Patents by Inventor Daniel Hoehener

Daniel Hoehener 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: 9840578
    Abstract: PIPA polyols are made in a two-step process. In the first step, a base polyether polyol and a polyisocyanate are reacted to form a mixture that contains unreacted base polyol, unreacted polyisocyanate and adducts of the base polyol and polyisocyanate. A low equivalent weight polyol is then added and reacted in a second step to form the dispersion. The process unexpectedly produces a stable dispersion of the fine PIPA particles in the base polyol, even when the base polyol contains mostly secondary hydroxyl groups. The process also permits the tuning of product viscosity by increasing or decreasing the extent of reaction in the first step.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: December 12, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Paul Cookson, Francois Casati, Ricco Borella, Daniel Hoehener, Irena Amici-Kroutilova
  • Patent number: 9550856
    Abstract: Embodiments of the invention include a polymer polyol dispersions. The polymer dispersions include a reaction product of a reaction system, where the reaction system includes: at least one polyol, at least one phosphorus based flame retardant having at least one active hydrogen attached to a nitrogen or oxygen atom, at least one of a co-reactant having an equivalent weight of up to 400 and at least one active hydrogen attached to a nitrogen or oxygen atom, at least one catalyst, and at least one polyisocyanate.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: January 24, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Paul Cookson, Daniel Hoehener, Francois M. Casati
  • Publication number: 20160264716
    Abstract: Embodiments of the invention include a method of producing polymer polyol dispersions is. The method includes providing at least one reaction system, and the reaction system includes: a) at least one polyol, b) at least one seed population, c) at least one catalyst, at least one co-reactant having an equivalent weight of up to 400 and at least one active hydrogen attached to a nitrogen or oxygen atom, and e) at least one polyisocyanate. The at least one seed population includes less than about 5% by weight of the total weight of the at least one reaction system and includes seed particles having diameters of less than 5 ?m. The at least one reaction mixture reacts to form at least one of a polyurea and polyurethane-urea particle population in the at least one polyol without the addition of any catalysts comprising tin. The polymer polyol dispersion has a solids content of at least 15% of the weight of the polymer polyol dispersion.
    Type: Application
    Filed: May 23, 2016
    Publication date: September 15, 2016
    Inventors: Paul Cookson, Ricco B. Borella, Daniel Hoehener, Francois M. Casati
  • Patent number: 9399696
    Abstract: Embodiments include polymer polyol dispersions which include a polyol liquid phase and solid particle phase. Embodiments include methods of making the polymer polyol dispersions. The polymer polyol dispersions are essentially free of tin, have a solid content of between about 20 and 50 wt % based on the total weight of the polymer polyol dispersion, and have a viscosity at 20 C. of less than 9000 mPas. The solid particle phase has more than 90% by weight of particles in the solid particle phase having a particle diameter of less than 5 ?m.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 26, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Ricco B. Borella, Paul Cookson, Daniel Hoehener, Francois M. Casati
  • Publication number: 20160194434
    Abstract: PIPA polyols are made in a two-step process. In the first step, a base polyether polyol and a polyisocyanate are reacted to form a mixture that contains unreacted base polyol, unreacted polyisocyanate and adducts of the base polyol and polyisocyanate. A low equivalent weight polyol is then added and reacted in a second step to form the dispersion. The process unexpectedly produces a stable dispersion of the fine PIPA particles in the base polyol, even when the base polyol contains mostly secondary hydroxyl groups. The process also permits the tuning of product viscosity by increasing or decreasing the extent of reaction in the first step.
    Type: Application
    Filed: September 11, 2014
    Publication date: July 7, 2016
    Inventors: Paul Cookson, Francois Casati, Ricco Borella, Daniel Hoehener, Irena Amici-Kroutilova
  • Publication number: 20150038653
    Abstract: Embodiments include polymer polyol dispersions which include a polyol liquid phase and solid particle phase. Embodiments include methods of making the polymer polyol dispersions. The polymer polyol dispersions are essentially free of tin, have a solid content of between about 20 and 50 wt % based on the total weight of the polymer polyol dispersion, and have a viscosity at 20C of less than 9000 mPas. The solid particle phase has more than 90% by weight of particles in the solid particle phase having a particle diameter of less than 5 ?m.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 5, 2015
    Inventors: Ricco B. Borella, Paul Cookson, Daniel Hoehener, Francois M. Casati
  • Publication number: 20140329925
    Abstract: Embodiments of the invention include a polymer polyol dispersions. The polymer dispersions include a reaction product of a reaction system, where the reaction system includes: at least one polyol, at least one phosphorus based flame retardant having at least one active hydrogen attached to a nitrogen or oxygen atom, at least one of a co-reactant having an equivalent weight of up to 400 and at least one active hydrogen attached to a nitrogen or oxygen atom, at least one catalyst, and at least one polyisocyanate.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 6, 2014
    Applicants: The Dow Chemical Company, Dow Europe GmbH
    Inventors: Paul A Cookson, Daniel Hoehener, Francois M. Casati
  • Publication number: 20140051778
    Abstract: Embodiments of the invention include a method of producing polymer polyol dispersions is. The method includes providing at least one reaction system, and the reaction system includes: a) at least one polyol, b) at least one seed population, c) at least one catalyst, d) at least one co-reactant having an equivalent weight of up to 400 and at least one active hydrogen attached to a nitrogen or oxygen atom, and e) at least one polyisocyanate. The at least one seed population includes less than about 5% by weight of the total weight of the at least one reaction system and includes seed particles having diameters of less than 5 ?m. The at least one reaction mixture reacts to form at least one of a polyurea and polyurethane-urea particle population in the at least one polyol without the addition of any catalysts comprising tin. The polymer polyol dispersion has a solids content of at least 15% of the weight of the polymer polyol dispersion.
    Type: Application
    Filed: May 9, 2012
    Publication date: February 20, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Paul Cookson, Ricco B. Borella, Daniel Hoehener, Francois M. Casati