Patents by Inventor Alexandra Hild

Alexandra Hild 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: 20240099956
    Abstract: An aqueous personal care rinse off composition is provided, comprising: a dermatologically acceptable aqueous vehicle; a dermatologically acceptable cleaning surfactant; and a suds enhancing structurant; wherein the suds enhancing structurant comprises a crosslinked cellulose ether containing 0.1 to 1.0 wt %, based on weight of the crosslinked cellulose ether, of polyether groups.
    Type: Application
    Filed: February 22, 2022
    Publication date: March 28, 2024
    Inventors: German Parada, Lyndsay M. Leal, Alexandra Hild, Jörg Neubauer, Bethany K. Johnson
  • Publication number: 20230210124
    Abstract: Provided is an oil composition comprising, by weight based on the weight of the composition, (a) 2-12% of one or more ethylcellulose polymers; (b) 2-12% of an additive selected from the group consisting of one or more fatty acids, one or more monoglycerides of fatty acids, one or more diglycerides of fatty acids, and mixtures thereof; (c) 2-12% of one or more starch; and (d) 64-94% of one or more oils. Also provided is a margarine-type composition and a puff pastry composition, both comprising ethylcellulose polymer, an additive (b), and starch.
    Type: Application
    Filed: December 8, 2022
    Publication date: July 6, 2023
    Inventors: Alexandra Hild, Britta Huebner-Keese, Anne Adden, Roja Ergun
  • Publication number: 20220127381
    Abstract: A process for producing a crosslinked cellulose ether including the steps of (i) contacting at least one cellulose material with a mixture comprising (ia) at least one crosslinking agent and (ib) at least one alkalization reagent to form an activated cellulose material; and (ii) contacting the activated cellulose material of step (i) with at least one etherification reagent; wherein the at least one etherification reagent reacts with the activated cellulose material to form the crosslinked cellulose ether; and a crosslinked cellulose ether produced by the above process.
    Type: Application
    Filed: April 17, 2020
    Publication date: April 28, 2022
    Inventors: Alexandra Hild, Jöerg Neubauer, Sonja Menz, Matthias Sprehe, Michael Schreck
  • Publication number: 20220112311
    Abstract: A process for producing a crosslinked cellulose ether including the steps of: (a) contacting at least one cellulose material with at least one alkalization reagent to form an activated cellulose material; (b) contacting the activated cellulose material of step (a) with at least one etherification reagent to form an uncrosslinked cellulose ether; (c) subjecting the cellulose ether of step (b) to a simultaneous or stepwise washing and/or granulating step; (d) adding at least one crosslinking agent to the uncrosslinked cellulose ether during the washing and/or granulating of step (c) to form a crosslinked cellulose ether; and (e) any other optional components desired; and a crosslinked cellulose ether produced by the above process.
    Type: Application
    Filed: April 17, 2020
    Publication date: April 14, 2022
    Inventors: Alexandra Hild, Jöerg Neubauer, Sonja Menz
  • Publication number: 20220106411
    Abstract: A process for producing a crosslinked cellulose ether including contacting an activated cellulose material with (i) an aqueous crosslinking agent emulsion, wherein the aqueous crosslinking agent emulsion is a mixture of (ia) at least one crosslinking agent; (ib) water; and (ic) any other optional components desired; and (ii) at least one etherification reagent; wherein the aqueous crosslinking agent emulsion (i) and the at least one etherification reagent (ii) react with the activated cellulose material to form the crosslinked cellulose ether; and a crosslinked cellulose ether produced by the above process.
    Type: Application
    Filed: April 17, 2020
    Publication date: April 7, 2022
    Inventors: Alexandra Hild, Jöerg Neubauer, Steffen Schmidt, Robert Baumann
  • Publication number: 20220048820
    Abstract: A concrete-forming composition for producing a concrete article including: (a) at least one internal curing agent including a water-insoluble crosslinked cellulose ether wherein the water-insoluble crosslinked cellulose ether has a higher water adsorption capacity compared to typically used superabsorbent polymers and wherein the water-insoluble crosslinked cellulose ether can be successfully and efficiently used as a water-insoluble crosslinked cellulose either internal curing agent in concrete-forming compositions; and (b) a cementitious material; a process for making the above concrete-forming composition; and a concrete article made from the above concrete-forming composition with the objective of reducing autogenous shrinkage and crack formation in the resulting concrete article made from the above concrete-forming composition.
    Type: Application
    Filed: February 6, 2020
    Publication date: February 17, 2022
    Inventors: Robert Baumann, Jörn Breckwoldt, Alexandra Hild, Marc Schmitz
  • Patent number: 10494303
    Abstract: The present invention provides dry mix compositions for use in making gypsum plasters or mortars comprising gypsum, preferably, phosphorous gypsum one or more retarder, and one or more crosslinked cellulose ethers containing polyether groups. The compositions enable the provision of gypsum dry mixes, such as those from phosphorus gypsum, that make gypsum mortars with less stickiness while reducing the amount of cellulose ether in the dry mix.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: December 3, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Joern Breckwoldt, Alexandra Hild, Anette Wagner
  • Publication number: 20190307144
    Abstract: Provided is an oil composition comprising, by weight based on the weight of the composition, (a) 2-12% of one or more ethylcellulose polymers; (b) 2-12% of an additive selected from the group consisting of one or more fatty acids, one or more monoglycerides of fatty acids, one or more diglycerides of fatty acids, and mixtures thereof; (c) 2-12% of one or more starch; and (d) 64-94% of one or more oils. Also provided is a margarine-type composition and a puff pastry composition, both comprising ethylcellulose polymer, an additive (b), and starch.
    Type: Application
    Filed: September 14, 2017
    Publication date: October 10, 2019
    Inventors: Alexandra Hild, Britta Huebner-Keese, Anne Adden, Roja Ergun
  • Publication number: 20190075811
    Abstract: Provided is a method of making an ethylcellulose oleogel comprising cooling a mixture of ethylcellulose polymer and oil from 100° C. to 35° C. at a rate of 0.6° C./min or slower.
    Type: Application
    Filed: March 27, 2017
    Publication date: March 14, 2019
    Inventors: Alexandra Hild, Matthias Knarr, Britta Huebner-Keese, Roja Ergun
  • Patent number: 10150704
    Abstract: The present invention provides cementitious tile adhesives comprising ordinary Portland cement, sand or another inorganic filler, and from 0.12 to 0.6 wt. % of total solids of one or more polyether group containing crosslinked cellulose ethers. The present invention also provides methods of making the polyether group containing crosslinked cellulose ethers comprising crosslinking a cellulose ether at 90° C. or less, in an inert atmosphere, e.g. nitrogen, in the presence of a polyether group containing crosslinking agent and in the presence of alkali; the process may comprise part of a stepwise addition process of making of a cellulose ether itself in which the crosslinking of the cellulose ethers precedes at least one addition of alkyl halide or alkylene oxide to form, respectively, alkyl or hydroxyalkyl groups on the cellulose.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: December 11, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: Alexandra Hild, Joerg Neubauer, Joern Breckwoldt
  • Publication number: 20180134621
    Abstract: The present invention provides dry mix compositions for use in making gypsum plasters or mortars comprising gypsum, preferably, phosphorous gypsum one or more retarder, and one or more crosslinked cellulose ethers containing polyether groups. The compositions enable the provision of gypsum dry mixes, such as those from phosphorus gypsum, that make gypsum mortars with less stickiness while reducing the amount of cellulose ether in the dry mix.
    Type: Application
    Filed: June 29, 2016
    Publication date: May 17, 2018
    Applicant: Dow Global Technologies LLC
    Inventors: Joern Breckwoldt, Alexandra Hild, Anette Wagner
  • Publication number: 20180099906
    Abstract: The present invention provides cementitious tile adhesives comprising ordinary Portland cement, sand or another inorganic filler, and from 0.12 to 0.6 wt. % of total solids of one or more polyether group containing crosslinked cellulose ethers. The present invention also provides methods of making the polyether group containing crosslinked cellulose ethers comprising crosslinking a cellulose ether at 90° C. or less, in an inert atmosphere, e.g. nitrogen, in the presence of a polyether group containing crosslinking agent and in the presence of alkali; the process may comprise part of a stepwise addition process of making of a cellulose ether itself in which the crosslinking of the cellulose ethers precedes at least one addition of alkyl halide or alkylene oxide to form, respectively, alkyl or hydroxyalkyl groups on the cellulose.
    Type: Application
    Filed: June 29, 2016
    Publication date: April 12, 2018
    Applicant: Dow Global Technologies LLC
    Inventors: Alexandra Hild, Joerg Neubauer, Joern Breckwoldt
  • Publication number: 20170369763
    Abstract: Disclosed is an aqueous cementing slurry composition and a method of use thereof for cementing a pipe or casing in a borehole of a well using an aqueous cementing slurry composition comprising (a) a hydraulic cement, (b) a methylhydroxyethyl cellulose (HEMC) having an ethylene oxide molar substitution (EO MS) of from 0.16 to 0.22 and a methyl degree of substitution (M DS) of from 1.35 to 1.45, (c) water, and optionally (d) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Preferably, the aqueous cementing slurry composition is pumped downwardly into said casing, pumped upwardly into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets.
    Type: Application
    Filed: January 11, 2016
    Publication date: December 28, 2017
    Applicant: Dow Global Technologies LLC
    Inventors: Pramod D. Patil, Alexandra Hild
  • Publication number: 20170306102
    Abstract: A mixture of a cellulose derivative and a liquid diluent is prepared which comprises at least 5 weight percent of the cellulose derivative, based on the total weight of the cellulose derivative and the liquid diluent. The mixing operating causes air to be entrapped in the mixture. The time for at least partially removing entrapped air is reduced by providing a cellulose derivative having a specific surface area of less than 0.20 m2/g measured by BET method for preparing the mixture.
    Type: Application
    Filed: June 26, 2017
    Publication date: October 26, 2017
    Inventors: Bettina Hoelzer, Alexandra Hild, Jorg Theuerkauf, Juergen Hermanns
  • Patent number: 9580517
    Abstract: Prepare lithium carboxymethyl cellulose by treating sodium carboxymethyl cellulose with a weak acid to form an acid from of carboxymethyl cellulose and then treating the acid form of the carboxymethyl cellulose with lithium chloride.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: February 28, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Alexandra Hild, Hans-Juergen Juhl, Roland Adden
  • Publication number: 20160289393
    Abstract: A mixture of a cellulose derivative and a liquid diluent is prepared which comprises at least 5 weight percent of the cellulose derivative, based on the total weight of the cellulose derivative and the liquid diluent. The mixing operating causes air to be entrapped in the mixture. The time for at least partially removing entrapped air is reduced by providing a cellulose derivative having a specific surface area of less than 0.20 m2/g measured by BET method for preparing the mixture.
    Type: Application
    Filed: December 1, 2014
    Publication date: October 6, 2016
    Inventors: Bettina Hoelzer, Alexandra Hild, Juergen Hermanns, Jorg Theuerkauf
  • Publication number: 20160102153
    Abstract: Prepare lithium carboxymethyl cellulose by treating sodium carboxymethyl cellulose with a weak acid to form an acid from of carboxymethyl cellulose and then treating the acid form of the carboxymethyl cellulose with lithium chloride.
    Type: Application
    Filed: May 28, 2014
    Publication date: April 14, 2016
    Applicant: Dow Global Technologies LLC
    Inventors: Alexandra Hild, Hans-Juergen Juhl, Roland Adden
  • Patent number: 9187572
    Abstract: A process for treating a polysaccharide with a dialdehyde in the presence of from 10 to 40 weight percent of water, based on the total weight of polysaccharide and water, is beneficially conducted in a mixing device characterized by a FROUDE number FRw of larger than 11, wherein ?w is the angular frequency in sec-1 and is defined as 2*?*RPM/60, RPM is the rotational speed of the mixing device in revolutions per minute, Rw is the radius of the mixing device in m, and g is the acceleration due to gravity in m/s2.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: November 17, 2015
    Inventors: Alexandra Hild, Matthias Sprehe, Axel Altmann, Roland Adden
  • Publication number: 20130172290
    Abstract: A process for treating a polysaccharide with a dialdehyde in the presence of from 10 to 40 weight percent of water, based on the total weight of polysaccharide and water, is beneficially conducted in a mixing device characterized by a FROUDE number FRw of larger than 11, wherein ?w is the angular frequency in sec-1 and is defined as 2*?*RPM/60, RPM is the rotational speed of the mixing device in revolutions per minute, Rw is the radius of the mixing device in m, and g is the acceleration due to gravity in m/s2.
    Type: Application
    Filed: September 15, 2011
    Publication date: July 4, 2013
    Applicant: Dow Global Technologies LLC
    Inventors: Alexandra Hild, Matthias Sprehe, Axel Altmann, Roland Adden
  • Publication number: 20060205935
    Abstract: The present invention relates to a process for the manufacture of cellulose ethers. The process involves: (a) providing a perforated disk having a plurality of perforations; and (b) forcing feed cellulose ether through at least some of the perforations of the perforated disk, thereby forming compressed cellulose ether. The compressed cellulose ether formed in accordance with the method of the present invention has a higher bulk density and a more uniform particle size distribution than known cellulose ethers prepared by other processes.
    Type: Application
    Filed: January 30, 2006
    Publication date: September 14, 2006
    Inventors: Alexandra Hild, Marc Schmidt, Axel Altmann, Benedikt Langer, Wilhelm Oppermann, Bernd Schriewer, Heiko Thielking