Patents by Inventor Indu VAPPALA

Indu VAPPALA 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: 20190343755
    Abstract: A nail polish composition, in particular nail polish formulation, is disclosed which is based on a specific solvent-free aqueous polyurethane polymer dispersion, which is derived from at least one isocyanate-terminated ethylenically unsaturated polyurethane pre-polymer in a reactive diluent, after a chain extension reaction with a chain extender bearing isocyanate-reactive groups. The polyurethane pre-polymer comprises at least one (meth)acrylate functional group and at least one isocyanate functional group.
    Type: Application
    Filed: July 24, 2019
    Publication date: November 14, 2019
    Inventors: Jeffrey A. KLANG, Jin LU, Indu VAPPALA
  • Patent number: 10329449
    Abstract: A solvent-free aqueous curable polyurethane dispersion is derived from at least one isocyanate-terminated ethylenically unsaturated polyurethane pre-polymer in a reactive diluent. The polyurethane pre-polymer comprises at least one (meth)acrylate functional group and at least one isocyanate functional group. Methods for making a solvent-free aqueous polyurethane dispersion, curable compositions comprising the dispersion and resulting cured products are also disclosed.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: June 25, 2019
    Assignee: ARKEMA FRANCE
    Inventors: Jeffrey A. Klang, Jin Lu, Indu Vappala
  • Publication number: 20170049683
    Abstract: A nail polish composition, in particular nail polish formulation, is disclosed which is based on a specific solvent-free aqueous polyurethane polymer dispersion, which is derived from at least one isocyanate-terminated ethylenically unsaturated polyurethane pre-polymer in a reactive diluent, after a chain extension reaction with a chain extender bearing isocyanate-reactive groups. The polyurethane pre-polymer comprises at least one (meth)acrylate functional group and at least one isocyanate functional group.
    Type: Application
    Filed: April 28, 2015
    Publication date: February 23, 2017
    Inventors: Jeffrey A. KLANG, Jin LU, Indu VAPPALA
  • Publication number: 20170049684
    Abstract: A curable aqueous polyurethane dispersion is formed by reacting a polyol component with a polyisocyanate. The polyol component comprises a1) at least one non-ionic polyol, a2) at least one polyol bearing at least one ionic or potentially ionic group comprising an acid group or salt thereof and a3) at least one ethylenically unsaturated monoalcohol or polyol. The polyol component contains carbon atoms from renewable resources. A method for making the curable aqueous polyurethane dispersion, uses of the aqueous polyurethane dispersion, cured polyurethanes and nail polish formulations comprising aqueous polyurethane dispersions are also disclosed.
    Type: Application
    Filed: April 28, 2015
    Publication date: February 23, 2017
    Inventors: Jeffrey A. KLANG, Jin LU, Indu VAPPALA, Yuhong HE
  • Publication number: 20160362515
    Abstract: A curable aqueous polyurethane dispersion is formed by reacting a polyol a) component with a polyisocyanate b) in excess to form a polyurethane pre-polymer which is neutralized and dispersed before chain extending with a chain extender c) to form the final polyurethane polymer aqueous dispersion. The polyol a) component comprises a1) at least one non-ionic polyol, a 2) at least one polyol bearing at least one ionic or potentially ionic group comprising an acid group or salt thereof and a3) at least one ethylenically unsaturated monoalcohol or polyol. The polyol component contains carbon atoms from renewable resources. A method for making the curable aqueous polyurethane dispersion, uses of the aqueous polyurethane dispersion, cured polyurethanes are also disclosed.
    Type: Application
    Filed: February 25, 2015
    Publication date: December 15, 2016
    Inventors: Jeffrey A. KLANG, Jin LU, Indu VAPPALA, Yuhong HE
  • Publication number: 20160304742
    Abstract: A solvent-free aqueous curable polyurethane dispersion is derived from at least one isocyanate-terminated ethylenically unsaturated polyurethane pre-polymer in a reactive diluent. The polyurethane pre-polymer comprises at least one (meth)acrylate functional group and at least one isocyanate functional group. Methods for making a solvent-free aqueous polyurethane dispersion, curable compositions comprising the dispersion and resulting cured products are also disclosed.
    Type: Application
    Filed: November 21, 2014
    Publication date: October 20, 2016
    Inventors: Jeffrey A. Klang, Jin LU, Indu VAPPALA