Patents by Inventor Ralf Laven
Ralf Laven 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).
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Patent number: 6534667Abstract: A composition which comprises a mixture of water-soluble, amino-functional silicon compounds which are essentially free from alkoxy groups, water, optionally a content of alcohol and optionally a content of acid, the composition comprising silicon compounds of the general formula I: NH2[CH2)2NH]x(CH2)3SiO1.5 (I) in which x is 0, 1 or 2, and of the general formula II: (SiO1.5(CH2)3[NH(CH2)2]yNH[(CH2)2NH]x(CH2)3Si)1.5 (II) in which y and z are 0, 1 or 2 and are identical or different. The compositions are obtainable by mixing corresponding aminoalkoxy silanes, hydrolyzing the mixture and removing the hydrolysis alcohol formed as a result. The invention furthermore relates to a process for the preparation of the compositions and to their use in a wide variety of applications.Type: GrantFiled: February 28, 2000Date of Patent: March 18, 2003Assignee: Degussa- AGInventors: Burkhard Standke, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Ralf Laven, Helmut Mack, Jaroslaw Monkiewicz, Günter Switalla
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Patent number: 6528585Abstract: The invention relates to a process for preparing crosslinkable polymers containing silane groups having at least one hydrolyzable radical by free-radical-initiated grafting of the base polymers with an olefinically unsaturated silane having at least one hydrolyzable radical, wherein the grafting is carried out in the presence of (a) an alkylsilane of the formula I, R1(SiR2nX3−n)m, (I) where R1 is a monovalent hydrocarbon radical having from 1 to 33 carbon atoms or a divalent hydrocarbon radical having from 4 to 24 carbon atoms, R2 is a hydrocarbon radical having from 1 to 10 carbon atoms, X are identical or different hydrolyzable radicals, n is 0, 1 or 2 and m is 1 or 2 and/or (b) a fluoroalkylsilane of the formula R3xSiR4yXz, (II) where R3 is a fluoroalkyl radical, R4 is an alkyl radical and X is a hydrolyzable radical, x is an integer from 1 to 3, y is 0, 1 or 2 and z is an integer from 1 to 3, with the proviso that the sum x+y+z&equaType: GrantFiled: July 19, 2001Date of Patent: March 4, 2003Assignee: Degussa AGInventors: Burkhard Standke, Jaroslaw Monkiewicz, Albert-Johannes Frings, Ralf Laven, Roland Edelmann, Peter Jenkner, Helmut Mack, Michael Horn
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Publication number: 20020127415Abstract: A process for modifying the functionality of organofunctional substrate surfaces by first reacting the organofunctional group of a silicon compound A with the surface of a substrate, where the silicon compound A bears at least one organofunctional group and, as other groups, bears at least one chloro, alkoxy, carboxy or hydroxyl group, then applying to the pretreated substrate an organofunctional silicon compound B, where the silicon compounds A and B are identical or different and the silicon compound B bears at least one chloro, alkoxy, carboxy or hydroxyl group. The process produces surface-modified substrates for other applications.Type: ApplicationFiled: January 4, 2002Publication date: September 12, 2002Applicant: DEGUSSA AGInventors: Burkhard Standke, Jaroslaw Monkiewicz, Albert-Johannes Frings, Ralf Laven, Roland Edelmann, Peter Jenkner, Helmut Mack, Michael Horn
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Patent number: 6403228Abstract: The invention relates to the use of (1) a liquid functional organylorganyloxysilane bound to a carrier, or of a liquid (co)condensate derived from a functional organylorganyloxysilane and bound to a carrier for preparing cable compounds which comprise (2) a thermoplastic base polymer having polar functional groups and (3) a reinforcing or extending mineral filler.Type: GrantFiled: June 26, 2000Date of Patent: June 11, 2002Assignee: Degussa AGInventors: Helmut Mack, Ralf Laven, Peter Jenkner, Roland Edelmann, Dieter Barfurth, Albert-Johannes Frings, Burkhard Standke, Jaroslaw Monkiewicz, Michael Horn
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Patent number: 6395858Abstract: The present invention relates to mixtures of catenate and cyclic siloxane oligomers of the formulae I and II where the substituents R consist of (i) aminopropyl-functional groups of the formula —(CH2)3—NH2 or —(CH2)3—NHR′ or —(CH2)3—NH(CH2)2—NH2 or —(CH2)3—NH(CH2)2—NH(CH2)2—NH2,in which R′ is a linear, branched or cyclic alkyl group of 1 to 18 carbon atoms or an aryl group of 6 to 12 carbon atoms, and (ii) methoxy, ethoxy, 2-methoxyethoxy and/or propoxy groups, and (iii) if desired, alkyl, alkenyl, isoalkyl or cycloalkyl groups of 1 to 18 carbon atoms and/or aryl groups of 6 to 12 carbon atoms, and where not more than one aminopropyl-functional group is attached to one silicon atom and the degree of oligomerization of compounds of the formula I is within the range 2<m<30 and that of compounds of the formula II is 3≦n≦30 and the quotient of the molar proportion of Si/alkoxy group is ≧0.5.Type: GrantFiled: October 27, 1999Date of Patent: May 28, 2002Assignee: Degussa AGInventors: Helmut Mack, Dieter Barfurth, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Ralf Laven, Jaroslaw Monkiewicz, Burkhard Standke
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Patent number: 6361871Abstract: A composition comprising at least one organofluorine-functional silane and/or siloxane, at least one mineral acid and at least one metal salt of aluminum(III), tin(II), tin(IV), iron(III) or titanium(III); a process for preparing said composition and to its use; and surface-modified substrates obtainable by coating with said composition.Type: GrantFiled: February 1, 2000Date of Patent: March 26, 2002Assignee: Degussa AGInventors: Peter Jenkner, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Ralf Laven, Helmut Mack, Jaroslaw Monkiewicz, Burkhard Standke
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Patent number: 6323356Abstract: The present invention relates to a process for the preparation of alkoxysilanes in which at least one halogenosilane is reacted with at least one alcohol in the presence of metallic magnesium and the alkoxysilane is isolated from the crude product.Type: GrantFiled: November 13, 2000Date of Patent: November 27, 2001Assignee: Degussa-Huels AktiengesellschaftInventors: Peter Löwenberg, Thomas Schlosser, Michael Horn, Ralf Laven, Jaroslaw Monkiewicz
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Patent number: 6288256Abstract: An aqueous organopolysiloxane-containing composition comprising organopolysiloxanes of formula I: HO [Si(A)(CH3)z(OH)1−zO]a[Si(B)(R2)y(OH)1−yO]b[Si(C)(CH3)O]c[Si(D)(OH)O]dH.Type: GrantFiled: January 12, 1999Date of Patent: September 11, 2001Assignee: Degussa-Huels AktiengesellschaftInventors: Burkhard Standke, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Ralf Laven, Helmut Mack, Jaroslaw Monkiewicz
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Patent number: 6281288Abstract: A reinforced molding material having high tensile strength comprising: (a) from 0 to 98 parts by weight of one or more thermoplastics, (b) from 2 to 100 parts by weight of a substantially amorphous polyolefin which has been subjected to free radical grafting with a silane which has at least one olefinic double bond and one to three alkoxy groups bonded directly to the silicon, this grafted polyolefin having a melt viscosity at 190° C. In the range from 100 to 50,000 maps and the parts by weight of (a) and (b) sunning to 100, and (c) from 0.5 to 400 parts by weight of a reinforcing material. The molding material can be used, inter alia, for shaped articles, as hotmelt adhesives or for heavy-duty carpet backing materials.Type: GrantFiled: March 3, 1999Date of Patent: August 28, 2001Assignee: Degussa-Huels AktiengesellschaftInventors: Peter Bickert, Ralf Laven, Hans Guenther Wey
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Patent number: 6255513Abstract: The present invention relates to a stable composition of water-soluble organosiloxanes obtained by reacting a) a water-soluble amino-functional alkoxysilane with at least one water-insoluble alkenyl-functional alkoxysilane b) by adding water to form a mixture, and c) removing the alcohol formed during step b) from the mixture, where the amino-functional alkoxysilane and the water are used in the reaction at least in amounts such that substantially all of the alkoxy groups of the water-insoluble silane can react and such that when a resulting composition is diluted with water, essentially no alcohol is liberated by hydrolysis, and the composition, during an/or after the reaction, has a pH of from 2 to 6, the pH being preferably adjusted by adding an organic or inorganic, optionally aqueous, acid. In addition, the present invention discloses a process for the preparation of such a composition and also its use.Type: GrantFiled: April 28, 1999Date of Patent: July 3, 2001Assignee: Huels AktiengesellschaftInventors: Burkhard Standke, Jaroslaw Monkiewicz, Albert-Johannes Frings, Ralf Laven, Roland Edelmann, Peter Jenkner, Helmut Mack, Dieter Barfurth, Michael Horn
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Patent number: 6251989Abstract: An oligomerized polyorganosiloxane cocondensate which may be obtained, in part, by mixing an water-soluble amino-functional organosilane represented with at least one of the followoing: a fluoro-functional organosilane, an organosilane, and an organosilane. The cocondensate may be used, for example, in a method of treating surfaces.Type: GrantFiled: May 26, 1999Date of Patent: June 26, 2001Assignee: Degussa-Huels AktiengesellschaftInventors: Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Eckhard Just, Manfred Kaussen, Ralf Laven, Helmut Lohmann, Helmut Mack, Jaroslaw Monkiewicz, Stephan Ramlow, Burkhard Standke, Tilman Taeger
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Patent number: 6239194Abstract: The present invention relates to surface-modified fillers obtained by mixing a filler with water, adding an water-based organosiloxane composition with very thorough mixing, wherein the organosiloxanes are soluble in water and contain, in addition to OH groups, at least one amino-functional group and optionally a functional group from the series consisting of alkyl, haloalkyl, alkenyl, glycidyl ether alkyl, acryloxyalkyl and methacryloxyalkyl, and wherein a functional group is bonded to each silicon atom of the organosiloxane, and drying the mixture. The present invention also provides a process for the surface modification of fillers, their use and ethylene-vinyl acetate copolymer compositions which include the surface-modified fillers.Type: GrantFiled: April 28, 1999Date of Patent: May 29, 2001Assignee: Huels AktiengesellschaftInventors: Burkhard Standke, Jaroslaw Monkiewicz, Albert-Johannes Frings, Ralf Laven, Roland Edelmann, Peter Jenkner, Helmut Mack, Dieter Barfurth, Michael Horn
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Patent number: 6228936Abstract: The present invention provides an aqueous alcoholic fluoroalkyl functional group containing organopolysiloxane composition, which includes organopolysiloxanes of formula I: RO{Si(A)(CH3)z(OR)1−zO}a{Si(B)(R2)y(OR)1−yO}b{Si(C)(CH3)O}c{Si(D)(OR)O}dR.(HX)e (I) wherein A, B, C, D, R, R2, X, z, y, a, b, c, d and e are defined in the claims. The present invention also provides methods for making the fluoroalkyl functional group containing organopolysiloxane composition as well as methods of using same.Type: GrantFiled: January 12, 1999Date of Patent: May 8, 2001Assignee: Huels AktiengesellschaftInventors: Burkhard Standke, Roland Edelmann, Albert-Johannes Frings, Ralf Laven, Michael Horn, Peter Jenkner, Helmut Mack, Jaroslaw Monkiewicz
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Patent number: 6177584Abstract: The present invention relates to a process for neutralizing and reducing the residual halogen content in alkoxysilanes and alkoxysilane-based compositions, which includes treating an alkoxysilane having a residual content of acidic halide, or a corresponding alkoxysilane-based composition, with metallic magnesium in the presence of an alcohol and separating off the resulting solids.Type: GrantFiled: October 26, 1999Date of Patent: January 23, 2001Assignee: Degussa-Huels AktiengesellschaftInventors: Peter Loewenberg, Frank Kropfgans, Ralf Laven, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Helmut Mack, Jaroslaw Monkiewicz, Burkhard Standke
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Patent number: 6133466Abstract: Mixtures of catenate and cyclic siloxane oligomers of formula I and II ##STR1## wherein the substituents R consist of 3-methacryloxypropyl or 3-acryloxypropyl groups and methoxy, ethoxy and/or propoxy groups alone or together with C.sub.1 -C.sub.18 alkyl, fluoroalkyl, isoalkyl or cycloalkyl groups and/or C.sub.6 -C.sub.12 aryl groups and where not more than one 3-methacryloxypropyl or 3-acryloxypropyl group is attached to one silicon atom and the degree of oligomerization of compounds of the formula I is within the range 2<m<25 and of compounds of the formula II is within the range 2<n<8 and the quotient of the molar proportion of Si/alkoxy groups is .gtoreq.0.5.Type: GrantFiled: August 2, 1999Date of Patent: October 17, 2000Assignee: Degussa-Huels AktiengesellschaftInventors: Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Ralf Laven, Helmut Mack, Jaroslaw Monkiewicz, Wolfgang-Wilhelm Orlia, Burkhard Standke
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Patent number: 6100418Abstract: The residual halogen content in alkoxysilanes and in alkoxysilane-based compositions is reduced by a process comprising, treating the alkoxysilane or the alkoxysilane-based composition with activated carbon.Type: GrantFiled: May 12, 1999Date of Patent: August 8, 2000Assignee: Sivento Chemie Rheinfelden GmbHInventors: Burkhard Standke, Jaroslaw Monkiewicz, Albert-Johannes Frings, Ralf Laven, Roland Edelmann, Peter Jenkner, Helmut Mack, Michael Horn
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Patent number: 6054601Abstract: Organopolysiloxane containing compositions are prepared by mixing an organopolysiloxane containing an aminoalkyl group, an organopolysiloxane containing a fluoroalkyl group, and optionally, organopolysiloxanes containing alkyl groups, together with water, or a water/acid mixture, or a water/acid/alcohol mixture, where the mixture is adjusted to have a pH in the range of 1-8, then removing the alcohol already present or formed during reaction.Type: GrantFiled: June 9, 1998Date of Patent: April 25, 2000Assignee: Huels AktiengesellschaftInventors: Burkhard Standke, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Ralf Laven, Helmut Mack, Jaroslaw Monkiewicz
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Patent number: 5932757Abstract: A mixture of oligomers of alkylalkoxysilanes condensed in the chain and/or cyclic form, said mixture of oligomers containing less than 2% by weight of free alcohols and the condensed alkoxysilanes satisfying formula I: ##STR1## wherein R is an alkyl group having 3 to 18 carbon atoms, and each R' is a member (i) selected from the group consisting of methyl, ethyl or hydrogen, or is (ii) methyl or hydrogen, or is (iii) ethyl or hydrogen, the degree of oligomerization being in the range 2.ltoreq.x.ltoreq.20 and the quotient of the molar ratio ?Si/alkoxy group!.gtoreq.1; and/orsatisfying formula II: ##STR2## in which R is an alkyl group having 3 to 18 carbon atoms, and each R' is a member (i) selected from the group consisting of methyl, ethyl or hydrogen, or is (ii) methyl or hydrogen or is (iii) ethyl or hydrogen, the degree of oligomerization being x.gtoreq.3 and the quotient of the molar ratio ?Si/alkoxy group!.gtoreq.1.Type: GrantFiled: June 17, 1997Date of Patent: August 3, 1999Assignee: Huls AktiengesellschaftInventors: Burkhard Standke, Roland Edelmann, Albert Frings, Michael Horn, Peter Jenkner, Ralf Laven, Jaroslaw Monkiewicz, Lothar Elfenthal, Hans-Hermann Luginsland
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Patent number: 5885341Abstract: Organopolysiloxane-containing, water-based compositions which are essentially free from organic solvents, have a flash point of above 70.degree. C. and liberate essentially no alcohols through hydrolysis on dilution with water, and which contain, as functional groups, glycidyl ether alkyl, acryloxyalkyl and/or methacryloxyalkyl groups, where each silicon in the organopolysiloxane carries one functional group, as well to a process for the preparation of such organopolysiloxane-containing compositions and to their use.Type: GrantFiled: September 11, 1997Date of Patent: March 23, 1999Assignee: Huels AktiengesellschaftInventors: Burkhard Standke, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Ralf Laven, Helmut Mack, Jaroslaw Monkiewicz
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Patent number: 5863509Abstract: An aqueous alcoholic fluoroalkyl functional group containing organopolysiloxane-composition, comprising:organopolysiloxanes of formula I:RO?Si(A)(CH.sub.3).sub.z (OR).sub.1-z O!.sub.a ?Si(B)(R.sup.2).sub.y (OR).sub.1-y O!.sub.b ?Si(C)(CH.sub.3)O!.sub.c ?Si(D)(OR)O!.sub.d R.multidot.(HX) (I)wherein A is an aminoalkyl radical derived from the compound of formula II:H.sub.2 N(CH.sub.2).sub.f (NH).sub.g (CH.sub.2).sub.h Si(OR).sub.3-z (CH.sub.3).sub.z (II)wherein 0.ltoreq.f.ltoreq.6, 9=0 if f=0 and g=1 if f>0, 0.ltoreq.h.ltoreq.6 and 0.ltoreq.z.ltoreq.1, and B is a fluoroalkyl radical derived from the compound of formula III:R.sup.1 --Y--(CH.sub.2).sub.2 Si(R.sup.2).sub.y (OR).sub.3-y (III)wherein R.sup.1 is a mono-, oligo- or perfluorinated alkyl group having 1-9 C atoms or a mono-, oligo- or perfluorinated aryl group, Y is a CH.sub.2, O or S group, R.sub.2 is a linear, branched or cyclic alkyl group having 1-8 C atoms or an aryl group and 0.ltoreq.y.ltoreq.Type: GrantFiled: June 10, 1998Date of Patent: January 26, 1999Assignee: Huels AktiengesellschaftInventors: Burkhard Standke, Roland Edelmann, Albert-Johannes Frings, Ralf Laven, Michael Horn, Peter Jenkner, Helmut Mack, Jaroslaw Monkiewicz