Patents by Inventor Shao-Hua Guo

Shao-Hua Guo 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).

  • Publication number: 20050032634
    Abstract: A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.
    Type: Application
    Filed: September 16, 2004
    Publication date: February 10, 2005
    Inventors: Shao-Hua Guo, Shaotian Wang
  • Patent number: 6844402
    Abstract: A process for making olefin-acrylic copolymers is disclosed. The process comprises polymerizing an olefin and an acrylic monomer in the presence of an activator and a Group 8-10 late transition metal complex. The late transition metal catalyst contains an isoindoline ligand.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: January 18, 2005
    Assignee: Equistar Chemicals, LP
    Inventors: Jia-Chu Liu, Mark P. Mack, Shao-Hua Guo
  • Patent number: 6841506
    Abstract: A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: January 11, 2005
    Assignee: Equistar Chemicals, LP
    Inventors: Shao-Hua Guo, Shaotian Wang
  • Publication number: 20040214980
    Abstract: A UV-curable composition is disclosed. The composition comprises a crosslinking agent, a hydroxyalkyl acrylate or methacrylate, and an acrylic polyol. The crosslinking agent is selected from the group consisting of multifunctional isocyanates, melamines, and silanes. The acrylic polyol comprises recurring units of an allylic alcohol. The composition can be irradiated to be solidified and then fully cured by the urethane, melamine, or silane reactions. Alternatively, the composition can be cured by the urethane, melamine, or silane reactions, and then fully cured by radiation. The invention provides low VOC but high performance coatings. More importantly, the invention provides a UV-curable system without the need for acrylated oligomers.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 28, 2004
    Inventors: Daniel B. Pourreau, Shanti P. Patel, L. Joseph Junker, Wei Wang, Stephen H. Harris, Shao-Hua Guo
  • Publication number: 20040204311
    Abstract: A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.
    Type: Application
    Filed: March 5, 2004
    Publication date: October 14, 2004
    Applicant: Equistar Chemicals, LP
    Inventors: Shao-Hua Guo, Shaotian Wang
  • Patent number: 6710005
    Abstract: A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: March 23, 2004
    Assignee: Equistar Chemicals, LP
    Inventors: Shao-Hua Guo, Shaotian Wang
  • Publication number: 20030069440
    Abstract: A process for making acrylic polyols from allylic alcohols is disclosed. The process is performed essentially in the absence of styrene and in the absence of methyl acrylate or methacrylate. It comprises initially charging a reactor with an allylic alcohol, 0-75% of the total amount to be used of an acrylic monomer, and 0-100% of the total amount to be used of a free-radical initiator. The reaction mixture is heated to a temperature within the range of about 100° C. to about 250° C. The remaining acrylic monomer and initiator are gradually added into the reactor during the course of polymerization. The monomer conversion is greatly enhanced as a result of using essentially no styrene.
    Type: Application
    Filed: August 22, 2001
    Publication date: April 10, 2003
    Inventors: Shao-Hua Guo, Wei Wang, Daniel B. Pourreau
  • Publication number: 20020147292
    Abstract: A process for preparing vinyl aromatic-allylic alcohol copolymers, such as styrene-allyl alcohol (SAA) copolymers, is disclosed. The process is conducted in the presence of a solvent, which enables the preparation of copolymers having both low hydroxyl functionalities and low molecular weights. SAA copolymers produced by the process have an average hydroxyl functionality less than about 4.
    Type: Application
    Filed: February 14, 2001
    Publication date: October 10, 2002
    Inventors: Shao-Hua Guo, Wei Wang, Daniel B. Pourreau
  • Patent number: 6462117
    Abstract: Coating and ink compositions based on organic solvents that have negligible photochemical reactivity and methods for making them are disclosed. The organic solvents have calculated oxidation rate constants of less than about 1×1010 cm3/g·sec, and evaporation rates of not more than about 5 times that of n-butyl acetate. Coatings made by the method of the invention are used for wood, furniture, automotive, container, architectural, coil, aerosol, marine, transportation, industrial, ink, overprint varnish, and road-coating applications.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: October 8, 2002
    Assignee: Arco Chemical Technology L.P.
    Inventors: Daniel B. Pourreau, Shao-Hua Guo
  • Patent number: 6455657
    Abstract: A process for preparing vinyl aromatic-allylic alcohol copolymers, such as styrene-allyl alcohol (SAA) copolymers, is disclosed. The process is conducted in the presence of a solvent, which enables the preparation of copolymers having both low hydroxyl functionalities and low molecular weights. SAA copolymers produced by the process have an average hydroxyl functionality less than about 4.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: September 24, 2002
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Shao-Hua Guo, Wei Wang, Daniel B. Pourreau
  • Publication number: 20020115781
    Abstract: Coating and ink compositions based on organic solvents that have negligible photochemical reactivity and methods for making them are disclosed. The organic solvents have calculated oxidation rate constants of less than about 1×1010 cm3/g·sec, and evaporation rates of not more than about 5 times that of n-butyl acetate. Coatings made by the method of the invention are used for wood, furniture, automotive, container, architectural, coil, aerosol, marine, transportation, industrial, ink, overprint varnish, and road-coating applications.
    Type: Application
    Filed: April 10, 2001
    Publication date: August 22, 2002
    Applicant: ARCO Chemical Technology, L.P.
    Inventors: Daniel B. Pourreau, Shao-Hua Guo
  • Patent number: 6403714
    Abstract: A liquid epoxy-functional acrylic resin is disclosed. The resin comprises 10-90 wt % of recurring units of an epoxy-functional allylic monomer and 10-90 wt % of an acrylic monomer that has a homopolymer Tg less that 0° C. The epoxy-functional allylic monomer has the general structure: R is hydrogen, a C1-C10 aryl, or a C6-C12 aryl group; A is an oxyalkylene group; and n, which is an average number of oxyalkylene groups, is within the range of 0 to about 15.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: June 11, 2002
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Wei Wang, Daniel B. Pourreau, Shao-Hua Guo
  • Patent number: 6294607
    Abstract: An ultra-high solids coating composition is disclosed. The composition comprises a polyol blend of a liquid acrylic polyol and a resinous polyol. The polyol blend is crosslinked with a multifunctional isocyanate, melamine, or silane to form a variety of coatings. The coating composition has a significantly higher solid % than that is formulated from a single resin that has similar composition of the combination of the polyol blend. The coatings include less than about 35% by weight of an organic solvent.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: September 25, 2001
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Shao-Hua Guo, Daniel B. Pourreau, Wei Wang
  • Patent number: 6156861
    Abstract: Carbamate-functional allyl monomers and methods for making them are disclosed. The monomers, which are easy to prepare, readily polymerize with common ethylenic monomers to give low-molecular-weight resins without the need for solvents or chain-transfer agents. Coatings made from the resins should have good durability, good acid etch resistance, good mar resistance, high gloss, and high DOI.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: December 5, 2000
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Shao Hua Guo
  • Patent number: 6153713
    Abstract: A process for making hydroxy-functional resins based on acrylate, hydroxyalkylacrylate, and allyl monomers is disclosed. The key to the process is to add the hydroxyalkylacrylate monomer in an amount and manner effective to produce a resin that contains, without vacuum stripping, less than about 1 wt. % of residual unreacted allyl monomers. Eliminating the need to vacuum strip the allyl monomer reduces process costs and enables the synthesis of new resins. The hydroxy-functional resins are readily crosslinked with melamines, polyisocyanates, or epoxies to give thermoset polymers.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: November 28, 2000
    Assignee: ARCO Chemical Technology, L.P.
    Inventor: Shao-Hua Guo
  • Patent number: 6127500
    Abstract: Allylic copolymer resins and processes for making them are disclosed. The resins are made by copolymerizing an ethylenic monomer, a monofunctional allyl monomer, and a multifunctional allyl monomer under free-radical conditions. The multifunctional allyl monomer is used in an amount and manner effective to give a copolymer resin having a polydispersity (Mw/Mn) within the range of about 5 to about 30. The resins, which are easy to make with even bulk polymerization, are particularly valuable, for example, as toner resins, thermoset resins, reactive plasticizers, and rheology modifiers.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: October 3, 2000
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Shao Hua Guo, Daniel B. Pourreau
  • Patent number: 6103840
    Abstract: An improved process for making allylic/ethylenic copolymers is disclosed. Increasing the reaction temperature during addition of the ethylenic monomer/initiator mixture results in a substantial increase in the polymer yield obtained compared with the yield from a conventional process in which a constant temperature is used. Copolymers made by the process include valuable coating resins such as styrene-allyl alcohol and hydroxy-functional acrylic copolymers.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: August 15, 2000
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Shao Hua Guo
  • Patent number: 6075108
    Abstract: Carbamate-functional allyl monomers and methods for making them are disclosed. The monomers, which are easy to prepare, readily polymerize with common ethylenic monomers to give low-molecular-weight resins without the need for solvents or chain-transfer agents. Coatings made from the resins should have good durability, good acid etch resistance, good mar resistance, high gloss, and high DOI.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: June 13, 2000
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Shao Hua Guo
  • Patent number: 5986031
    Abstract: Allylic copolymer resins and processes for making them are disclosed. The resins are made by copolymerizing an ethylenic monomer, a monofunctional allyl monomer, and a multifunctional allyl monomer under free-radical conditions. The multifunctional allyl monomer is used in an amount and manner effective to give a copolymer resin having a polydispersity (Mw/Mn) within the range of about 5 to about 30. The resins, which are easy to make with even bulk polymerization, are particularly valuable, for example, as toner resins, thermoset resins, reactive plasticizers, and rheology modifiers.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: November 16, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Shao Hua Guo, Daniel B. Pourreau
  • Patent number: 5973073
    Abstract: Two-component polyurethane coating formulations comprising an aqueous dispersion of a polyisocyanate and a neutralized, water-dispersible resin are disclosed. The neutralized, water-dispersible resin incorporates recurring units of an allylic alcohol or an alkoxylated allylic alcohol. These low-VOC formulations use commercial polyisocyanates and ordinary mixing techniques. The uniquely uniform distribution of hydroxyl groups in the resin contributes to an excellent overall balance of coating properties from the 2K system, including high gloss, hardness, impact resistance, flexibility, weatherability, and chemical resistance.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: October 26, 1999
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Shao-Hua Guo, Donald L. Lickei, Michael J. Morgan, James M. O'Connor