Patents by Inventor Weiqiu Hu

Weiqiu Hu 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).

  • Polyethylene imine based dendritic dispersant
    Patent number: 9381481
    Abstract: The present disclosure relates to a liquid dispersant of the formula I wherein T is selected from a polyethylene imine (PEI) or modified PEI moiety, polyvinylamine (PVA) or modified PVA, or polyallylamine (PAA) or modified PAA; B is a branched monomer; R1 and R2 independently of one another are hydrophobic groups; X is B with —OH terminal group, or R1 or R2, q is a number between 5-2000, with the proviso that q is less than the sum of all amine groups of PEI, PVA, PAA; and n is a number of 1-6.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: July 5, 2016
    Assignee: BASF SE
    Inventors: Huiguang Kou, Haiyang Yu, Yanfei Liu, Weiqiu Hu
  • Silicone free defoamer for solvent based coatings
    Patent number: 8309648
    Abstract: This disclosure relates to a silicone free defoamer for solvent based coatings, especially clear wood coatings preferably based on a graft copolymer of poly alkyl vinyl ether. The coating composition comprises a resin binder component and a defoamer formulation.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: November 13, 2012
    Assignee: BASF SE
    Inventors: Weiqiu Hu, Frank Oliver Heinrich Pirrung, Petrus Johannes Harbers, Chuanjin Zhu, Min Zhu
  • SILICONE FREE DEFOAMER FOR SOLVENT BASED COATINGS
    Publication number: 20110166284
    Abstract: The invention relates to a silicone free defoamer for solvent based coatings, especially clear wood coatings preferably based on a graft copolymer of poly alkyl vinyl ether.
    Type: Application
    Filed: May 6, 2009
    Publication date: July 7, 2011
    Applicant: BASF SE
    Inventors: Weiqiu Hu, Frank Oliver Heinrich Pirrung, Petrus Johannes Harbers, Chuanjin Zhu, Min Zhu
  • POLYETHYLENE IMINE BASED DENDRITIC DISPERSANT
    Publication number: 20100113709
    Abstract: The invention relates to a liquid dispersant of the formula I wherein T is selected from a polyethylene imine (PEI) or modified PEI moiety, polyvinylamine (PVA) or modified PVA, or polyallylamine (PAA) or modified PAA. B is a branched monomer selected from a monofunctional carboxylic acid moiety having at least two hydroxyl groups or a monofunctional carboxylic acid moiety having at least two hydroxyl groups wherein one or more of the hydroxyl groups are hydroxyalkyl substituted, R1 and R2 independently of one another are hydrophobic groups selected from a saturated or unsaturated fatty acid moiety with 3-24 carbon atoms, a monofunctional carboxylic acid moiety or a polymer moiety containing C3-C24 alkyl (hydroxyl)carboxylic acid moieties with MW ranges from 100 to 10,000 g/mol, X is B with —OH terminal group, or R1 or R2, q is a number between 5-2000, with the proviso that q is less than the sum of all amine groups of PEI, PVA, PAA. n is a number of 1-6.
    Type: Application
    Filed: September 17, 2007
    Publication date: May 6, 2010
    Inventors: Huiguang Kou, Haiyang Yu, Yanfei Liu, Weiqiu Hu
  • Catalyst for polymerization or copolymerization of olefins, preparation and use of the same
    Patent number: 7253133
    Abstract: Catalysts and catalyst systems useful for the olefin polymerization and copolymerization, and their synthesis procedure and usage are disclosed.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: August 7, 2007
    Assignee: Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences
    Inventors: Xiuli Sun, Weiqiu Hu, Cong Wang, Yong Tang, Yuliang Zhang, Chun-an Xia
  • Catalyst for polymerization or copolymerization of olefins, preparation and use of the same
    Publication number: 20050004331
    Abstract: Catalysts and catalyst systems useful for the olefin polymerization and copolymerization, and their synthesis procedure and usage are disclosed.
    Type: Application
    Filed: January 21, 2004
    Publication date: January 6, 2005
    Inventors: Xiuli Sun, Weiqiu Hu, Cong Wang, Yong Tang, Yuliang Zhang, Chun-an Xia