Patents by Inventor Linlin Duan
Linlin 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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Patent number: 11702609Abstract: A method for improving lubricating performance of lubricating oils is provided and includes: adding copper phosphate with a porous structure into a base oil, a mass percent of the copper phosphate with the porous structure to the base oil is 0.0001% ˜50%, the porous structure is one of a foam porous structure and a porous nanoflower structure. The copper phosphate with the porous structure is obtained by adding a divalent copper salt solution into an alkaline disodium hydrogen phosphate solution or alkaline phosphoric acid buffer solution and then separating a precipitate. When a ratio of a concentration of a divalent copper ion to that of a phosphate ion is 1:0.1 to 400, the porous structure is porous foam or nanoflower. The porous structure can be well dispersed in the lubricating oil for 1 hour. After adding the lubricating oil, excellent friction reduction and anti-wear is achieved.Type: GrantFiled: June 21, 2022Date of Patent: July 18, 2023Assignee: WUHAN RESEARCH INSTITUTE OF MATERIALS PROTECTIONInventors: Haitao Duan, Linlin Duan, Dan Jia, Shengpeng Zhan, Tian Yang, Jiesong Tu
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Patent number: 11225585Abstract: Disclosed are protective coating compositions having enhanced gloss retention properties formed by steps comprising: (i) providing one or more fluorocopolymers by copolymerization of (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these, (2) one or more vinyl ester monomer(s), and (3) one or more vinyl ether monomer(s), wherein at least a portion of said vinyl ether monomer is a hydroxyl group-containing vinyl ether monomer, wherein the copolymer preferably has a number average molecular weight of greater than about 10,000; (ii) providing a VOC containing carrier for said one or more fluorocopolymers; and (iii) providing a stabilizing agent comprising: a) a radical scavenger and b) an absorber of UV light; and (iv) combining said one or more fluorocopolymers with said carrier and said stabilizing agent to produce a polymeric coating composition.Type: GrantFiled: October 3, 2019Date of Patent: January 18, 2022Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Linlin Duan, Wanchao Jiang, Gang Xu, Siyuan Zhang, Rajiv Banavali, Zhe Ding, Shuwen Peng
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Publication number: 20210371561Abstract: Disclosed are copolymers formed by copolymerization of: (1) one or more hydrofluoroolefin monomer(s) such as hydrofluoropropenes, (2) one or more of an alkyl vinyl ether monomer(s) that are not substituted with a reactive group, and (3) one or more reactive group substituted, lower alkyl vinyl ether monomer(s) wherein the copolymer has a MWn of from about 1000 to about 6000 grams/mole and other advantageous properties.Type: ApplicationFiled: September 19, 2018Publication date: December 2, 2021Inventors: Gang XU, Min JIAN, Siyuan ZHANG, Linlin DUAN
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Patent number: 11015005Abstract: Disclosed are copolymers formed by copolymerization of: (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these, and preferably selected from 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, with said 1,3,3,3-tetrafluoropropene preferably comprising, consisting essentially of or consisting of trans-1,3,3,3-tetrafluoropropene, and combinations of these, and (2) one or more chlorofluoroethylene monomers, preferably chlorotrifluoroethylene (“CTFE”) monomers, wherein the mole ratio of monomer (1) to monomer (2) is preferably from about 30:1 to about 1:30.Type: GrantFiled: November 16, 2016Date of Patent: May 25, 2021Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Gang Xu, Siyuan Zhang, Wanchao Jiang, Linlin Duan, Zhe Ding
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Publication number: 20200199394Abstract: Disclosed are protective coating compositions having enhanced gloss retention properties formed by steps comprising: (i) providing one or more fluorocopolymers by copolymerization of (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these, (2) one or more vinyl ester monomer(s), and (3) one or more vinyl ether monomer(s), wherein at least a portion of said vinyl ether monomer is a hydroxyl group-containing vinyl ether monomer, wherein the copolymer preferably has a number average molecular weight of greater than about 10,000; (ii) providing a VOC containing carrier for said one or more fluorocopolymers; and (iii) providing a stabilizing agent comprising: a) a radical scavenger and b) an absorber of UV light; and (iv) combining said one or more fluorocopolymers with said carrier and said stabilizing agent to produce a polymeric coating composition.Type: ApplicationFiled: October 3, 2019Publication date: June 25, 2020Inventors: Linlin Duan, Wanchao Jiang, Gang Xu, Siyuan Zhang, Rajiv Banavali, Zhe Ding, Shewen Shuwen Peng
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Patent number: 10435580Abstract: Disclosed are protective coating compositions having enhanced gloss retention properties formed by steps comprising: (i) providing one or more fluorocopolymers by copolymerization of (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these, (2) one or more vinyl ester monomer(s), and (3) one or more vinyl ether monomer(s), wherein at least a portion of said vinyl ether monomer is a hydroxyl group-containing vinyl ether monomer, wherein the copolymer preferably has a number average molecular weight of greater than about 10,000; (ii) providing a VOC containing carrier for said one or more fluorocopolymers; and (iii) providing a stabilizing agent comprising: a) a radical scavenger and b) an absorber of UV light; and (iv) combining said one or more fluorocopolymers with said carrier and said stabilizing agent to produce a polymeric coating composition.Type: GrantFiled: November 16, 2016Date of Patent: October 8, 2019Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Linlin Duan, Wanchao Jiang, Gang Xu, Siyuan Zhang, Rajiv Banavali, Zhe Ding, Shuwen Peng
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Publication number: 20190169338Abstract: Copolymers formed by copolymerization of: (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these; (2) one or more aromatic vinyl ester monomer(s); (3) one or more vinyl ester monomer(s); and (4) one or more vinyl ether monomer(s), wherein at least a portion of said vinyl ether monomer is a hydroxyl group-containing vinyl ether monomer.Type: ApplicationFiled: November 26, 2018Publication date: June 6, 2019Inventors: Gang Xu, Wanchao Jiang, Siyuan Zhang, Linlin Duan, Zhe Ding
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Publication number: 20190169337Abstract: A process of producing an endcapped fluorocopolymer including the forming of a fluorocopolymer by copolymerization of: (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these; (2) one or more vinyl ester monomer(s); and (3) one or more vinyl ether monomer(s), wherein at least a portion of said vinyl ether monomer is a hydroxyl group-containing vinyl ether monomer; and at the end of copolymerization, reacting a radical transfer agent, preferably methanol, with the fluorocopolymer to produce the endcapped fluorocopolymer, preferably containing ether end groups.Type: ApplicationFiled: November 26, 2018Publication date: June 6, 2019Inventors: Gang Xu, Wanchao Jiang, Siyuan Zhang, Linlin Duan, Zhe Ding
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Publication number: 20180112019Abstract: Disclosed are LEDs and LED packages, and methods of making them, having improved resistance to infiltration by chemical entities comprising providing a coating on at least a portion of the LED chip or an LED chip package formed by co-polymerization of: (a) one or more hydrofluoroolefin monomer(s) selected from the group consisting of tetrafluoroethylene, hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these; (b) optionally one or more chlorofluoroethylene monomers; (c) optionally one or more vinyl ester monomer(s); and (d) optionally one or more vinyl ether monomer(s), wherein at least a portion of said vinyl ether monomer is preferably a hydroxyl group-containing vinyl ether monomer and preferably at least one of (b) and (d) is present.Type: ApplicationFiled: May 3, 2017Publication date: April 26, 2018Inventors: Ya Qun Lin, Wanchao Jiang, Gang Xu, Linlin Duan, Siyuan Zhang, Zhe Ding
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Publication number: 20170145132Abstract: Disclosed are copolymers formed by copolymerization of: (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these, and preferably selected from 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, with said 1,3,3,3-tetrafluoropropene preferably comprising, consisting essentially of or consisting of trans-1,3,3,3-tetrafluoropropene, and combinations of these, and (2) one or more chlorofluoroethylene monomers, preferably chlorotrifluoroethylene (“CTFE”) monomers, wherein the mole ratio of monomer (1) to monomer (2) is preferably from about 30:1 to about 1:30.Type: ApplicationFiled: November 16, 2016Publication date: May 25, 2017Inventors: Gang Xu, Siyuan Zhang, Wanchao Jiang, Linlin Duan, Zhe Ding
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Publication number: 20170145241Abstract: Disclosed are protective coating compositions having enhanced gloss retention properties formed by steps comprising: (i) providing one or more fluorocopolymers by copolymerization of (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these, (2) one or more vinyl ester monomer(s), and (3) one or more vinyl ether monomer(s), wherein at least a portion of said vinyl ether monomer is a hydroxyl group-containing vinyl ether monomer, wherein the copolymer preferably has a number average molecular weight of greater than about 10,000; (ii) providing a VOC containing carrier for said one or more fluorocopolymers; and (iii) providing a stabilizing agent comprising: a) a radical scavenger and b) an absorber of UV light; and (iv) combining said one or more fluorocopolymers with said carrier and said stabilizing agent to produce a polymeric coating composition.Type: ApplicationFiled: November 16, 2016Publication date: May 25, 2017Inventors: Linlin Duan, Wanchao Jiang, Gang Xu, Siyuan Zhang, Rajiv Banavali, Zhe Ding, Shuwen Peng