo SU, Xin CHENG, Bing XU, Qinghua DUAN, Jiayao YAO, Zuoxin HUANG, Xiaojin TANG, Tao HUANG, Ying HAN
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Publication number: 20230167204Abstract: An apparatus for preparing polyalpha-olefins has an input unit (1), a microchannel reactor (2), and a post-treatment unit (3) that are successively connected. The input unit has a mixer and/or pipeline(s) for delivering an olefin raw material, an auxiliary feed and a BF3 catalyst to the microchannel reactor (2). The apparatus and process that utilizes the apparatus allow flexible and rapid mixing of the catalyst, the auxiliary feed and the olefin raw material, and have the advantages of high polymerization reaction speed, good mass and heat transfer effects, high reaction conversion, good product selectivity and excellent performance, thereby being suitable for large-scale industrial production.Type: ApplicationFiled: April 20, 2021Publication date: June 1, 2023Inventors: Xin CHENG, Shuo SU, Bing XU, Zuoxin HUANG, Xiaojin TANG, Tao HUANG, Ying HAN, Qinghua DUAN, Jiayao YAO
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Publication number: 20230012456Abstract: An ester compound which can be used as the additive of the lubricating oil or the base oil of the lubricating oil, and a process for preparing the same and use thereof are provided. The ester has excellent viscosity-temperature properties and low-temperature properties and can be used as the base oil of the lubricating oil. In addition, the ester compound has excellent viscosity-temperature properties and low-temperature properties as the viscosity index improver, can significantly reduce the wear scar diameter of the base oil as the anti-wear agent, can significantly reduce the friction coefficient of the base oil as the friction modifier, and exhibits excellent anti-wear and anti-friction properties.Type: ApplicationFiled: October 23, 2020Publication date: January 12, 2023Inventors: Yao ZHANG, Kun YU, Ruiyun MAO, Qinghua DUAN, Yong LI
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Patent number: 11028334Abstract: A gradient copolymer comprises or consists of n polymer components. The n polymer components each independently represents an addition polymer of a monomer of the formula (I), and/or a mixture thereof, or the n polymer components each independently comprises or consists essential of one or more structural units represented by the formula (I-1), The symbol n represents an integer within the closed interval [5, ?]. The average side chain carbon number of the i-th polymer component as determined according to the nuclear magnetic resonance method is expressed as Xi, with the symbol i representing an arbitrary integer from 1 to n, the relationship X1<X2< . . . <Xn?1<Xn holds.Type: GrantFiled: June 27, 2017Date of Patent: June 8, 2021Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPECInventors: Yao Zhang, Qinghua Duan, Kecheng Wei, Yinong Liu, Hongwei Sun
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Patent number: 10968313Abstract: The present invention relates to an amino polymer, its main chain is attached via a —O— group to a structure represented by the following formula (I). The present invention also relates to a process for producing said amino polymer and to its use as fuel oil detergent. Compared with the prior art, the fuel oil detergent of the present invention has the advantages such as a lower manufacturing cost and an improved deposit formation inhibition performance. In formula (I), groups and values are defined as described in the description.Type: GrantFiled: November 28, 2016Date of Patent: April 6, 2021Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPECInventors: Xin Cheng, Jianrong Zhang, Zuoxin Huang, Qinghua Duan
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Patent number: 10822359Abstract: The present invention relates to a benzotriazole derivative, a preparation process thereof and the use thereof in preparation of the lubricating oil composition. The structure of the benzotriazole derivative of the present invention is shown by general formula (I). The benzotriazole derivative of the present invention, as the anti-wear additive for lubricating oil, not only has an excellent extreme pressure anti-wear property, but also has one or more excellent properties of thermal oxidation stability, corrosion resistance, rust resistance and anti-friction performance. In the general formula (I), each of the group(s) and the number(s) are defined as in the description.Type: GrantFiled: April 25, 2017Date of Patent: November 3, 2020Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPECInventors: Shuo Su, Jun Long, Qinghua Duan, Hui Zhang
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Publication number: 20190169521Abstract: A gradient copolymer comprises or consists of n polymer components. The n polymer components each independently represents an addition polymer of a monomer of the formula (I), and/or a mixture thereof, or the n polymer components each independently comprises or consists essential of one or more structural units represented by the formula (I-1), The symbol n represents an integer within the closed interval [5, ?]. The average side chain carbon number of the i-th polymer component as determined according to the nuclear magnetic resonance method is expressed as Xi, with the symbol i representing an arbitrary integer from 1 to n, the relationship X1<X2< . . . <Xn?1<Xn holds.Type: ApplicationFiled: June 27, 2017Publication date: June 6, 2019Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEInventors: Yao ZHANG, Qinghua DUAN, Kecheng WEI, Yinong LIU, Hongwei SUN
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Publication number: 20190106446Abstract: The present invention relates to a benzotriazole derivative, a preparation process thereof and the use thereof in preparation of the lubricating oil composition. The structure of the benzotriazole derivative of the present invention is shown by general formula (I). The benzotriazole derivative of the present invention, as the anti-wear additive for lubricating oil, not only has an excellent extreme pressure anti-wear property, but also has one or more excellent properties of thermal oxidation stability, corrosion resistance, rust resistance and anti-friction performance. In the general formula (I), each of the group(s) and the number(s) are defined as in the description.Type: ApplicationFiled: April 25, 2017Publication date: April 11, 2019Inventors: Shuo SU, Jun LONG, Qinghua DUAN, Hui ZHANG
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Publication number: 20180362710Abstract: The present invention relates to an amino polymer, its main chain is attached via a —O— group to a structure represented by the following formula (I). The present invention also relates to a process for producing said amino polymer and to its use as fuel oil detergent. Compared with the prior art, the fuel oil detergent of the present invention has the advantages such as a lower manufacturing cost and an improved deposit formation inhibition performance. In formula (I), groups and values are defined as described in the description.Type: ApplicationFiled: November 28, 2016Publication date: December 20, 2018Inventors: Xin CHENG, Jianrong ZHANG, Zuoxin HUANG, Qinghua DUAN
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Patent number: 9593290Abstract: This invention relates to a lubricating oil composition and production thereof. The lubricating oil composition comprises a Mannich base represented by the following formula (III) (wherein A and R2 are as defined in the specification) and a lubricant base oil. The lubricating oil composition according to this invention exhibits excellent cleansing and dispersing performance and excellent anticorrosion performance.Type: GrantFiled: April 25, 2013Date of Patent: March 14, 2017Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING SINOPECInventors: Shihao Xin, Xin Xie, Zuoxin Huang, Qinghua Duan, Zhiqiang Wu, Lihua Wang
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Patent number: 9587198Abstract: This invention relates to a Mannich base, production and use thereof in producing a detergent. The Mannich base is represented by the following formula (III), wherein A and R2 are as defined in the specification. The Mannich base can be used to produce a detergent and a fuel oil composition exhibiting excellent deposit formation suppressing performance and excellent anticorrosion performance.Type: GrantFiled: April 25, 2013Date of Patent: March 7, 2017Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPECInventors: Shihao Xin, Qinghua Duan, Zuoxin Huang
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Patent number: 9512380Abstract: This invention relates to a novel hindered phenol compound of Formula (I) (wherein the groups R and R? are as defined in the specification), preparation thereof and use thereof as an antioxidant. By using the hindered phenol compound of this invention as an antioxidant, it is possible to produce a lubricant oil composition exhibiting excellent oxidation resistance at elevated temperatures.Type: GrantFiled: June 5, 2014Date of Patent: December 6, 2016Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPECInventors: Shuo Su, Jun Long, Qinghua Duan, Han Zhou, Zhiqiang Wu, Xinhua Li, Yi Zhao, Xiaoguang Zhao
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Publication number: 20150353858Abstract: This invention relates to a novel hindered phenol compound of Formula (I) (wherein the groups R and R? are as defined in the specification), preparation thereof and use thereof as an antioxidant. By using the hindered phenol compound of this invention as an antioxidant, it is possible to produce a lubricant oil composition exhibiting excellent oxidation resistance at elevated temperatures.Type: ApplicationFiled: June 5, 2014Publication date: December 10, 2015Inventors: Shuo SU, Jun LONG, Qinghua DUAN, Han ZHOU, Zhiqiang WU, Xinhua LI, Yi ZHAO, Xiaoguang ZHAO
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Publication number: 20150126420Abstract: This invention relates to a lubricating oil composition and production thereof. The lubricating oil composition comprises a Mannich base represented by the following formula (III) (wherein A and R2 are as defined in the specification) and a lubricant base oil. The lubricating oil composition according to this invention exhibits excellent cleansing and dispersing performance and excellent anticorrosion performance.Type: ApplicationFiled: April 25, 2013Publication date: May 7, 2015Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING SINOPECInventors: Shihao Xin, Xin Xie, Zuoxin Huang, Qinghua Duan, Zhiqiang Wu, Lihua Wang
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Publication number: 20150121747Abstract: This invention relates to a Mannich base, production and use thereof in producing a detergent. The Mannich base is represented by the following formula (III), wherein A and R2 are as defined in the specification. The Mannich base can be used to produce a detergent and a fuel oil composition exhibiting excellent deposit formation suppressing performance and excellent anticorrosion performance.Type: ApplicationFiled: April 25, 2013Publication date: May 7, 2015Applicant: CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Shihao Xin, Qinghua Duan, Zuoxin Huang
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Patent number: 8697616Abstract: The present invention relates to an organic molybdenum additive and its preparation method, and a lubricating composition comprising said additive, and use of said additive and its lubricating composition in the aspect of improving antiwear and antifriction property of oil products. The organic molybdenum additive according to the present invention is characterized in that it is prepared by reacting several kinds of feedstock as follows: a polylol ester of p-hydroxybenzene alkyl acid, an inorganic molybdenum compound and an aliphatic amine and/or an aromatic amine and/or an amide. The organic molybdenum additive of the present invention has excellent antiwear and/or antifriction property.Type: GrantFiled: February 28, 2007Date of Patent: April 15, 2014Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, SinopecInventors: Wei Xu, Kecheng Wei, Qinghua Duan, Fuhui Zhang
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Publication number: 20090156443Abstract: The present invention relates to an organic molybdenum additive and its preparation method, and a lubricating composition comprising said additive, and use of said additive and its lubricating composition in the aspect of improving antiwear and antifriction property of oil products. The organic molybdenum additive according to the present invention is characterized in that it is prepared by reacting several kinds of feedstock as follows: a polylol ester of p-hydroxybenzene alkyl acid, an inorganic molybdenum compound and an aliphatic amine and/or an aromatic amine and/or an amide. The organic molybdenum additive of the present invention has excellent antiwear and/or antifriction property.Type: ApplicationFiled: February 28, 2007Publication date: June 18, 2009Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING SINOPECInventors: Wei Xu, Kecheng Wei, Qinghua Duan, Fuhui Zhang