Patents Assigned to Wacker-Chemie GmbH
  • Method of producing a polycrystalline silicon rod
    Patent number: 6350313
    Abstract: A method of producing a polycrystalline silicon rod is by depositing silicon on a carrier rod and cutting to size a molding produced in the process. In order that the silicon rod is given a rod end which is free of cracks and flaking, the rod is rotated about its longitudinal axis and cut through with a parting tool.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: February 26, 2002
    Assignee: Wacker-Chemie GmbH
    Inventors: Heinz Kraus, Matthäus Schantz, Peter Niedermeier
  • Crosslinkable organopolysiloxane materials
    Patent number: 6348557
    Abstract: The invention relates to crosslinkable materials based on organopolysiloxanes. Said materials are characterized in that in addition to organopolysiloxanes they contain at least one low-molecular organosilicon compound with 2 to 17 silicon atoms comprising units of the formula (I) R1aR2b(OR3)cSiO4−(a+b+c)/2, R1, R2, R3, a, b and c having the meaning given in claim 1 provided that low-molecular organosilicon compounds comprising units of the formula (I) where b is 0 have at least one unit of the formula (I) in which a is 0 or 1, and at least one unit of the formula (I) in which a is 3.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: February 19, 2002
    Assignee: Wacker-Chemie GmbH
    Inventors: Herbert Barthel, August Altenbuchner, Johann Schuster, Mario Heinemann, Lutz Eismann, Otto Rothenaicher
  • Siliconimides containing Si-H groups
    Patent number: 6344533
    Abstract: The invention relates to a method for producing Si—H containing siliconimides by achieving balanced proportions of organosilicon compounds containing Si—H groups, in siliconimides. It also relates to siliconimides containing Si—H groups and their applications as Si—H comb-crosslinking agents, as a constitutional unit for spread coating paper or electrical components, in adhesive material, moulding material, film material, coating material, laminated material, tough elastomers and composite matrix material.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: February 5, 2002
    Assignee: Wacker-Chemie GmbH
    Inventors: Frank Achenbach, Armin Fehn, Pius Tosch
  • Process for working up residues from the direct synthesis of organochlorosilanes
    Patent number: 6344578
    Abstract: The invention relates to a process for preparing alkylchlorosilanes from the liquid constituents of the residues from the direct synthesis of alkylchlorosilanes which have a boiling point of above 70° C. at 1013 hPa and comprise disilanes, in which the residues are heated with hydrogen chloride and silicon at temperatures of at least 300° C., with at least 10% by weight of trichlorosilane and/or tetrachlorosilane, based on the weight of the alkylchlorosilanes formed, being formed at the same time.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: February 5, 2002
    Assignee: Wacker-Chemie GmbH
    Inventors: Konrad Mautner, Bernd Köhler, Gudrun Tamme
  • Process for the preparation of silarylenesiloxane-diorganosiloxane copolymers
    Publication number: 20020013441
    Abstract: Linear-chain copolysiloxanes comprising units of the general formulae (1) and (2),
    Type: Application
    Filed: June 13, 2001
    Publication date: January 31, 2002
    Applicant: Wacker-Chemie GmbH
    Inventors: Philipp Muller, Norbert Egerter
  • Functionalized copolymers for preparing coating compositions
    Publication number: 20020007009
    Abstract: The invention provides functionalized copolymers in the form of their aqueous dispersions or water-redispersible powders, based on
    Type: Application
    Filed: May 7, 2001
    Publication date: January 17, 2002
    Applicant: Wacker-Chemie GmbH
    Inventors: Kurt Stark, Peter Tschirner, Peter Ball, Klaus Buppelmann, Udo Kotschi
  • Self-adhesive addition-crosslinking silicone compositions
    Publication number: 20010049414
    Abstract: The invention relates to self-adhesive addition-crosslinking silicone compositions which contain the components
    Type: Application
    Filed: March 29, 2001
    Publication date: December 6, 2001
    Applicant: Wacker-Chemie GmbH
    Inventors: Philipp Muller, Georg Eberl
  • Aminosiloxane polyether polymers
    Patent number: 6326061
    Abstract: Textiles treated with a textile treating composition containing a silane or organosiloxane containing both an Si—C bonded aminoalkyl group containing a primary, secondary, or tertiary amine group, and at least one Si—O—C bonded (iso) oxyalkyl radical exhibit excellent soft hand while maintaining superior water-wettability.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: December 4, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Hans-Jurgen Lautenschlager, Anton Heller
  • Process for preparing rubber compositions comprising solid material
    Publication number: 20010047049
    Abstract: The invention relates to a process for preparing rubber compositions which include gas-containing solid material, in which the solid material is compacted by degassing immediately prior to mixing with rubber base polymer.
    Type: Application
    Filed: May 22, 2001
    Publication date: November 29, 2001
    Applicant: Wacker-Chemie GmbH
    Inventors: Manfred Heisler, Helmut Huber, Alois Schlierf, Christoph Schoffel, Johann Schuster
  • Process for the direct synthesis of organochlorosilanes using recovered CuCl catalyst
    Patent number: 6323357
    Abstract: A process for the direct synthesis of organochlorosilanes using CuCl prepared from the copper-containing residues from the direct synthesis of organochlorosilanes, where, in the preparation of the CuCl, in a first step, copper from an aqueous suspension of the copper-containing residues is oxidized to CuCl2 using mineral acid and oxidant, where mineral acid or oxidant or mineral acid and oxidant contain chlorine, giving an aqueous CuCl2 solution, and in a second step, the aqueous CuCl2 solution is reduced to CuCl using elemental iron.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: November 27, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Wilfried Kalchauer, Herbert Straussberger, Willibald Streckel, Ulrich Goetze
  • Process for preparing silicon dioxide
    Patent number: 6322765
    Abstract: The invention relates to a process for preparing highly disperse silicon dioxide by combustion of organochlorosilicon compounds, which comprises transporting a liquid which contains at least one hydrocarbon compound and at least one organochlorosilicon compound into a burner and burning the liquid there in the presence of an oxygen-containing gas and without supply of water.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: November 27, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Ernst Mühlhofer, Carl-Heinz Ehrke, Gerhard Kalchgruber, Botho Druse
  • Process for the continuous production of highly viscous filler-containing silicone compositions
    Patent number: 6323262
    Abstract: In a continuous process for producing filler-containing silicone compositions (P), a silicone composition (E) comprising filler (F1) is mixed with filler (F2).
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: November 27, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Frank Achenbach, Manfred Heisler, Armin Fehn, Christof Wörner
  • Process for the direct synthesis of organochlorosilanes using recovered CuCI catalyst
    Publication number: 20010041805
    Abstract: A process for the direct synthesis of organochlorosilanes using CuCl prepared from the copper-containing residues from the direct synthesis of organochlorosilanes, where, in the preparation of the CuCl, in a first step, copper from an aqueous suspension of the copper-containing residues is oxidized to CuCl2 using mineral acid and oxidant, where mineral acid or oxidant or mineral acid and oxidant contain chlorine, giving an aqueous CuCl2 solution, and in a second step, the aqueous CuCl2 solution is reduced to CuCl using elemental iron.
    Type: Application
    Filed: March 21, 2001
    Publication date: November 15, 2001
    Applicant: Wacker-Chemie GmbH
    Inventors: Wilfried Kalchauer, Herbert Straussberger, Willibald Streckel, Ulrich Goetze
  • Apparatus and method for fluidizable solids metering and pneumatic conveyance
    Publication number: 20010041102
    Abstract: The invention relates to a pneumatic conveying system, comprising an apparatus for gravimetric solids metering, wherein a readily fluidizable material to be conveyed is fed to a conveying line, culminating with a mixer into which the fluidizable material is conveyed from the conveying line. A degassing screw located between the gravimetric solids metering system and the mixer allow for transfer of conveyed solids into the mixer without pressure buildup and without altering the weight ratio of the filler to product.
    Type: Application
    Filed: April 30, 2001
    Publication date: November 15, 2001
    Applicant: Wacker-Chemie GmbH
    Inventors: Helmut Huber, Helmut Wohrl, Johann Schuster
  • Crosslinkable protective colloids for use in the polymerization of unsaturated monomers
    Patent number: 6316568
    Abstract: A water-soluble, crosslinkable protective colloid is provided having a weight-average molecular weight of least than 500,000 comprising: a) 20 to 95% by weight of monomer units containing sulphonic acid or sulphonate groups, b) 4 to 80% by weight of monomer units containing N-methylol or N-alkoxymethyl groups, and c) 0.1 to 20% by weight of hydrophobic monomer units such as water insoluble ethylenically unsaturated compounds and the hydrophobic end groups of initiator radicals or regulator molecules. Optionally, up to 50% by weight of the monomer units containing sulphonic acid or sulphonate groups can be replaced by monomer units containing carboxyl groups or monomer units containing amide groups.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: November 13, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Klaus Kohlammer, Gerhard Koegler, Monika Rockinger, Walter Dobler
  • Addition-crosslinkable silicone compositions comprising low-molecular weight alkenyl-terminated polydiorganosiloxanes
    Publication number: 20010039323
    Abstract: The invention relates to addition-crosslinkable silicone compositions which comprise:
    Type: Application
    Filed: March 21, 2001
    Publication date: November 8, 2001
    Applicant: Wacker-Chemie GmbH
    Inventors: Frank Achenbach, Christof Worner
  • Organosilicon compounds, processes for their preparation, and their use in crosslinkable organopolysiloxane compositions
    Patent number: 6313217
    Abstract: The invention relates to aliphatically unsaturated organosilicon compounds having 2 to 17 silicon atoms, to processes for their preparation and to their use in crosslinkable organopolysiloxane compositions, especially in compositions which can be crosslinked peroxidically or by hydrosilylation.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: November 6, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Herbert Barthel, Johann Schuster, Richard Weidner, Michael Stepp, Volker Frey
  • Basic condensation catalyst systems for siloxanes
    Patent number: 6313253
    Abstract: The invention relates to a process for the condensation of compounds which carry silanol groups and have at least one unit of the general formula (III) AcEdSiO(4-c-d)/2  (III) in which A is a hydroxyl group, E is an inert radical, c is 1, 2, 3 or 4 and d is 0, 1 or 2, with the proviso that c+d ≦4, in which higher molecular weight organosiloxane compounds are prepared by employing with a catalyst system comprising a catalyst which is chosen from basic alkali metal and alkaline earth metal compounds and a cocatalyst which is an at least bidentate chelating ligand and contains units of the general formula (I) N—R1—N  (I)  in which R1 is a divalent linear, cyclic and/or aromatic C1-to C30-hydrocarbon radical.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: November 6, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Frank Baumann, Bernward Duebzer, Chantal Delagnes
  • Method and device for processing semiconductor material
    Patent number: 6313013
    Abstract: There are a device and method for protecting semiconductor material, wherein semiconductor material is processed on a surface of stabilized ice made from ultrapure water and particles of semiconductor material.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: November 6, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Dirk Flottmann, Gerhard Ast, Reinhard Wolf
  • Method for producing a semiconductor material
    Patent number: 6309467
    Abstract: Semiconductor material has a low metal concentration at the surface. The semiconductor material has an iron content and/or chromium content on the surface of less than 6.66×10−11 g/cm2. A method for producing this semiconductor material includes a preliminary cleaning, a main cleaning and hydrophilization. A device for use in this method has a container with pyramid-shaped recesses at the bottom.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: October 30, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Hanns Wochner, Theresia Bauer, Josef Dietl, Werner Ott, Herbert Pichler, Wilhelm Schmidbauer, Dieter Seifert, Susanne Weizbauer