Patents by Inventor Yiyong He

Yiyong He 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: 11786891
    Abstract: Quaternary ammonium tribromides and quaternary phosphonium tribromides are recovered from an organic solvent by washing with an aqueous hydrazine solution. The hydrazine reacts to form nitrogen, hydrobromic acid and a quaternary ammonium or quaternary phosphonium monobromide. The hydrobromic acid and quaternary ammonium or quaternary phosphonium migrate to the aqueous phase, thereby effecting the removal of the tribromides from the organic solvent. The hydrobromic acid can be neutralized with a quaternary ammonium or quaternary phosphonium hydroxide to produce a quaternary ammonium or quaternary phosphonium monobromide. The monobromides produced can be reacted with elemental bromine to regenerate a tribromide brominating agent.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: October 17, 2023
    Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC
    Inventors: Longyan Liao, Shari Kram, Mark Rickard, Yiyong He, John Hull, Jr.
  • Patent number: 11680227
    Abstract: A method of washing glassware is provided including: providing automatic dishwashing apparatus; providing soiled glassware; placing soiled glassware in automatic dishwashing apparatus; providing wash water; providing rinse water; selecting anhydrous mixed powder or mixed granule comprising: 2.5-5 wt % of oxidized maltodextrin, wherein oxidized maltodextrin has Degree of Oxidation of 0.4-1.7; 10-25 wt % of amino acid based builder; 20-75 wt % of additional builder, wherein additional builder includes at least one of sodium citrate, sodium carbonate and sodium percarbonate; 2.5-7.5 wt % of bleach activator; 0.5-10 wt % of nonionic surfactant; 0.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: June 20, 2023
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Lin Wang, Robin P. Ziebarth, Matthew E. Belowich, Scott Backer, Paul Mercando, Yiyong He
  • Publication number: 20220403296
    Abstract: A method of washing glassware is provided including: providing automatic dishwashing apparatus; providing soiled glassware; placing soiled glassware in automatic dishwashing apparatus; providing wash water; providing rinse water; selecting anhydrous mixed powder or mixed granule comprising: 2.5-5 wt % of oxidized maltodextrin, wherein oxidized maltodextrin has Degree of Oxidation of 0.4-1.7; 10-25 wt % of amino acid based builder; 20-75 wt % of additional builder, wherein additional builder includes at least one of sodium citrate, sodium carbonate and sodium percarbonate; 2.5-7.5 wt % of bleach activator; 0.5-10 wt % of nonionic surfactant; 0.
    Type: Application
    Filed: August 26, 2022
    Publication date: December 22, 2022
    Inventors: Lin Wang, Robin P. Ziebarth, Matthew E. Belowich, Scott Backer, Paul Mercando, Yiyong He
  • Patent number: 11525045
    Abstract: Chemically modified polyesters, foamable compositions thereof that form low density foams, and methods of making the foamable compositions and foams are disclosed. The compositions comprise an amorphous copolyester, or amorphous co-polyesterpolycarbonate or amorphous co-polyesterpolyether or combination thereof. Additionally, uses for the low density foams are disclosed.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: December 13, 2022
    Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, INC.
    Inventors: Michal Elizabeth Porter, Mark Alan Barger, Yiyong He, St├ęphane Costeux, Gerald F Billovits, Wenyi Huang, Edoardo Nicoli
  • Publication number: 20220370994
    Abstract: Quaternary ammonium tribromides and quaternary phosphonium tribromides are recovered from an organic solvent by washing with an aqueous hydrazine solution. The hydrazine reacts to form nitrogen, hydrobromic acid and a quaternary ammonium or quaternary phosphonium monobromide. The hydrobromic acid and quaternary ammonium or quaternary phosphonium migrate to the aqueous phase, thereby effecting the removal of the tribromides from the organic solvent. The hydrobromic acid can be neutralized with a quaternary ammonium or quaternary phosphonium hydroxide to produce a quaternary ammonium or quaternary phosphonium monobromide. The monobromides produced can be reacted with elemental bromine to regenerate a tribromide brominating agent.
    Type: Application
    Filed: May 19, 2022
    Publication date: November 24, 2022
    Inventors: Longyan LIAO, Shari KRAM, Mark RICKARD, Yiyong HE, John HULL, JR.
  • Publication number: 20220363946
    Abstract: A liquid applied, silicone-based air and water barrier coating composition and its use as a silicone-based air and water barrier is provided. The barrier is generally vapour permeable and suitable for the construction industry. The liquid coating composition generally has a shelf-life of at least 15 months. The liquid coating composition comprises: (i) a crosslinked polysiloxane dispersion comprising (c) a surfactant and (d) water; (ii) one or more rheology modifiers in an amount of from 0.25 to 5 wt. % of the composition; and (iii) an acidic pH stable colloidal silica in an amount of from 15 to 30 wt. % of the composition; and optionally (iv) one or more stabilizers.
    Type: Application
    Filed: July 1, 2020
    Publication date: November 17, 2022
    Inventors: Tirtha CHATTERJEE, Milton H. REPOLLET-PEDROSA, Michael P. TATE, Yiyong HE, Andrea WATTS
  • Publication number: 20220363945
    Abstract: A liquid applied, silicone-based air and water barrier coating composition and its use as a silicone-based air and water barrier is provided. The barrier is generally vapour permeable and suitable for the construction industry. The liquid coating composition generally has a shelf-life of at least 9 months. The liquid coating composition comprises: (i) a crosslinked polysiloxane dispersion comprising (c) a surfactant and (d) water; (ii) a combination of rheology modifiers and at least one of the following ingredients: (iii) one or more fillers and/or (iv) one or more stabilizers.
    Type: Application
    Filed: July 1, 2020
    Publication date: November 17, 2022
    Inventors: Michael P. TATE, Zhifeng BAI, Jodi M. MECCA, Tirtha CHATTERJEE, Yiyong HE, Michael BRASSEUR, Sudhakar BALIJEPALLI, John J. RABASCO
  • Publication number: 20210380613
    Abstract: A method for preparing phosphine-borane complexes from aryldihalophosphine includes mixing sodium borohydride, a solvent having at least 50 vol % glycol ethers, and the aryldihalophosphine to obtain a solution. The solution is maintained at a reaction temperature for a duration of time to obtain the phosphine-borane complexes. The solvent may include 1,2-dimethoxyethane and tetrahydrofuran. A ratio of tetrahydrofuran to 1,2-dimethoxyethane in the solvent may be from 0.1:1.0 to 2.5:1.0.
    Type: Application
    Filed: September 18, 2019
    Publication date: December 9, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Siyu Tu, Jessica L. Klinkenberg, Yiyong He, Xiaoyun Chen, Haoquan Li, Matthew S. Remy
  • Publication number: 20210238502
    Abstract: An anhydrous mixed powder or mixed granule is provided including 1 to 10 wt % of oxidized maltodextrin; 10 to 60 wt % of an amino acid based builder; 1 to 87.7 wt % of an additional builder selected from the group consisting of carbonate builders, citrate builders, silicate builders, amino acid derived builders and mixtures thereof; a bleach activator; a surfactant; 0.1 to 7 wt % of a phosphonate; enzyme; 0 to 75 wt % of a filler; and <1 wt % water.
    Type: Application
    Filed: May 9, 2019
    Publication date: August 5, 2021
    Inventors: Lin Wang, Robin P. Ziebarth, Matthew E. Belowich, Scott Backer, Paul Mercando, Yiyong He
  • Publication number: 20200308363
    Abstract: Chemically modified polyesters, foamable compositions thereof that form low density foams, and methods of making the foamable compositions and foams are disclosed. The compositions comprise an amorphous copolyester, or amorphous co-polyesterpolycarbonate or amorphous co-polyesterpolyether or combination thereof. Additionally, uses for the low density foams are disclosed.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Inventors: Michal Elizabeth Porter, Mark Alan Barger, Yiyong He, Stephane Costeux, Gerald F. Billovits, Wenyi Huang, Edoardo Nicoli
  • Patent number: 10717817
    Abstract: A process to prepare polycarbamate comprising adding urea to a polyol in the presence of at least one catalyst selected from the group consisting of compounds having the following formula MmZn; wherein M is a divalent metal, and Z is an anionic functionality or a functionality capable of forming a covalent bond with M and wherein n times a valence number of Z equals X and m times two equals Y wherein the absolute value of X equals the absolute value of Y is provided. Also provided are a polycarbamate produced according to the process and a coating composition comprising the polycarbamate.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: July 21, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Xinrui Yu, Yiyong He, John W. Hull, Jr., Daryoosh Beigzadeh, Duane R. Romer, Thomas P. Clark, Peter Margl, Congcong Lu
  • Patent number: 10604626
    Abstract: A first process to produce polycarbamate comprising providing urea in liquid form; and adding the liquid urea to a polyol is provided. A second process for producing polycarbamate comprising adding solid urea to a polyol in liquid form to form a reaction mixture is provided. Also provided is a reaction product produced by the first process or second process.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: March 31, 2020
    Assignee: Dow Global Technologies, LLC
    Inventors: Xinrui Yu, Yiyong He, John W. Hull, Jr., Paul Foley
  • Patent number: 10508232
    Abstract: The present invention provides polymer composites, such as films, having dispersed therein quantum dots, wherein the polymer comprises (b) polymerized units of a first compound comprising from one to 6 thiol groups, the compound having a molecular weight from 300 to 20,000 and having at least one continuous acyclic hydrocarbyl chain of at least three carbon atoms, or, preferably, at least 5 carbon atoms; and (c) polymerized units of a second compound having a molecular weight from 100 to 750 and comprising at least two polymerizable vinyl groups as part of a (meth)acrylate ester group or attached directly to an aromatic ring and, wherein the molecular weight of the first compound minus the molecular weight of the second compound is at least 100. The polymer composites provide more stably dispersed and durable quantum dot compositions for use in, for example, display devices.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: December 17, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Jessica Ye Huang, Liang Chen, Yiyong He, Xiaoyun Chen
  • Patent number: 10343983
    Abstract: A polycarbamate comprising having less than 5 wt % total of biuret, cyanuric acid, and polyallophanate; and has a Gardner level of equal or greater than 3 is provided. A coating comprising the polycarbamate is also provided.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: July 9, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Xinrui Yu, Yiyong He, John W. Hull, Jr., Daryoosh Beigzadeh, Duane R. Romer, Thomas P. Clark, Peter Margl, Congcong Lu
  • Patent number: 10196484
    Abstract: A method for producing polycarbamate comprising: contacting at least one carbamylating agent with a polyol in the presence of a carbamylation catalyst to form a reaction mixture having an acid value from 3 to 50 mg KOH/g dry polyol is provided. Further provided are a polycarbamate produced by the method and a coating comprising the polycarbamate.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: February 5, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Gary E. Spilman, Congcong Lu, Daryoosh Beigzadeh, Jr., Yiyong He, Paul J. Popa, John N. Argyropoulos
  • Patent number: 10174163
    Abstract: A non-aqueous crosslinkable composition comprising a polyurea having a functionality of equal to or greater than 2; an aldehyde or acetal or hemiacetal thereof; and optionally one or more organic solvents is provided. Further provided is a crosslinked composition, a coating, articles including the coating and a method of making a non-aqueous crosslinkable composition.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: January 8, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Paul Foley, John N. Argyropoulos, Yiyong He
  • Patent number: 10131746
    Abstract: A process to prepare polycarbamate comprising adding urea to a polyol in the presence of at least one catalyst selected from the group consisting of compounds having the following formula MmZn; wherein M is a tetravalent metal, and Z is an anionic functionality or a functionality capable of forming a covalent bond with M and wherein n times a valence number of Z equals X and m times four equals Y wherein the absolute value of X equals the absolute value of Y is provided. Also provided are a polycarbamate produced according to the process and a coating composition comprising the polycarbamate.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: November 20, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: Xinrui Yu, Yiyong He, John W. Hull, Jr., Daryoosh Beigzadeh, Duane R. Romer, Thomas P. Clark, Peter Margl, Congcong Lu
  • Publication number: 20180265458
    Abstract: A process to prepare polycarbamate comprising adding urea to a polyol in the presence of at least one catalyst selected from the group consisting of compounds having the following formula MmZn; wherein M is a trivalent metal, and Z is an anionic functionality or a functionality capable of forming a covalent bond with M and wherein n times a valence number of Z equals X and m times three equals Y wherein the absolute value of X equals the absolute value of Y is provided. Also provided are a polycarbamate produced according to the process and a coating composition comprising the polycarbamate.
    Type: Application
    Filed: May 22, 2018
    Publication date: September 20, 2018
    Inventors: Xinrui Yu, Yiyong He, John W. Hull, JR., Daryoosh Beigzadeh, Duane R. Romer, Thomas P. Clark, Peter Margl, Congcong Lu
  • Publication number: 20180265774
    Abstract: The present invention provides polymer composites, such as films, having dispersed therein quantum dots, wherein the polymer comprises (b) polymerized units of a first compound comprising from one to 6 thiol groups, the compound having a molecular weight from 300 to 20,000 and having at least one continuous acyclic hydrocarbyl chain of at least three carbon atoms, or, preferably, at least 5 carbon atoms; and (c) polymerized units of a second compound having a molecular weight from 100 to 750 and comprising at least two polymerizable vinyl groups as part of a (meth)acrylate ester group or attached directly to an aromatic ring and, wherein the molecular weight of the first compound minus the molecular weight of the second compound is at least 100. The polymer composites provide more stably dispersed and durable quantum dot compositions for use in, for example, display devices.
    Type: Application
    Filed: January 26, 2018
    Publication date: September 20, 2018
    Inventors: Jessica Ye Huang, Liang Chen, Yiyong He, Xiaoyun Chen
  • Publication number: 20180258224
    Abstract: A process to prepare polycarbamate comprising adding urea to a polyol in the presence of at least one catalyst selected from the group consisting of compounds having the following formula MmZn; wherein M is a divalent metal, and Z is an anionic functionality or a functionality capable of forming a covalent bond with M and wherein n times a valence number of Z equals X and m times two equals Y wherein the absolute value of X equals the absolute value of Y is provided. Also provided are a polycarbamate produced according to the process and a coating composition comprising the polycarbamate.
    Type: Application
    Filed: May 16, 2018
    Publication date: September 13, 2018
    Inventors: Xinrui Yu, Yiyong He, John W. Hull, JR., Daryoosh Beigzadeh, Duane R. Romer, Thomas P. Clark, Peter Margl, Congcong Lu