Patents by Inventor Dirk Holter

Dirk Holter 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: 11920260
    Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: March 5, 2024
    Assignee: RHODIA ACETOW GMBH
    Inventors: Dirk Hölter, Philippe Lapersonne
  • Publication number: 20220298675
    Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.
    Type: Application
    Filed: June 6, 2022
    Publication date: September 22, 2022
    Inventors: Dirk Hölter, Philippe Lapersonne
  • Publication number: 20220290331
    Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.
    Type: Application
    Filed: June 3, 2022
    Publication date: September 15, 2022
    Inventors: Dirk Hölter, Philippe Lapersonne
  • Patent number: 11352716
    Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: June 7, 2022
    Assignee: Rhodia Acetow GmbH
    Inventors: Dirk Hölter, Philippe Lapersonne
  • Publication number: 20190168201
    Abstract: A process for the manufacture of a product including a catalytically active titanium compound, which includes at least one step wherein the catalytically active titanium compound is contacted with a substrate in a liquid phase including a solvent having a carbonyl function and a C—H bond in ?-position to the carbonyl function, and an inhibitor selected from one or more acids and one or more alcohols or mixtures thereof and product obtained by the process.
    Type: Application
    Filed: February 6, 2019
    Publication date: June 6, 2019
    Inventors: Dirk HÖLTER, Armin STEIN
  • Patent number: 10106485
    Abstract: The present invention concerns a process for manufacturing a fraction comprising carboxylic acid anhydride by reaction of a fraction comprising carboxylic acid with a ketene, and the use of the fraction comprising carboxylic acid anhydride in a process for acylation of polysaccharides.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: October 23, 2018
    Assignee: Rhodia Acetow GmbH
    Inventors: Thomas Krumrey, Andreas Hummel, Dirk Hölter
  • Publication number: 20180296953
    Abstract: This application relates non-woven fabrics comprising cellulose acetate fibers and their use.
    Type: Application
    Filed: October 7, 2016
    Publication date: October 18, 2018
    Inventor: Dirk Hölter
  • Patent number: 10017449
    Abstract: The present invention concerns a process for the recovery of carboxylic acid from a fraction comprising carboxylic acid and impurities, and a process for the manufacture of treated wood, which comprise the step of submitting a fraction containing carboxylic acid and impurities to a gas stripping operation.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: July 10, 2018
    Assignee: Rhodia Acetow GmbH
    Inventors: Thomas Krumrey, Andreas Hummel, Dirk Hölter
  • Publication number: 20170342598
    Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.
    Type: Application
    Filed: December 10, 2015
    Publication date: November 30, 2017
    Applicant: SOLVAY ACETOW GmbH
    Inventors: Dirk HÖLTER, Philippe LAPERSONNE
  • Publication number: 20170327450
    Abstract: The present invention concerns a process for manufacturing a fraction comprising carboxylic acid anhydride by reaction of a fraction comprising carboxylic acid with a ketene, and the use of the fraction comprising carboxylic acid anhydride in a process for acylation of polysaccharides.
    Type: Application
    Filed: December 1, 2015
    Publication date: November 16, 2017
    Applicant: SOLVAY ACETOW GmbH
    Inventors: Thomas KRUMREY, Andreas HUMMEL, Dirk HÖLTER
  • Publication number: 20170226041
    Abstract: The present invention concerns a process for the recovery of carboxylic acid from a fraction comprising carboxylic acid and impurities, and a process for the manufacture of treated wood, which comprise the step of submitting a fraction containing carboxylic acid and impurities to a gas stripping operation.
    Type: Application
    Filed: August 13, 2015
    Publication date: August 10, 2017
    Applicant: SOLVAY ACETOW GmbH
    Inventors: Thomas KRUMREY, Andreas HUMMEL, Dirk HÖLTER
  • Publication number: 20160199826
    Abstract: Process for the manufacture of a product containing a catalytically active titanium compound, which comprises at least one step wherein the catalytically active titanium compound is contacted with a substrate in a liquid phase comprising a solvent having a carbonyl function and a C—H bond in ?-position to said carbonyl function, and an inhibitor selected from one or more acids and one or more alcohols or mixtures thereof and product obtained by the process.
    Type: Application
    Filed: July 31, 2014
    Publication date: July 14, 2016
    Inventors: Dirk HÖLTER, Armin STEIN
  • Publication number: 20160192700
    Abstract: A catalytically degradable plastic is described, with content of cellulose esters and also optionally of additives. A particular characterizing feature of this catalytically degradable plastic is that it contains a dispersed, catalytically active transition-metal-modified titanium dioxide.
    Type: Application
    Filed: July 30, 2014
    Publication date: July 7, 2016
    Inventors: Dirk HÖLTER, Wolfgang KOPPE
  • Patent number: 9010338
    Abstract: The invention relates to a biodegradable plastic having increased biodegradation speed. Said plastic comprises a) finely distributed particle of a biodegradable, water-soluble, organic component, and b) finely distributed particles of a water-soluble, inorganic component promoting the growth of microorganisms and comprising N, P, and/or S. Said plastic is particularly based on cellulose esters such as cellulose acetate. Preferable components A are water-soluble saccharides and/or water-soluble organic acids. Said particularly advantageous biodegradable plastic is particularly available in the form of fibers, films, injection molded items, granulate beads, and containers. Controlled-release biocides and/or fertilizers can also be included in the molded part, wherein the molded part is degraded faster in the environment as said ingredients are released. The accelerated biodegradation is based on a synergistic interaction of the components indicated.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: April 21, 2015
    Assignee: Solvay Acetow GmbH
    Inventors: Paul Rustemeyer, Wolfgang Koppe, Dirk Hölter
  • Patent number: 8986502
    Abstract: A photodegradable paper including cellulose fibers and, if applicable, fillers, additives and/or other kind of fibers is described. Also described, is a paper particularly in the field of packaging, tissue papers or cigarettes.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: March 24, 2015
    Assignee: Solvay Acetow GmbH
    Inventors: Dirk Hölter, Wolfgang Koppe
  • Patent number: 8697213
    Abstract: A photodegradable plastic is described, comprising cellulose esters and also, if appropriate, additives. A particular characterizing feature of this photodegradable plastic is that it comprises a dispersed photocatalytic carbon-modified titanium dioxide. Comparative experiments show that this photodegradable plastic exhibits a surprisingly high increase in photocatalytic degradability when compared with products in which a conventional or other modified titanium dioxide is used. This improvement is apparent in particular in use of the photodegradable plastic according to the invention when it is further processed to give moldings. The photodegradable plastic can, for example, first be further processed to give a filter tow. This can be used to produce filter rods, and these can then be used to produce filter plugs for filter-tip cigarettes.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: April 15, 2014
    Assignee: SOLVAY ACETOW GmbH
    Inventors: Dirk Hölter, Wolfgang Koppe
  • Publication number: 20130199742
    Abstract: A photodegradable paper including cellulose fibers and, if applicable, fillers, additives and/or other kind of fibers is described. Also described, is a paper particularly in the field of packaging, tissue papers or cigarettes.
    Type: Application
    Filed: February 10, 2011
    Publication date: August 8, 2013
    Applicant: RHODIA ACETOW GMBH
    Inventors: Dirk Hölter, Wolfgang Koppe
  • Publication number: 20110197642
    Abstract: The invention relates to a biodegradable plastic having increased biodegradation speed. Said plastic comprises a) finely distributed particle of a biodegradable, water-soluble, organic component, and b) finely distributed particles of a water-soluble, inorganic component promoting the growth of microorganisms and comprising N, P, and/or S. Said plastic is particularly based on cellulose esters such as cellulose acetate. Preferable components A are water-soluble saccharides and/or water-soluble organic acids. Said particularly advantageous biodegradable plastic is particularly available in the form of fibers, films, injection molded items, granulate beads, and containers. Controlled-release biocides and/or fertilizers can also be included in the molded part, wherein the molded part is degraded faster in the environment as said ingredients are released. The accelerated biodegradation is based on a synergistic interaction of the components indicated.
    Type: Application
    Filed: September 17, 2009
    Publication date: August 18, 2011
    Inventors: Paul Rustemeyer, Wolfgang Koppe, Dirk Hölter
  • Publication number: 20110143067
    Abstract: A photodegradable plastic is described, comprising cellulose esters and also, if appropriate, additives. A particular characterizing feature of this photodegradable plastic is that it comprises a dispersed photocatalytic carbon-modified titanium dioxide. Comparative experiments show that this photodegradable plastic exhibits a surprisingly high increase in photocatalytic degradability when compared with products in which a conventional or other modified titanium dioxide is used This improvement is apparent in particular in use of the photodegradable plastic according to the invention when it is further processed to give moldings, The photodegradable plastic can, for example, first be further processed to give a filter tow. This can he used to produce filter rods, and these can then he used to produce filter plugs for filter-tip cigarettes.
    Type: Application
    Filed: August 13, 2009
    Publication date: June 16, 2011
    Inventors: Dirk Hölter, Wolfgang Koppe
  • Publication number: 20040229972
    Abstract: The invention describes a low shrinking polymerizable dental material, comprising a mixture of a polymerizable resin, a polymerizable monomer, a polymerization initiator and/or sensibilizer and a filler in a content of about 20 to about 85 percent. The volumetric shrinkage during polymerization is less than about 1.5 Vol.- % due to its rheopex behavior.
    Type: Application
    Filed: June 15, 2004
    Publication date: November 18, 2004
    Inventors: Joachim E. Klee, Uwe Walz, Dirk Holter, Armin Burgath, Holger Erey, Rolf Mulhaupt