Patents by Inventor Chien L. Hsu

Chien L. Hsu 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).

  • Water-based polymer emulsions for opaque films and coatings applications on flexible substrates
    Patent number: 10106679
    Abstract: A process of preparing a water-based emulsion includes adding a first monomer feed to a reaction vessel in the presence of a first initiator and water to form an acid-functional polymer; neutralizing the acid-functional polymer to form a particulate polymer; and adding a second monomer feed to the reaction vessel in the presence of a second initiator to form an agglomerated polymer; where the process is a one-pot process. The first monomer feed includes a unbranched (meth)acrylate monomer, a (meth)acrylic acid monomer, a branched (meth)acrylate, and a styrenic monomer; the second monomer feed includes a hydrophobic monomer; the water-based emulsion includes the agglomerated polymer; the agglomerated polymer includes the particulate polymer; and the agglomerated polymer having an aggregated drupelet morphology. The agglomerated polymers may be used in high opacity emulsions.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: October 23, 2018
    Assignee: BASF SE
    Inventors: Sarav Bharat Jhaveri, Chien L. Hsu
  • WATER-BASED POLYMER EMULSIONS FOR OPAQUE FILMS AND COATINGS APPLICATIONS ON FLEXIBLE SUBSTRATES
    Publication number: 20170267857
    Abstract: A process of preparing a water-based emulsion includes adding a first monomer feed to a reaction vessel in the presence of a first initiator and water to form an acid-functional polymer; neutralizing the acid-functional polymer to form a particulate polymer; and adding a second monomer feed to the reaction vessel in the presence of a second initiator to form an agglomerated polymer; where the process is a one-pot process. The first monomer feed includes a unbranched (meth)acrylate monomer, a (meth)acrylic acid monomer, a branched (meth)acrylate, and a styrenic monomer; the second monomer feed includes a hydrophobic monomer; the water-based emulsion includes the agglomerated polymer; the agglomerated polymer includes the particulate polymer; and the agglomerated polymer having an aggregated drupelet morphology. The agglomerated polymers may be used in high opacity emulsions.
    Type: Application
    Filed: June 1, 2017
    Publication date: September 21, 2017
    Applicant: BASF SE
    Inventors: Sarav Bharat Jhaveri, Chien L. Hsu
  • Water-based polymer emulsions for opaque films and coatings applications on flexible substrates
    Patent number: 9701829
    Abstract: A process of preparing a water-based emulsion includes adding a first monomer feed to a reaction vessel in the presence of a first initiator and water to form an acid-functional polymer; neutralizing the acid-functional polymer to form a particulate polymer; and adding a second monomer feed to the reaction vessel in the presence of a second initiator to form an agglomerated polymer; where the process is a one-pot process. The first monomer feed includes a unbranched (meth)acrylate monomer, a (meth)acrylic acid monomer, a branched (meth)acrylate, and a styrenic monomer; the second monomer feed includes a hydrophobic monomer; the water-based emulsion includes the agglomerated polymer; the agglomerated polymer includes the particulate polymer; and the agglomerated polymer having an aggregated drupelet morphology. The agglomerated polymers may be used in high opacity emulsions.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: July 11, 2017
    Assignee: BASF SE
    Inventors: Sarav Bharat Jhaveri, Chien L. Hsu
  • WATER-BASED POLYMER EMULSIONS FOR OPAQUE FILMS AND COATINGS APPLICATIONS ON FLEXIBLE SUBSTRATES
    Publication number: 20140228477
    Abstract: A process of preparing a water-based emulsion includes adding a first monomer feed to a reaction vessel in the presence of a first initiator and water to form an acid-functional polymer; neutralizing the acid-functional polymer to form a particulate polymer; and adding a second monomer feed to the reaction vessel in the presence of a second initiator to form an agglomerated polymer; where the process is a one-pot process. The first monomer feed includes a unbranched (meth)acrylate monomer, a (meth)acrylic acid monomer, a branched (meth)acrylate, and a styrenic monomer; the second monomer feed includes a hydrophobic monomer; the water-based emulsion includes the agglomerated polymer; the agglomerated polymer includes the particulate polymer; and the agglomerated polymer having an aggregated drupelet morphology. The agglomerated polymers may be used in high opacity emulsions.
    Type: Application
    Filed: August 29, 2012
    Publication date: August 14, 2014
    Inventors: Sarav Bharat Jhaveri, Chien L. Hsu