Abstract: A treated polyester fabric comprises a polyester textile and at least one organopolysiloxane and at least one alkylpolyglycoside. The organopolysiloxane and alkylpolyglycoside are added to the textile material, which may be woven or non-woven and may additionally contain other textile fibers, in the form of an aqueous emulsion. The treated fabrics display increased washfastness.
Type:
Application
Filed:
February 6, 2001
Publication date:
August 30, 2001
Applicant:
Wacker-Chemie GmbH
Inventors:
Peter Habereder, Martina Obenhuber, Claus Munique
Abstract: Radiation-curable compositions containing linear organopolysiloxanes bearing (meth)acryloxy groups and a photosensitizer are useful for release coatings particularly release coatings with enhanced adhesion to the substrate onto which they are coated, for example those used for adhesives such as pressure sensitive adhesive labels.
Type:
Application
Filed:
February 2, 2001
Publication date:
August 23, 2001
Applicant:
Wacker-Chemie GmbH
Inventors:
Jochen Dauth, Christian Herzig, Josef Wolferseder, Oliver Zoellner
Abstract: The invention relates to new, cross-linkable compounds containing (A1) linear organopolysiloxanes with aliphatically unsaturated hydrocarbon radicals, said organopolysiloxanes being of general formula (I) R1aR3-aSiO(R2SiO)c[R2Si—Y—SiR2O(R2SiO)c]dSiR3-bR1b, wherein R can be the same or different, and represents a monovalent, optionally halogenated hydrocarbon radical which is free of terminal aliphatic carbon—carbon multiple bonds, R1 represents a monovalent aliphatically unsaturated hydrocarbon radical, Y represents a bivalent organic radical which is free of terminal aliphatic carbon—carbon multiple bonds, a is 0 or 1, b is 0 or 1, and the sum of a+b per molecule is 1 or 2, c is a whole number to the value of 1 to 1000, d is 0 or a whole number to the value of 1 to 10, and optionally, (A2) MQ silicone resins which are soluble in (A1), on the condition that if MQ silicone resins (A2) are not used, the sum of a+b in the formula (I) is 1.3 to 1.
Type:
Grant
Filed:
September 30, 1999
Date of Patent:
August 14, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Christian Herzig, Oliver Zoellner, Friedrich Hockemeyer, Robert Banfic
Abstract: A process for the preparation of halogenated 1,2-disilaethanes of the general formula
X3−nRnSi—CHR1CHR1—SiRnX3−n (I)
in which R may be identical or different and denotes a hydrogen atom or a monovalent optionally substituted hydrocarbon radical having 1 to 40 carbon atom(s) per radical,
R1 may be identical or different and denotes a hydrogen atom or a monovalent optionally substituted hydrocarbon radical having 1 to 40 carbon atom(s) per radical,
X denotes a halogen atom and n denotes 0, 1 or 2,
wherein halogenated 1,2-disilaethenes of the general formula
X3−nRnSi—CR1═CR1—SiRnX3−n (II)
in which R, R1, X and n have the meaning stated above therefor, are reacted with hydrogen in the presence of promoting catalysts. The product is produced in high yield and purity.
Abstract: The building compositions comprise hydrophobicizing powders which contain
A) silica as support material and
B) a hydrophobicizing component which is liquid at 10° C. and comprises
B1) one or more organosilicon compound(s) and, if desired,
B2) solvent and/or
B3) water and emulsifier,
with the proviso that the powders contain from 5 to 80% by weight of organosilicon compound, based on the total weight of the powder.
Type:
Grant
Filed:
November 4, 1998
Date of Patent:
July 31, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Hans Mayer, Ingeborg König-Lumer, Albert Hausberger, Rudolf Hager
Abstract: The invention provides alkenyl-containing siloxane copolymers preparable by reacting:
a compound (1) having at least three aliphatic double bonds, of the general formula
R2(CR3═CH2)x
where
R2 is a trivalent or tetravalent hydrocarbon of silane radical, and
R3 is a hydrogen atom or an alkyl radical, with an organosiloxane having terminal Si-bonded hydrogen atoms, in the presence of a hydrosilylation catalyst,
in a second step reacting:
the resulting hydrocarbon-siloxane copolymers containing Si-bonded hydrogen atoms with &agr;,&ohgr;-dialkenylsiloxane polymer in the presence of a hydrosilylation catalyst,
and, if desired, in a third step, equilibrating:
the resulting alkenyl-containing siloxane copolymers with an organopolysiloxane from the group consisting of linear organopolysiloxanes containing terminal triorganosiloxy groups, linear organopolysiloxanes containing terminal hydroxyl groups, branched organopolysiloxanes with or without hydroxyl groups, cyclic organopolysiloxanes, and copol
Abstract: A device for the optoelectronic classification of semiconductor materials, which has an identifying device 6 that forwards the morphology of the product 1 to be classified to an evaluating device 7 which evaluates the data.
Type:
Grant
Filed:
September 1, 1999
Date of Patent:
July 24, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Dirk Flottmann, Karl Hesse, Matthäus Schantz
Abstract: The invention proposed is an aqueous emulsion comprising the components
(A) organosilicone compositions selected from
(A1) C1-C20-alkyl-C2-C6-alkoxysilanes and
(A2) organopolysiloxane containing alkoxy groups,
(B) organopolysiloxane containing, one or more siloxane units having SiC-bonded radicals containing basic nitrogen, with the proviso that the amine number of the organopolysiloxane is at least 0.01, and
(C) an emulsifier.
The said emulsions are used for making porous mineral building materials hydrophobic.
Abstract: The invention relates to a process for preparing protective-colloid-stabilized vinyl ester or vinyl ester-ethylene polymers in the form of their aqueous dispersions by emulsion polymerization in the presence of one or more protective colloids, which comprises carrying out the polymerization in the presence of a hydrophobic but silane-free protective colloid based on (meth)acrylate polymers with from 80 to 95% by weight, based on the total weight of the copolymer, of acrylic or methacrylic esters of aliphatic alcohols having from 1 to 12 carbon atoms, and from 5 to 20% by weight, based on the total weight of the copolymer, of ethylenically unsaturated mono- or dicarboxylic acids, and with a glass transition temperature Tg of the copolymer of from 60 to 120° C., and with a Fikentscher K value of the copolymer of from 20 to 50.
Abstract: A separation device which has at least one blower device and at least one deflector device can be used to separate large fragments of semiconductor material from small fragments of semiconductor material.
Type:
Grant
Filed:
August 20, 1999
Date of Patent:
July 17, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Dirk Flottmann, Matthäus Schantz, Johann Heiss
Abstract: The invention relates to protective-colloid-stabilized polymer compositions in the form of their aqueous polymer dispersions or water-redispersible polymer powders, which comprise at least one film-forming base polymer and a protective colloid, wherein the protective colloid is a sulfonated condensation product made from unsaturated di- or polycarboxylic acids and from at least one compound selected from the class encompassing diols, polyols, diamines and polyamines.
Type:
Grant
Filed:
August 11, 1999
Date of Patent:
July 17, 2001
Assignee:
Wacker Chemie GmbH
Inventors:
Hans-Peter Weitzel, Peter Tschirner, Reiner Figge, Doris Bauer, Peter Ball
Abstract: The invention relates to novel polymeric organosilicon compounds comprising hydrocarbon radicals with at least one aliphatic carbon-carbon double bond in a terminal position. To produce these compounds, (A) compounds containing at least one aliphatic carbon-carbon double bond per molecule, in a terminal position, are reacted with (B) oligomeric or polymeric organosilicon compounds containing units of the general formula R1R2SiO1/2 and units of the general formula HRSiO and/or HSiO3/2 and possibly units of the general formula R2SiO, where R is a monovalent, possibly substituted, hydrocarbon radical with between 1 and 18 carbon atoms per radical, which is free of aliphatic carbon-carbon double bonds, and R1 is a monovalent hydrocarbon radical with between 1 and 18 carbon atoms per radical which has at least one aliphatic carbon-carbon double bond in a terminal position, subject to the condition that the sum of the units HRSiO and R1R2SiO1/2 on average is greater than 2.
Type:
Grant
Filed:
August 13, 1999
Date of Patent:
July 10, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Christian Herzig, Robert Banfic, Reinhard Stallbauer, Bernward Deubzer, David Heuttner
Abstract: Alkoxy RTV-1 compositions comprise the product of the reaction of
(A) an HO-terminated organopolysiloxane,
(B1) an alkoxysilane which has at least three alkoxy groups and/or its partial hydrolysates, and
(B2) an alkoxysilane which has two alkoxy groups and/or its partial hydrolysates, in the presence of
(C) an acid phosphoric ester of the general formula (I)
(HO)aOP(—O—[(CR12)b—O]c[(CR22)d]e—L—M)(3−a) (I),
where
a is 1 or 2,
R1 and R2 are a hydrogen radical, methyl radical or hydroxyl radical,
b and d are 2 or 3,
c is an integer from 2 to 15,
e is 0 or 1
L comprises a radical —O—, —COO—, —OOC—, —CONR3—, —NR4CO— or —CO—,
R3 and R4 are a hydrogen radical or C1-C10-alkyl radical, and
M is a monovalent, unsubstituted or hydroxyl-, fluorine-, chlorine-, bromine-,
C1-C10-alkoxyalkyl- or cyano-substituted C1-C20-hydrocarbon radical, with the proviso that on any giv
Type:
Grant
Filed:
December 1, 1999
Date of Patent:
July 3, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Christian Finger, Norman Dorsch, Wolfgang Hechtl, Christian Baumgartner, Alfred Heinrich
Abstract: A device for simultaneously separating a multiplicity of wafers from a hard brittle workpiece having a longitudinal axis, with a wire web made from saw wire and with an advancing device which brings about a translational relative movement, which is perpendicular to the longitudinal axis of the workpiece, between the workpiece and the wire web of the wire saw, in the course of which movement the workpiece is passed through the wire web, wherein the wire web is formed from a multiplicity of individual wires, and wherein there is a device for holding and rotating the workpiece about the longitudinal axis.
Type:
Application
Filed:
December 5, 2000
Publication date:
June 28, 2001
Applicant:
Wacker Chemie GmbH
Inventors:
Bernhard Holzmuller, Ulrich Wiese, Jochen Greim
Abstract: In the preparation of microcapsules having shell walls of organopolysiloxane and a core material, the shell walls are produced in situ by hydrolysis and polycondensation of organosilanes and/or their condensates having not more than 4 silicon atoms.
Abstract: Organopolysiloxane particles containing hydrosilylation catalysts (H) and organopolysiloxane (O) and having a particle size of 0.01-10 &mgr;m have, at least in the outermost shell, no glass-transition temperature, softening point or melting point in the range 20° C.-260° C. These organopolysiloxane particles enable the preparation of one-component, addition-crosslinking, thermocurable silicone compositions having a long shelf life.
Type:
Grant
Filed:
November 16, 1999
Date of Patent:
June 26, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Christof Wörner, Frank Achenbach, Jochen Ebenhoch
Abstract: In the process for the direct synthesis of methylchlorosilanes from chloromethane and silicon in the presence of a copper catalyst and promoter, the reaction mixture comprising chloromethane, methylchlorosilanes, and dust-like components comprising copper, promoter and silicon are removed continuously. The dust-like components are separated from the reaction mixture and cooled with liquid chloromethane.
Type:
Grant
Filed:
September 27, 2000
Date of Patent:
June 26, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Wilfried Kalchauer, Herbert Straussberger, Willibald Streckel, Jochen Gross
Abstract: The invention describes new organosilicon compounds containing alkenyl groups, comprising units of the formula
A
a
⁢
R
b
⁡
(
R
1
⁢
O
)
c
⁢
SiO
4
-
(
a
+
b
+
c
)
2
Type:
Grant
Filed:
March 3, 1999
Date of Patent:
June 26, 2001
Assignee:
Wacker-Chemie GmbH
Inventors:
Christian Herzig, Bernward Deubzer, Johann Weis, Kamelia Karlou-Eyrisch, Oskar Nuyken
Abstract: Linear organopolysiloxanes containing alpha, omega terminal Si bonded omega-alkenyl groups or alpha, omega Si bonded H are prepared via hydrosilylation.
Abstract: Curable organopolysiloxane compositions comprising (D) a platinum catalyst selected from the class consisting of
where
R2 is an unsubstituted or substituted diene bonded to platinum via at least one &pgr; bond, having an unbranched or branched chain of from 4 to 12 carbon atoms or a ring of from 6 to 18 carbon atoms,
R3 are identical or different and are a hydrogen atom, halogen atom or a monovalent, unsubstituted or halogen- or cyano-substituted hydrocarbon radical having from 1 to 24 carbon atoms,
R4 are identical or different bivalent, unsubstituted or substituted hydrocarbon radicals having from 1 to 24 carbon atoms,
R5 are identical or different bivalent, unsubstituted or substituted hydrocarbon radicals having from 1 to 12 carbon atoms, silane radicals or siloxane radicals,
R6 are identical or different and are a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 20 carbon atoms,
e is an integer greater than or equal to 1, and
f is 0 or 1.