Patents Assigned to DLW Aktiengesellschaft
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Patent number: 7482396Abstract: The present invention relates to a method for producing a flat article comprising a material that contains the products of several reactions. The method comprises the following steps: carrying out a pre-cross-linking of a mixture comprising an epoxydation product of a carboxylic acid ester using at least one cross-linking agent in order to form a mouldable material; moulding the mouldable material in the shape of a flat article; and curing the moulded material in order to produce a flat article, wherein the pre-cross-linking reaction is separate from the curing reaction. This invention also relates to a mouldable material that can be stored and to a flat article that can be obtained from the same.Type: GrantFiled: November 15, 2004Date of Patent: January 27, 2009Assignee: DLW AktiengesellschaftInventors: Bernd Fischer, Heiko Hamann, Hans-Jörg Mauk, Miko Ess, Bernd Kastl
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Patent number: 7306843Abstract: A linoleum-based planar structure, a process for the preparation of such a planar structure as well as the use of the planar structure, for example, as a floor covering is provided. The linoleum-based planar structure contains flakes, including organic polymeric material, over the whole cross section of the linoleum sheet. The flakes are compatible with the linoleum base composition and have a particle size in the range of 0.5 mm to 30 mm and a thickness in the range of 1.0 ?m to 400 ?m. Such a planar structure displays a smooth plain surface without the need of any grinding step. Moreover, the incorporation of such flakes enables a broad variety of designing and patterning, particularly the development of a distinctively, coarsely patterned “spotting structure.Type: GrantFiled: July 27, 2001Date of Patent: December 11, 2007Assignee: DLW Aktiengesellschaft, Inc.Inventors: Karl-Heinz Schwonke, Marco Dowidat-Eskes, Ole Markmann, Milko Ess
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Patent number: 7297366Abstract: The present invention relates to a process for producing a novel patterned flexible linoleum sheet material.Type: GrantFiled: April 10, 2000Date of Patent: November 20, 2007Assignee: DLW Aktiengesellschaft, Inc.Inventors: Ole Markmann, Bernd Schulte
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Patent number: 7238416Abstract: Disclosed is a linoleum-based floor covering with improved flame-retardant properties, whose useful layer contains at least one flame retardant from the group of expandable graphites. Additionally disclosed is a method for producing linoleum-based floor-coverings with structures for creating colored patterns and to a cork-based floor covering with improved flame-retardant properties.Type: GrantFiled: April 10, 2002Date of Patent: July 3, 2007Assignee: DLW AktiengesellschaftInventors: Hanns-Jörg Mauk, Milko Ess, Karl-Heinz Schwonke
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Patent number: 7019087Abstract: A method for the production of moldable masses is provided. The method includes compounding a polyolefin having a density of less than about 0.918 g/cm3 serial cross-linking agents. The moldable masses can be used the production of low-emission floor coverings with excellent material properties.Type: GrantFiled: August 12, 2002Date of Patent: March 28, 2006Assignee: DLW AktiengesellschaftInventors: Hanns-Jörg Mauk, Bernd Fischer, Renate Stefani
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Patent number: 6946541Abstract: The present invention relates to a composition based on renewable raw materials which is particularly characterized by containing at least one tin-containing compound, an article made thereof as well as a process for the preparation of such an article. The composition according to the present invention exhibits an increased curing rate, i.e. a shortened “incubation time”, compared to those compositions based on renewable raw materials currently available in the prior art. Furthermore, the composition according to the present invention can advantageously use particularly in casting and rotational casting processes, respectively.Type: GrantFiled: May 21, 2001Date of Patent: September 20, 2005Assignee: DLW AktiengesellschaftInventors: Milko Ess, Bernd Kastl, Siegfried Reichert, Hanns-Jörg Mauk
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Patent number: 6831023Abstract: The invention relates to an electrically conductive floor covering based on linoleum, comprising a wear layer and a sub-layer, whereby the floor covering has an electrical volume resistivity R1 according to EN 1081, of a maximum 107 &OHgr;. The invention also relates to a method for producing said floor covering.Type: GrantFiled: June 4, 2002Date of Patent: December 14, 2004Assignee: DLW AktiengesellschaftInventors: Uta Szerreiks, Markus Baum
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Patent number: 6822055Abstract: The present invention relates to a method for producing a flat article comprising a material that contains the products of several reactions. The method comprises the following steps: carrying out a pre-cross-linking of a mixture comprising an epoxydation product of a carboxylic acid ester using at least one cross-linking agent in order to form a moldable material; molding the moldable material in the shape of a flat article; and curing the molded material in order to produce a flat article, wherein the pre-cross-linking reaction is separate from the curing reaction. This invention also relates to a moldable material that can be stored and to a flat article that can be obtained from the same.Type: GrantFiled: April 18, 2002Date of Patent: November 23, 2004Assignee: DLW AktiengesellschaftInventors: Bernd Fischer, Heiko Hamann, Hans-Jörg Mauk, Miko Ess, Bernd Kastl
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Patent number: 6680394Abstract: The invention relates to a continuous method for producing a cross-linked unsaturated fatty acid-based or fatty acid ester-based bonding agent, an elastic bonding agent produced according to said method and the use of said elastic bonding agent.Type: GrantFiled: November 15, 2001Date of Patent: January 20, 2004Assignee: DLW AktiengesellschaftInventors: Karen Brumm, Thomas Lage, Hanns-Jörg Mauk, Bernd Schulte, Karl-Heinz Schwonke
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Patent number: 6462123Abstract: Electrically conductive linoleum-based floor covering with a content of an additive enhancing the conductive and antistatic properties of the floor covering, whereby the floor covering comprises as an additive at least one cationic compound with a quatemary nitrogen atom, particularly a derivative of imidazole, imidazoline or morpholine, whereby the covering also contains silica, particularly kieselguhr, in addition to the common processing aids and additives.Type: GrantFiled: May 8, 2000Date of Patent: October 8, 2002Assignee: DLW AktiengesellschaftInventors: Guido Burmeister, Karen Brumm
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Patent number: 6440543Abstract: A floorcovering tile is provided which has an upper and a lower layer and a carrier arranged between these, where at least one of the two layers is a service layer. The floorcovering tile retains its flatness even when temperature and/or humidity varies. A process for producing the floorcovering tile is also described.Type: GrantFiled: January 4, 1999Date of Patent: August 27, 2002Assignee: DLW AktiengesellschaftInventor: Hans-Dieter Vieluf
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Patent number: 6248405Abstract: The present invention relates to materials containing polyreaction products cured by UV radiation in presence of at least one UV initiator and/or electron radiation and/or IR radiation, planar structures based on renewable raw materials which contain these materials particularly in the coating layer, and methods of the production of said planar structures.Type: GrantFiled: September 7, 1999Date of Patent: June 19, 2001Assignee: DLW AktiengesellschaftInventors: Bernd Kastl, Milko Ess, Bernhard Jung
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Patent number: 6224804Abstract: The present invention relates to a floor covering that causes essentially no unpleasant odors and/or health damaging emissions and which furthermore shows no signs of discoloration by aging for a lengthy time period, as well as a method for manufacturing the floor covering.Type: GrantFiled: December 8, 1998Date of Patent: May 1, 2001Assignee: DLW AktiengesellschaftInventors: Karl-Heinz Schwonke, Tilman Griesinger, Bernd Fischer, Heinz Von Olnhausen
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Patent number: 6150436Abstract: This invention relates to materials containing polyreaction products, which contain reaction products of dicarboxylic acids or polycarboxylic acids or derivatives thereof with epoxidation products of carboxylic acid esters and at least one filler, methods for the production thereof, and the use thereof for the production of planar structures based on renewable raw materials.Type: GrantFiled: June 24, 1999Date of Patent: November 21, 2000Assignee: DLW AktiengesellschaftInventors: Bernd Kastl, Milko Ess, Hanns-Jorg Mauk
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Patent number: 5932337Abstract: The invention discloses a planar structure composed of at least one carrier layer (I) and at least one transparent cover coat (II); an optional back coat (III) arranged under the carrier coat (I) and made of a chemically or mechanically foamed expanded layer; and an optional compact or priming coat (IV) arranged between carrier layer (I) and cover coat (II) and/or between carrier layer (I) and back coat (III), wherein the coating compounds for the layers (II), (III), (IV) can be manufactured from a combination of:a) epoxidized products of esters of unsaturated fatty acids having a chain length of C.sub.8 to C.sub.Type: GrantFiled: May 14, 1997Date of Patent: August 3, 1999Assignee: DLW AktiengesellschaftInventors: Sabine Edinger, Ditmar Schulz, Susanne Baumgartner, Bernd Kastl, Frank Mauer