Patents by Inventor Gerrit Luinstra

Gerrit Luinstra 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: 20200010603
    Abstract: Described herein are processes for producing moldings comprising oxazolidinone groups, where polyisocyanate (a) is mixed with at least one organic compound (b) having two or more epoxide groups, at least one catalyst (c) for the isocyanate/epoxide reaction, and optionally auxiliary and additive materials (d) to form a reaction mixture, which is introduced into or applied to a mold and reacted to give moldings including oxazolidinone groups, where the catalyst (c) for the isocyanate/epoxide reaction includes a compound of the general formula [M(R1)(R2)(R3)(R4)]+ [X In]?, where M is a nitrogen atom or a phosphorus atom, R1, R2, R3 and R4 are an organic radical, X is fluorine, chlorine, bromine or iodine, I is iodine, and n stands for rational numbers from 0.1 to 10.
    Type: Application
    Filed: March 15, 2018
    Publication date: January 9, 2020
    Inventors: Berend ELING, Hans-Josef THOMAS, Peter DEGLMANN, Janina HENGELSBERG, Tristan PELZER, Gerrit A. LUINSTRA
  • Publication number: 20180037693
    Abstract: The invention relates to a process for the production of polybutadienols from polybutadienes with number-average molar mass from 300 to 2000 g/mol comprising from 20 to 50% of 1,4 double bonds and from 50 to 80% of 1,2 vinylic and 1,2 cyclovinylic double bonds, based on the quantity of all of the double bonds, comprising the steps of i) epoxidation of some or all of the 1,4 double bonds with an epoxidizing reagent which selectively epoxidizes 1,4 double bonds, ii) reaction of the epoxidized polybutadiene with an alcohol or water to give a polybutadienol.
    Type: Application
    Filed: March 3, 2016
    Publication date: February 8, 2018
    Inventors: Berend Eling, Jan Dilcher, Jessica Rudnik, Gerrit Luinstra
  • Publication number: 20170240684
    Abstract: The invention relates to polyurethanes obtainable by reaction of (a) polyisocyanates A selected from modified or unmodified 4,4?-methanediphenyl diisocyanate, higher nuclear homologs of 4,4?-methanediphenyl diisocyanate, isocyanated groups containing prepolymers based on 4,4?methandiphenyl diisocyanate, and mixtures thereof, with (b) compounds having at least two isocyanate-reactive hydrogen atoms, comprising (b1) block copolymers formed from a polybutadienol and a cyclic ester as component B1, and (b2) low molecular weight extenders or crosslinkers each having a molecular weight of 62 to 500 g/mol as component B2.
    Type: Application
    Filed: August 17, 2015
    Publication date: August 24, 2017
    Inventors: Berend Eling, Jan Dilcher, Irina Fink, Gerrit Luinstra
  • Publication number: 20140200328
    Abstract: The invention relates to a process for preparing a zinc dicarboxylate from a zinc compound and a C4-C10 dicarboxylic acid in the presence of a cationic emulsifier and a solvent. The invention also relates to zinc dicarboxylates obtainable by the abovementioned process and having a BET surface area of 50 to 750 m2/g.
    Type: Application
    Filed: August 31, 2012
    Publication date: July 17, 2014
    Applicant: BASF SE
    Inventors: Anna Katharina Brym, Jürgen Zubiller, Gerrit Luinstra, Revaz Korashvili
  • Patent number: 8022146
    Abstract: A thermoplastic copolymer prepared from acrylonitrile and para-alpha-dimethylstyrene via bulk or solution polymerization has an improved heat distortion temperature and can be used together with graft copolymers and further components for the preparation of thermoplastic moldings.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: September 20, 2011
    Assignee: BASF SE
    Inventors: Gerrit Luinstra, Florian Becker, Matthias Müller, Dirk Meckelnburg, Jens Assmann
  • Publication number: 20110020170
    Abstract: The invention relates to metal nanoparticles and a process for the preparation thereof, in which a metal salt solution is reduced with a reducing agent in the presence of the derivatized polyethyleneimines or polyvinylamines. Metal salt solutions of two or more different metals can be reduced simultaneously or in succession, metal nanoparticles comprising two or more different metals being obtained. Preferred metals are silver, palladium, and platinum. Suitable reducing agents are, for example, formic acid, formaldehyde, diethanolamine, 5-pentenoic acid and sodium borohydride. Silver can be used in the form of silver oxide and/or silver nitrate, palladium in the form of alkali metal tetrachloropalladate or palladium(II) nitrate and platinum in the form of alkali metal tetrachloroplatinate or tetraamineplatinum(II) nitrate.
    Type: Application
    Filed: March 17, 2009
    Publication date: January 27, 2011
    Applicant: BASF SE
    Inventors: Gerrit Luinstra, Wolfgang Schrof, Udo Gödert, Robert Feuerhake, Tobias Joachim Koplin, Imme Domke
  • Publication number: 20100261831
    Abstract: A thermoplastic copolymer prepared from acrylonitrile and para-alpha-dimethylstyrene via bulk or solution polymerization has an improved heat distortion temperature and can be used together with graft copolymers and further components for the preparation of thermoplastic moldings.
    Type: Application
    Filed: November 11, 2008
    Publication date: October 14, 2010
    Applicant: BASF SE
    Inventors: Gerrit Luinstra, Florian Becker, Matthias Müller, Dirk Meckelnburg, Jens Assmann
  • Patent number: 7728099
    Abstract: The present invention relates to a process for preparation of polycarbonates with weight-average molar mass MW?230,000 g/mol and with ?2% by weight content of cyclic compounds, including the following steps: (a) reaction of at least one oxirane with carbon dioxide in the presence of a metal-polycarboxylic acid compound in an aprotic, non-water-miscible solvent at a temperature of from 40 to 120° C. and at a pressure of from 1 to 100 bar, where the molar ratio of monomer to metal-polycarboxylic acid compound is ?75, (b) addition of an aqueous solution of an inorganic acid to the reaction mixture once the reaction has ended, (c) removal of the aqueous phase, (d) if appropriate, washing of the remaining organic phase with water, and (e) devolatilization and drying of the resultant slurry of the polycarbonate in the aprotic, non-water-miscible solvent, and to the polycarbonate prepared via the process, and also to the use of the polycarbonate.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: June 1, 2010
    Assignee: BASF SE
    Inventor: Gerrit Luinstra
  • Publication number: 20090306336
    Abstract: The present invention relates to a process for preparation of polycarbonates with weight-average molar mass MW?230 000 g/mol and with ?2% by weight content of cyclic compounds, including the following steps: (a) reaction of at least one oxirane with carbon dioxide in the presence of a metal-polycarboxylic acid compound in an aprotic, non-water-miscible solvent at a temperature of from 40 to 120° C. and at a pressure of from 1 to 100 bar, where the molar ratio of monomer to metal-polycarboxylic acid compound is ?75, (b) addition of an aqueous solution of an inorganic acid to the reaction mixture once the reaction has ended, (c) removal of the aqueous phase, (d) if appropriate, washing of the remaining organic phase with water, and (e) devolatilization and drying of the resultant slurry of the polycarbonate in the aprotic, non-water-miscible solvent, and to the polycarbonate prepared via the process, and also to the use of the polycarbonate.
    Type: Application
    Filed: December 9, 2005
    Publication date: December 10, 2009
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventor: Gerrit Luinstra
  • Patent number: 7601777
    Abstract: Disclosed is a method for producing an aqueous polymer dispersion, according to which unsaturated monomers are first polymerized by means of suitable catalysts, whereupon the obtained polymers that are swelled with all or some of the remaining unreacted monomers are added to surface-active substances and water in a last step in which the obtained polymers are not entirely separated from the remaining monomers.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: October 13, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Graham Edmund Mc Kee, Gerrit Luinstra, Joachim Queisser, Markus Schmid
  • Publication number: 20090234042
    Abstract: This invention is directed to transparent blends of polypropylene carbonate with poly lactide and/or polyhydroxyalkanoates, to a process for the preparation of said blends as well as the use of said blends.
    Type: Application
    Filed: April 18, 2007
    Publication date: September 17, 2009
    Applicant: BASF SE
    Inventor: Gerrit Luinstra
  • Patent number: 7420064
    Abstract: Lactones are prepared by catalytic carbonylation of oxiranes using a catalyst system comprising a) at least one cobalt compound as component A and b) at least one metal compound of the formula (I) as component B, MXxRn-x ??(I) where M is an alkaline earth metal or a metal of group 3, 4 or preferably 12 or 13 of the Periodic Table of the Elements, R is hydrogen or a hydrocarbon radical which may be substituted on the carbon atoms other than the carbon atom bound to M, X is an anion, n is a number corresponding to the valence of M and x is in the range from 0 to n, with n and x being selected so that the compound is uncharged, as catalyst.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: September 2, 2008
    Assignee: BASF SE
    Inventors: Gerrit Luinstra, Ferenc Molnar, Bernhard Rieger, Markus Allmendinger
  • Patent number: 7145022
    Abstract: Lactones are prepared by catalytic carbonylation of oxiranes using a catalyst system comprising a) at least one carbonylation catalyst A comprising uncharged or anionic transition metal complexes of metals of groups 5 to 11 of the Periodic Table of the Elements and b) at least one chiral Lewis acid B, with the exception of [(salph)Al(THF)2][Co(CO)4], as catalyst.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: December 5, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerrit Luinstra, Bernhard Rieger, Markus Allmendinger
  • Patent number: 7112650
    Abstract: A process for preparing thermoplastic poly(3-hydroxyalkanoates) with a molar mass greater than 6 000 g/mol and a melting point in the range from 70 to 170° C., by reacting an oxirane compound with carbon monoxide in the presence of a transition metal catalyst which has rhodium(0), nickel(0), iron(0), cobalt(0) or palladium(0) as central metal and has been chelated with neutral Lewis bases, and also in the presence of diisocyanates, ortho esters, acetals, anhydrides, P2O5, MgO, MgCl2, MgSO4, zeolites, or a mixture of these, at a pressure in the range from 1 to 250 bar and at from room temperature to 150° C.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: September 26, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Slany, Gerrit Luinstra, Xavier Sava
  • Patent number: 7112651
    Abstract: A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I [ML1aL2b]cm+Zc·m/nn???(I) where M is a metal of group VIII; L1 is a ligand having at least one ?-electron pair; each L2 is independently tetrahydrofuran or a ligand which is displaceable by tetrahydrofuran; Z is an anion; a is 1 or 2; b is an integer from 0 to 4; c is 1 or 2; and m and n are integers from 1 to 4.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: September 26, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Helmut Görtz, Gerrit Luinstra, Monika Förster, Andreas Baumann, Ekkehard Lindner
  • Patent number: 7064177
    Abstract: A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I [CpvMLw]m+Zm/nn???(I) where M is Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Re, Fe, Ru, Os, Co, Rh or Ir, Cp is a cyclopentadienyl ligand C5H(5-u)R1u, where u is from 0 to 5 and R1 is alkyl, alkenyl, aryl, heteroaryl, aralkyl, COOR2, COR2, CN or NO2, and R2 is H, alkyl, aryl or aralkyl, v is 1 or 2, each L is independently a nitrile, CO or a ligand displaceable by CO, w is an integer from 0 to 4, Z is an anion, and m and n are each independently an integer from 1 to 3.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: June 20, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Helmut Görtz, Gerrit Luinstra, Wolfram Wielandt, Michael Henes, Ekkehard Lindner
  • Patent number: 7019107
    Abstract: The invention relates to a catalytical process for preparing poly(3-hydroxyalkanoates) by copolymerizing an oxirane compound with carbon monoxide in the presence of a) at least one single- or multicenter neutral transition metal complex (A) based on a metal of groups 5 to 11 of the Periodic Table of the Elements, in which the metal center(s) is/are present in the formal oxidation state 0, and/or b) at least one single- or multicenter anionic transition metal complex (B) based on a metal of groups 5 to 11 of the Periodic Table of the Elements, where multicenter transition metal complexes have metal centers which, without exception, are of the same transition metal, which comprises carrying out the copolymerization in the presence of at least one nucleophile other than hydroxy-substituted pyridine compounds.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: March 28, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerrit Luinstra, Markus Allmendinger, Bernhard Rieger
  • Publication number: 20050255990
    Abstract: A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I where M is TiO, ZrO, HfO, VO, CrO2, MoO2, WO2, MnO2, ReO2, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Zn, Cd, Hg, Sn, SnO or PbO; R1, R2 and R3 are independently a radical which is selected from H, alkyl, aryl and aralkyl and the radical may be partly or fully halogenated; Z is an anion; and n is 1 or 2.
    Type: Application
    Filed: April 10, 2003
    Publication date: November 17, 2005
    Inventor: Gerrit Luinstra
  • Publication number: 20050256320
    Abstract: Lactones are prepared by catalytic carbonylation of oxiranes using a catalyst system comprising a) at least one cobalt compound as component A and b) at least one metal compound of the formula (I) as component B, MXxRn-x ??(I) where M is an alkaline earth metal or a metal of group 3, 4 or preferably 12 or 13 of the Periodic Table of the Elements, R is hydrogen or a hydrocarbon radical which may be substituted on the carbon atoms other than the carbon atom bound to M, X is an anion, n is a number corresponding to the valence of M and x is in the range from 0 to n, with n and x being selected so that the compound is uncharged, as catalyst.
    Type: Application
    Filed: July 31, 2003
    Publication date: November 17, 2005
    Inventors: Gerrit Luinstra, Ferenc Molnar, Bernhard Rieger, Markus Allmendinger
  • Publication number: 20050240032
    Abstract: Lactones are prepared by catalytic carbonylation of oxiranes using a catalyst system comprising a) at least one carbonylation catalyst A comprising uncharged or anionic transition metal complexes of metals of groups 5 to 11 of the Periodic Table of the Elements and b) at least one chiral Lewis acid B, with the exception of [(salph)Al(THF)2][Co(CO)4], as catalyst.
    Type: Application
    Filed: July 31, 2003
    Publication date: October 27, 2005
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Gerrit Luinstra, Bernhard Rieger, Markus Allmendinger