Patents by Inventor Hans de Brouwer

Hans de Brouwer 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: 20160168334
    Abstract: Disclosed herein are phenolic compounds as replacements for eugenol as end-capping agents in polysiloxanes, such as eugenol-endcapped polysiloxanes that are used to prepare polycarbonate-polysiloxane copolymers.
    Type: Application
    Filed: July 24, 2014
    Publication date: June 16, 2016
    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Ramon Groote, Hans de Brouwer, Robert Van de Grampel
  • Patent number: 9260561
    Abstract: Disclosed are polyestercarbonate copolymers comprising a carbonate unit of Formula (I), an ITR ester unit of Formula (V), and optionally a different carbonate unit of Formula (VI): wherein Ra, Rb, p, q, A, h, j, k, Rc, r, and R1 are as described herein. The polyestercarbonate copolymers have a combination of scratch resistance, good flow, and good weatherability.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: February 16, 2016
    Assignee: SABIC Global Technologies B.V.
    Inventors: Hans de Brouwer, Robert Dirk van Grampel, James F. Hoover, Adrianus Alphonsus Maria Kusters, Jan-Pleun Lens, Andries Jakobus Petrus van Zyl
  • Patent number: 8962770
    Abstract: Disclosed herein is are thermoplastic compositions comprising a blend of a homopolycarbonate comprising units derived from an aromatic dihydroxy compound and a copolymer comprising isosorbide units and siloxane units. The copolymer comprising isosorbide units and siloxane units can further comprise non-isosorbide aliphatic units derived from a C14-44 aliphatic diacid, a C14-44 aliphatic diol or combination of these, aromatic units, aliphatic units derived from an oligomer having a weight average molecular weight of 900 to 4000 or a combination of some or all of the foregoing additional units.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: February 24, 2015
    Assignee: Sabic Global Technologies B.V.
    Inventors: Hans de Brouwer, Robert Dirk van de Grampel, Jan Henk Kamps, Jan Pleun Lens
  • Patent number: 8633265
    Abstract: Provided herein are polymeric compositions that are suitable protected from UV-induced discoloration and degradation. Such resins comprise an isosorbide polymer and one or more hindered amines. These resin compositions are useful in the manufacture of various shaped, formed and/or molded articles.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: January 21, 2014
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Jeremy David Hurst, Roland Assink, Hans de Brouwer
  • Patent number: 8389662
    Abstract: Disclosed herein is a polycarbonate polymer comprising: an isosorbide unit, a polysiloxane unit, and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit, polysiloxane unit, and aliphatic unit are each carbonate, or a combination of carbonate and ester units, the aliphatic unit different from the isosorbide unit is derived from an aliphatic oligomer having a molecular weight of 900 to 4000, and the calculated bio-content is greater than or equal to 40 weight percent, based on the total weight of the polycarbonate polymer.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: March 5, 2013
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: Hans de Brouwer, Robert Dirk van de Grampel, Jan Henk Kamps, Jan-Pleun Lens, Hendrik Theodurus van de Grampel
  • Publication number: 20120184651
    Abstract: Provided herein are polymeric compositions that are suitable protected from UV-induced discoloration and degradation. Such resins comprise an isosorbide polymer and one or more hindered amines. These resin compositions are useful in the manufacture of various shaped, formed and/or molded articles.
    Type: Application
    Filed: January 19, 2011
    Publication date: July 19, 2012
    Inventors: Jeremy David Hurst, Roland Assink, Hans de Brouwer
  • Publication number: 20110160408
    Abstract: Disclosed herein is a polycarbonate polymer comprising: an isosorbide unit, a polysiloxane unit, and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit, polysiloxane unit, and aliphatic unit are each carbonate, or a combination of carbonate and ester units, the aliphatic unit different from the isosorbide unit is derived from an aliphatic oligomeric polyester polyol having a molecular weight of 900 to 4000, and the calculated bio-content is greater than or equal to 40 weight percent, based on the total weight of the polycarbonate polymer.
    Type: Application
    Filed: September 29, 2010
    Publication date: June 30, 2011
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V
    Inventors: Hans de Brouwer, Robert Dirk van de Grampel, Jan Henk Kamps, Jan-Pleun Lens, Hendrik Theodurus van de Grampel
  • Publication number: 20110160406
    Abstract: Disclosed herein is are thermoplastic compositions comprising a blend of a homopolycarbonate comprising units derived from an aromatic dihydroxy compound and a copolymer comprising isosorbide units and siloxane units. The copolymer comprising isosorbide units and siloxane units can further comprise non-isosorbide aliphatic units derived from a C14-44 aliphatic diacid, a C14-44 aliphatic diol or combination of these, aromatic units, aliphatic units derived from an oligomer having a weight average molecular weight of 900 to 4000 or a combination of some or all of the foregoing additional units.
    Type: Application
    Filed: September 29, 2010
    Publication date: June 30, 2011
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V
    Inventors: Hans de Brouwer, Robert Dirk van de Grampel, Jan Henk Kamps, Jan Pleun Lens
  • Publication number: 20100130700
    Abstract: Disclosed are polyestercarbonate copolymers comprising a carbonate unit of Formula (I), an ITR ester unit of Formula (V), and optionally a different carbonate unit of Formula (VI): wherein Ra, Rb, p, q, A, h, j, k, Rc, r, and R1 are as described herein. The polyestercarbonate copolymers have a combination of scratch resistance, good flow, and good weatherability.
    Type: Application
    Filed: November 21, 2008
    Publication date: May 27, 2010
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Hans de Brouwer, Robert Dirk van Grampel, James F. Hoover, Adrianus Alphonsus Maria Kusters, Jan-Pleun Lens, Andries Jakobus Petrus van Zyl
  • Patent number: 7659359
    Abstract: An isosorbide-containing polycarbonate composition is provided. The composition contains a polycarbonate having repeat units derived from isosorbide, a polycarbonate-property-modifying additive, and a pH stabilizer. When a solution containing 10 wt. % of the composition dissolved in dichloromethane is prepared the solution has a non-aqueous pH in a range of equal to or between 0.8 below and 0.5 above the pH of the dichloromethane.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: February 9, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Roland Assink, Hans de Brouwer, Bernd Jansen, Jan Henk Kamps, Wilhelmus Johannes Daniel Steendam, Jan-Willem Goedmakers
  • Publication number: 20060052529
    Abstract: The invention relates to a process for the preparation of an aqueous polymer dispersion by mini-emulsion polymerisation comprising the steps of (a) forming a mixture comprising (optionally formed as a first aqueous pre-mixture) water and at least one amphiphilic stabilising polymer having a number average molecular weight Mn of 800 to 100,000 and an acid number of 50 to 400 mg KOH/g and (optionally formed as a second organic pre-mixture) at least one hydrophobic co-stabiliser and at least one a,?-ethylenically unsaturated monomer; (b) subjecting this mixture to high stress to form a mini-emulsion comprising stabilised droplets of average diameter from about 10 to about 1000 nm and polymerising the monomer within the droplets. Preferably the mixtures are substantially free of surfactant other than the amphiphilic polymer. Aqueous polymer dispersions so obtained and uses thereof in coatings, films, adhesives and inks are also described.
    Type: Application
    Filed: February 4, 2004
    Publication date: March 9, 2006
    Applicant: SURFACE SPECIALTIES S.A.
    Inventors: Marcelo Do Amaral Martins, Jose M Asua, Hans De Brouwer, Steven Van Es