Patents by Inventor Richard Weidner

Richard Weidner 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: 20210284665
    Abstract: Branched organopolysiloxanes and organopolysiloxanes with low alkoxy content are produced in a first reaction unit by continuous feed of organohalosilanes and alcohol to a reaction vessel surmounted by a distillation column, the vessel containing an excess of water relative to the halogen content of the organohalosilanes. A second reaction unit for removing volatiles from the product from the first reaction unit is also preferably employed.
    Type: Application
    Filed: February 1, 2017
    Publication date: September 16, 2021
    Applicant: WACKER CHEMIE AG
    Inventors: Steffen DÖRRICH, Richard WEIDNER
  • Publication number: 20210284666
    Abstract: Aminopropylalkoxysilanes of the formula H2N—CR2R3—CHR1—CH2—SiR4R5(OR6) ??I, are synthesized by hydrosilylating silazanes of the formulae and mixtures thereof, in the presence of a catalyst containing rhodium and/or iridium compounds, and then reacted with alcohol to form an aminopropylalkoxysilane.
    Type: Application
    Filed: February 6, 2018
    Publication date: September 16, 2021
    Applicant: WACKER CHEMIE AG
    Inventors: Elke FRITZ-LANGHALS, Richard WEIDNER
  • Patent number: 11084964
    Abstract: The invention provides circular processes using siloxanes as high-temperature heat transfer fluid (HTF), wherein the siloxanes go over from the state of the supercooled liquid into the state of the high-density supercritical fluid by means of heat uptake without a phase transition and energy is then transferred as energy without a phase transition.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: August 10, 2021
    Assignee: WACKER CHEMIE AG
    Inventors: Harald Voit, Steffen Dörrich, Martin Petri, Erich Schaffer, Richard Weidner
  • Publication number: 20210189210
    Abstract: Silicone heat transfer fluids having a narrow range of M:D units and a specified proportion of cyclic siloxanes are able to be used at heat transfer fluids at high temperatures without reaching a supercritical state.
    Type: Application
    Filed: October 13, 2017
    Publication date: June 24, 2021
    Applicant: WACKER CHEMIE AG
    Inventors: Steffen DOERRICH, Erich SCHAFFER, Harald VOIT, Richard WEIDNER
  • Publication number: 20210179641
    Abstract: Dichlorosilane and trichlorosilane are dehydrogenated at elevated temperature in the presence of an ammonium or phosphonium salt as a catalyst, and a halogenated hydrocarbon or hydrogen halide. The method may be used to synthesize organochlorosilane.
    Type: Application
    Filed: September 6, 2018
    Publication date: June 17, 2021
    Applicant: WACKER CHEMIE AG
    Inventors: Jan TILLMANN, Richard WEIDNER
  • Publication number: 20210017197
    Abstract: Siloxanes are prepared by reacting: a compound A with a compound B or a compound A with a compound C or a compound B with a compound C or a compound C alone, in the presence of a compound D at ?40° C., wherein compound A is a silane or a siloxane having at least one silicon-bonded hydrogen atom, compound B is a silane or a siloxane having at least one silicon-bonded alkoxy moiety, compound C is a silane or a siloxane having at least one silicon-bonded hydrogen atom and at least one silicon-bonded alkoxy moiety, and compound D is a cationic Si(II) compound.
    Type: Application
    Filed: October 6, 2017
    Publication date: January 21, 2021
    Applicant: WACKER CHEMIE AG
    Inventors: Elke FRITZ-LANGHALS, Richard WEIDNER
  • Patent number: 10843965
    Abstract: Hydrophobic shaped silica bodies having low density and low thermal conductivity are produced by forming a dispersion of silica in a solution of binder and organic solvent, and removing the solvent and shaping to form a shaped body. The shaped bodies retain their hydrophobicity, are stable with regards to shape, and are useful in acoustic and thermal insulation.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: November 24, 2020
    Assignee: WACKER CHEMIE AG
    Inventors: Dominik Jantke, Richard Weidner, Konrad Hindelang
  • Publication number: 20200308051
    Abstract: Hydrophobic shaped silica bodies having low density and low thermal conductivity are produced by forming a dispersion of silica in a solution of binder and organic solvent, and removing the solvent and shaping to form a shaped body. The shaped bodies retain their hydrophobicity, are stable with regards to shape, and are useful in acoustic and thermal insulation.
    Type: Application
    Filed: August 9, 2016
    Publication date: October 1, 2020
    Applicant: Wacker Chemie AG
    Inventors: Dominik JANTKE, Richard WEIDNER, Konrad HINDELANG
  • Patent number: 10766779
    Abstract: It is an object of the invention to provide a rapid and economically viable process which is notable for efficient use of material, especially of the silylating agent, and by means of which organically modified lyo- or aerogels are obtained in a rapid and simple manner. This object is achieved by virtue of the invention providing a process for producing organically modified gels selected from lyo- and aerosols by (i) emulsifying a basic polar phase comprising water and starting materials for silicatic gels in a nonpolar phase containing a water-immiscible precursor for an active silylating agent, (ii) starting formation of gel and ageing by lowering the pH, and then (iii) starting the silylation and the exchange of solvent by lowering the pH. If the gels are aerogels, the gels provided can be used for thermal and/or acoustic insulation.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: September 8, 2020
    Assignee: Wacker Chemie AG
    Inventors: Dominik Jantke, Konrad Hindelang, Richard Weidner
  • Patent number: 10759666
    Abstract: The problem addressed by the invention is that of producing aerogels which have as high and permanent a hydrophobicity as possible and which have a reduced combustibility, that is as low a carbon content as possible, and are simultaneously less rigid and brittle than known systems, i.e. which with reduced combustibility have a high flexibility and high stability at the same time, that is high mechanical load-bearing capacity. Said problem is solved in that the invention provides gels chosen from lyogel or aerogel, which are synthesised from oxide units and [RxSiO(4-x)/2] units, wherein the primary particles have a change of concentration in [RxSiO(4-x)/2] units from the inside to the outside, wherein x can be the same or different and is 1 or 2, and R can be the same or different and is hydrogen or an organic substituted or unsubstituted radical, and wherein the oxide units contain [SiO4/2] units, and a method for producing same.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: September 1, 2020
    Assignee: Wacker Chemie AG
    Inventors: Konrad Hindelang, Dominik Jantke, Richard Weidner
  • Patent number: 10730893
    Abstract: The invention relates to a hydrosilylatable mixture M containing: (A) a compound with at least one hydrogen atom directly bonded to Si, (B) a compound containing at least one carbon-carbon multiple bond, and (C) a compound containing at least one cationic Si(II) group. The invention also relates to a method for hydrosilylating the mixture M.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: August 4, 2020
    Assignee: WACKER CHEMIE AG
    Inventors: Elke Fritz-Langhals, Peter Jutzi, Richard Weidner
  • Publication number: 20200181470
    Abstract: The invention provides circular processes using siloxanes as high-temperature heat transfer fluid (HTF), wherein the siloxanes go over from the state of the supercooled liquid into the state of the high-density supercritical fluid by means of heat uptake without a phase transition and energy is then transferred as energy without a phase transition.
    Type: Application
    Filed: August 11, 2017
    Publication date: June 11, 2020
    Inventors: Harald Voit, Steffen Dörrich, Martin Petri, Erich Schaffer, Richard Weidner
  • Publication number: 20200172706
    Abstract: The invention relates to a method for producing hydrophilic silicia moulded bodies, in which i) a mixture containing hydrophilic silicic acid is added at a maximum temperature of 55° C. to hydrophobic means and ii) the mixture obtained in step i) is compacted after a maximum storage time of 30 days to form moulded bodies, iii) during steps ii and iii and until the moulded bodies are used, the temperature is at a maximum of 55° C.
    Type: Application
    Filed: February 27, 2017
    Publication date: June 4, 2020
    Inventors: Konrad Hindelang, Dominik Jantke, Richard Weidner
  • Patent number: 10618815
    Abstract: It is an object of the invention to provide an economically viable process for the production of hydrophobized aerogels which works both inexpensively and in a resource-conserving manner. 2.2. This object is achieved by the provision of a process for producing organically modified aerogels by producing a sol containing [SiO4/2] units and [RxSiO(4?X)/2] a units, where x may be the same or different and is 1, 2 or 3, and R may be the same or different and is hydrogen or an organic substituted or unsubstituted radical, using the sol to form a gel, surface-modifying the gel obtained in the presence of more than 0.1% by weight of a phase modifier in a mixture comprising organosiloxane and initiator, wherein the mixture contains at least 20% by weight of organosiloxane and wherein the initiator consists of acid or organosiloxane or mixtures thereof and the gels obtained are dried. 2.3. The aerogels provided can be used as insulating materials, especially in thermal insulation.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: April 14, 2020
    Assignee: Wacker Chemie AG
    Inventors: Konrad Hindelang, Torsten Gottschalk-Gaudig, Dominik Jantke, Richard Weidner
  • Publication number: 20200023337
    Abstract: The invention relates to a method for absorbing liquids (P) containing compounds (V) selected from water and alkanols, the oxygen content of which in weight percentage is at least 27%, said content being present in the loan of hydroxy groups or hydroxy and ether groups, into a solid silicone-containing polymer (P) which contains at least one siloxane unit of the general formula I (R1b(X)cSiO[4?(b+c)]/2) and no units or at least one unit of the general formula II (R2aSiO4?a)/2), in which R1, R2, x, a, b, and c have the meanings described in claim 1, wherein the liquids (P) are brought into contact with the solid silicone-containing polymer (P).
    Type: Application
    Filed: February 3, 2017
    Publication date: January 23, 2020
    Inventors: Elke Fritz-Langhals, Richard Weidner
  • Publication number: 20200001241
    Abstract: The invention relates to a method for producing thin, porous membranes from crosslinkable silicone compositions (S), in which: in a first step, a mixture of the silicone compositions (S) with a pore forming agent (P) and, where appropriate, solvent (L) is formed; in a second step, the mixture is placed in a mould and the silicone composition (S) is vulcanised and any solvent (L) present is removed, producing a crosslinked membrane with pores, in a third step, the pore forming agent (P) in removed from the crosslinked membrane; and in a fourth step, the pores of the membrane are opened by stretching. The invention also relates to the membranes produced in this manner and to the use thereof for separating mixtures, in wound plasters, as packaging materials and as textile membranes.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 2, 2020
    Inventors: Christian Tobias Anger, Barbara Moser, Richard Weidner
  • Publication number: 20190375942
    Abstract: Granular and/or shaped hydrophobic silica useful for thermal insulation materials are prepared by mixing hydrophilic silica with a hydrophobicizing agent at low temperature so the hydrophobicizing agent does not appreciably react, followed by deaeration and compaction.
    Type: Application
    Filed: February 27, 2017
    Publication date: December 12, 2019
    Applicant: WACKER CHEMIE AG.
    Inventors: Konrad HINDELANG, Dominik JANTKE, Richard WEIDNER
  • Patent number: 10351676
    Abstract: The present invention relates to a method for producing amino acid group-containing organosilicon compounds (O), wherein the epoxy group-bearing organosilicon compounds are reacted with a stoichiometric excess of amino acids or the salts thereof in the presence of an alcohol.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: July 16, 2019
    Assignee: Wacker Chemie AG
    Inventors: Elke Fritz-Langhals, Richard Weidner
  • Patent number: 10351747
    Abstract: The invention relates to a method for operating a system at an operating temperature of between 300° C. and 500° C., using a heat transfer fluid comprising branched siloxanes of general formula (I) (R3SiO1/2), (SiO4/2) in which w represents integral values of between 4 and 20, z represents integral values of between 1 and 15, and R represents a methyl group, the sum of the fractions of all siloxanes of general formula (1) being at least 95 mass %, in relation to the whole heat transfer fluid.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: July 16, 2019
    Assignee: Wacker Chemie AG
    Inventors: Steffen Doerrich, Richard Weidner, Sven Heidsieck, Bernhard Rieger
  • Publication number: 20190071459
    Abstract: The invention relates to a hydrosilylatable mixture M containing: (A) a compound with at least one hydrogen atom directly bonded to Si, (B) a compound containing at least one carbon-carbon multiple bond, and (C) a compound containing at least one cationic Si(II) group. The invention also relates to a method for hydrosilylating the mixture M.
    Type: Application
    Filed: March 10, 2017
    Publication date: March 7, 2019
    Inventors: Elke FRITZ-LANGHALS, Peter Jutzi, Richard Weidner