Patents by Inventor Thomas Hierstetter

Thomas Hierstetter 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: 11098197
    Abstract: Irradiation curable addition crosslinkable organosilicon compositions employ a cyclopentadienyl platinum photocatalyst, and are rendered storage stable by incorporation of selected organophosphorus compounds, while cure is substantially unaffected.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: August 24, 2021
    Assignee: WACKER CHEMIE AG
    Inventors: Claus Hoefl, Thomas Hierstetter, Johann Schuster, Kerstin Zeiler
  • Publication number: 20200299509
    Abstract: Irradiation curable addition crosslinkable organosilicon compositions employ a cyclopentadienyl platinum photocatalyst, and are rendered storage stable by incorporation of selected organophosphorus compounds, while cure is substantially unaffected.
    Type: Application
    Filed: August 4, 2017
    Publication date: September 24, 2020
    Applicant: WACKER CHEMIE AG
    Inventors: Claus HOEFL, Thomas HIERSTETTER, Johann SCHUSTER, Kerstin ZEILER
  • Patent number: 8287174
    Abstract: Base compositions for addition-crosslinking silicone compositions are continuously produced by, in a first stage, homogeneously mixing and kneading organopolysiloxanes and flowable prehydrophobized oxidic reinforcing fillers in a continuous kneading machine with kneading chambers arranged alongside one another. In a second, downstream, stage of the process, the compositions produced in the first stage are subjected to aftertreatment in a mixing apparatus in which the compositions have been subjected to a mixing procedure with introduction of shear force.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: October 16, 2012
    Assignee: Wacker Chemie AG
    Inventors: Thomas Frese, Thomas Hierstetter, Johann Schuster, Christof Woerner
  • Patent number: 8158707
    Abstract: Base compositions for silicone compositions with viscosity <500,000 mPas are continuously produced by, in a first stage, homogeneously mixing and kneading organopolysiloxanes (A) and prehydrophobized oxidic reinforcing fillers (B) in a continuous kneading cascade with kneading chambers arranged alongside one another, and in a second downstream stage, the compositions produced in the first stage of the process are subjected to aftertreatment in a mixing apparatus where the compositions have been subjected to a mixing procedure with introduction of shear force.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: April 17, 2012
    Assignee: Wacker Chemie AG
    Inventors: Thomas Hierstetter, Johann Schuster, Richard Birneder
  • Publication number: 20100160543
    Abstract: Base compositions for addition-crosslinking silicone compositions are continuously produced by, in a first stage, homogeneously mixing and kneading organopolysiloxanes and flowable prehydrophobized oxidic reinforcing fillers in a continuous kneading machine with kneading chambers arranged alongside one another. In a second, downstream, stage of the process, the compositions produced in the first stage are subjected to aftertreatment in a mixing apparatus in which the compositions have been subjected to a mixing procedure with introduction of shear force.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Applicant: WACKER CHEMIE AG
    Inventors: Thomas Frese, Thomas Hierstetter, Johann Schuster, Christof Woerner
  • Publication number: 20100160493
    Abstract: Base compositions for silicone compositions with viscosity <500,000 mPas are continuously produced by, in a first stage, homogeneously mixing and kneading organopolysiloxanes (A) and prehydrophobized oxidic reinforcing fillers (B) in a continuous kneading cascade with kneading chambers arranged alongside one another, and in a second downstream stage, the compositions produced in the first stage of the process are subjected to aftertreatment in a mixing apparatus where the compositions have been subjected to a mixing procedure with introduction of shear force.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Applicant: WACKER CHEMIE AG
    Inventors: Thomas Hierstetter, Johann Schuster, Richard Birneder
  • Patent number: 6911495
    Abstract: A process for the continuous preparation of addition-crosslinking silicone rubbers from a base composition containing at least one polyvinyl polysiloxane and at least 10% by weight, based on the liquid silicone rubber, of hydrophobicized filler, by removing the base composition from a container whose volume reduces proportionally with the amount removed, and conveying the composition by way of a pump with a positive pressure difference to two further pumps (4) which convey the base composition onward, so a component A is prepared continuously by admixing at least one metal catalyst with one stream of the base composition, and a component B is prepared continuously and simultaneously by admixing the crosslinker and inhibitor with a second stream of the base composition, where the metal catalyst, crosslinker, and inhibitor are fed by way of a feed unit which meters in each of the substances.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: June 28, 2005
    Assignee: Wacker-Chemie GmbH
    Inventors: Thomas Hierstetter, Johann Schuster, Gerhard Skroch, Helmut Woehrl
  • Publication number: 20040006173
    Abstract: A process for the continuous preparation of addition-crosslinking silicone rubbers from a base composition containing at least one polyvinyl polysiloxane and at least 10% by weight, based on the liquid silicone rubber, of hydrophobicized filler, by removing the base composition from a container whose volume reduces proportionally with the amount removed, and conveying the composition by way of a pump with a positive pressure difference to two further pumps (4) which convey the base composition onward, so a component A is prepared continuously by admixing at least one metal catalyst with one stream of the base composition, and a component B is prepared continuously and simultaneously by admixing the crosslinker and inhibitor with a second stream of the base composition, where the metal catalyst, crosslinker, and inhibitor are fed by way of a feed unit which meters in each of the substances.
    Type: Application
    Filed: May 23, 2003
    Publication date: January 8, 2004
    Applicant: Wacker-Chemie GmbH
    Inventors: Thomas Hierstetter, Johann Schuster, Gerhard Skroch, Helmut Woehrl
  • Patent number: 6040383
    Abstract: The invention describes novel organosilicon compounds containing oligoisobutylene or polyisobutylene groups and comprising at least one unit of the formulaA.sub.a R.sub.b SiX.sub.c O.sub.4-(a+b+c)/2, (I)where R are identical or different and are each a monovalent, divalent or trivalent unsubstituted or substituted hydrocarbon radical, X are identical or different and are each a chlorine atom or a radical of the formula --OR.sup.1, where R.sup.1 is a hydrogen atom or an alkyl radical which may be substituted by an ether oxygen atom, or a radical of the formula--R.sup.2 ([OCH(CH.sub.3)CH.sub.2 ].sub.e [OCH.sub.2 CH.sub.2 ].sub.f [O(CH.sub.2).sub.4 ].sub.g OR.sup.3).sub.y (II)where R.sup.2 is a divalent or trivalent, unsubstituted or substituted hydrocarbon radical which is substituted by one or more groups of the formulae--(C.dbd.O)--O--, --(C.dbd.O)--NR.sup.3 --, --NR.sup.3 --, --O--, --S--,R.sup.3 is a hydrogen atom or R.sup.1 or a radical of the formula--(C.dbd.O)--R.sup.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: March 21, 2000
    Assignee: Wacker-Chemie GmbH
    Inventors: Jochen Dauth, Thomas Hierstetter, Bernward Deubzer, Petra Gratzl
  • Patent number: 5998650
    Abstract: Organosilicon compounds with amino-alkylene oxide functional groups containing amino groups are disclosed.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: December 7, 1999
    Assignee: Wacker-Chemie GmbH
    Inventors: Robert Schrock, Thomas Hierstetter, Jochen Dauth
  • Patent number: 5990334
    Abstract: Ionic organosilicon compounds comprising siloxane units of the formulaA.sub.a R.sub.b X.sub.c SiO.sub.(4-a-b-c)/2 (I),in whichR is an identical or different, optionally halogenated hydrocarbon radicals having 1 to 12 carbon atoms or radicals of the formulae--R'--((NHCH.sub.2 CH.sub.2).sub.o --(N.sup.+ H.sub.2 CH.sub.2 CH.sub.2).sub.p --N.sup.(x+q-2)+ H.sub.x R".sub.q).sub.d-1 (II)--R'--(SH).sub.d-1 (III)or--R'--(Z--C (O)--CR'"=CH.sub.2).sub.d-1 (IV)in whichR', R", Z, R'", o, p, q, x, d, X and A have the meaning given in claim 1 anda is 0 or 1,b is 0, 1, 2 or 3,c is 0, 1, 2 or 3and the sum a+b+c is.ltoreq.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: November 23, 1999
    Assignee: Wacker-Chemie GmbH
    Inventors: Thomas Hierstetter, Jochen Dauth, Birgit Peschanel, Bernward Deubzer
  • Patent number: 5840951
    Abstract: Organosilicon compounds containing amino groups, their preparation and their useOrganosilicon compounds containing amino groups and comprisinga) siloxane units of the formulaR.sub.a Si(OR.sup.1).sub.b O.sub.(4-a-b)/2 (I)andb) at least one unit per molecule selected from the group consisting of units of the formulaeAR.sub.C SiO.sub.(4-c-1)/2 (II),O.sub.(4-c-1)/2 R.sub.C Si--A.sup.1 --R.sub.C SiO.sub.(4-c-1)/2 (III)or ##STR1## where R is an identical or different hydrocarbon radical which has from 1 to 18 carbon atoms, optionally substituted by halogen atoms, alkoxy groups or hydroxy groups where the hydrocarbon radical is optionally interrupted by oxygen atoms,R.sup.1 is an identical or different alkyl radical which is optionally interrupted by oxygen atoms,a is 0, 1, 2 or 3 andb is 0, 1, 2 or 3, with the proviso that the sum a+b is not greater than 3, andc is 0, 1 or 2,A is a radical of the formula--R.sup.2 R.sup.3.sub.z N(--CR.sup.4.sub.2 --R.sup.5).sub.(2-z) (V),A.sup.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: November 24, 1998
    Assignee: Wacker-Chemie GmbH
    Inventors: Thomas Hierstetter, Jochen Dauth, Joerg Pfister, Bernward Deubzer
  • Patent number: 5593787
    Abstract: The present invention relates to organosilicon compounds containing (meth)acryloxy groups which can be prepared in a simple manner with high selectivity using readily accessible starting substances. The organopolysiloxanes containing (meth)acryloxy groups rapidly crosslink in the presence of a photoinitiator and light. The compounds of the present invention may be employed in the production of coatings.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: January 14, 1997
    Assignee: Wacker-Chemie GmbH
    Inventors: Jochen Dauth, Christian Herzig, Bernward Deubzer, Thomas Hierstetter, Petra Gratzl