Abstract: Optical elements, in particular for holographic applications, have a gradient structure formed by a refractive index gradient and include one or more organic polymers and at least one ionic liquid.
Type:
Grant
Filed:
February 11, 2009
Date of Patent:
March 5, 2013
Assignee:
Leibniz-Institut fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Peter William de Oliveira, Michael Veith, Peter Rogin, Hechun Lin, Marcus Geerkens
Abstract: A method for producing nanoscale particles by means of ionic liquids produces highly crystalline particles. The ionic liquids can be easily regenerated.
Type:
Application
Filed:
December 15, 2010
Publication date:
November 1, 2012
Applicant:
Leibniz-Institut fuer Neue Materialien gemeinnuetzige GmbH
Inventors:
Peter William de Oliveira, Hechun Lin, Michael Veith
Abstract: A consolidation agent for molded articles and geological formations from porous or particulate materials, containing a hydrolysate or precondensate of (a) at least one organosilane of the general formula (I) RnSiX4-n??(I) in which the radicals R are identical or different and are not hydrolytically removable groups, the radicals X are identical or different and are hydrolytically removable groups or hydroxyl groups, and n is 1, 2 or 3, and optionally (b) at least one hydrolyzable silane of the general formula (II) SiX4??(II) in which the radicals X have the meaning defined above.
Type:
Grant
Filed:
January 28, 2005
Date of Patent:
April 24, 2012
Assignee:
Leibniz-Institut fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Klaus Endres, Helmut Schmidt, Bernd Reinhard
Abstract: Described is a consolidant comprising a hydrolyzate or precondensate of at least one organosilane and at least one metal compound, where the molar ratio of silicon compounds to metal compounds is in the range of from 10 000:1 to 10:1. The consolidant can be used for the hydrolysis-stable consolidation of porous or particulate materials to form moldings. The consolidant can be used for the hydrolysis-stable coating of substrates.
Type:
Grant
Filed:
January 19, 2006
Date of Patent:
March 13, 2012
Assignee:
Leibniz-Institut fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Klaus Endres, Bernd Reinhard, Helmut Schmidt
Abstract: A process for producing a crystalline substrate with an optical multi-layer system thereon and the crystalline substrate obtainable thereby. The process comprises the successive application of at least two free-flowing compositions which comprise nanoscale inorganic solid particles comprising at least one of a polymerizable and a polycondensable organic group to a surface of the crystalline substrate and the polymerization and/or polycondensation of the organic groups of the solid particles to form organically crosslinked layers on the substrate and a single-stage thermal consolidation of these layers with a burnout of organic constituents thereof. The at least two compositions give rise to layers with different refractive indices.
Type:
Grant
Filed:
March 16, 2005
Date of Patent:
March 13, 2012
Assignee:
Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Mohammad Jilavi, Martin Mennig, Peter William Oliveira, Helmut Schmidt
Abstract: A composition with non-Newtonian behaviour which comprises a matrix former and nanoscale solid particles whose surface charge has been increased by reaction with an acid or base, and a process for the preparation thereof. The process is suitable for adjusting the rheology of materials.
Type:
Grant
Filed:
November 9, 2005
Date of Patent:
February 21, 2012
Assignee:
Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Martin Mennig, Peter W. Oliveira, Helmut Schmidt
Abstract: A composition for producing optical elements has a gradient structure, particularly for holographic applications, wherein the gradient structure is formed by a refractivity gradient. The composition is produced from a polymer and a light- and/or temperature-sensitive metal complex and the light- and/or temperature-sensitive metal complex is decomposed upon changing the local refractivity. The result is the formation of a refractivity gradient.
Type:
Application
Filed:
October 16, 2009
Publication date:
September 29, 2011
Applicant:
Leibniz-Institut fuer Neue Materialien gemeinnuetzige GmbH
Inventors:
Peter William De Oliveira, Peter Koenig, Michael Veith, Omid Yazdani-Assl
Abstract: A cationically polymerizable composite coating composition comprising: a) a condensation product of at least one hydrolyzable silane having a fluorine-containing group, b) at least one cationically polymerizable organic resin, and c) a cationic initiator, provides, upon curing, substrates with an alkali-resistant, liquid-repellent coating. The composite coating composition may be used in pattern forming methods.
Abstract: The invention relates to amphiphilic, nanoscalar particles comprising lipophilic hydrolyzable groups on their surface. The invention also relates to methods for producing amphiphilic, nanoscalar particles and to compositions containing said particles.
Type:
Grant
Filed:
February 25, 2005
Date of Patent:
March 8, 2011
Assignee:
Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Ertugrul Arpac, Helmut Schmidt, Murat Akarsu
Abstract: A substrate having an anti-adhesive coating thereon. The coating is made from a coating composition comprising solid particles of a release agent different from boron nitride and a binder comprising surface-modified nanoscale solid particles.
Type:
Grant
Filed:
December 5, 2005
Date of Patent:
December 28, 2010
Assignee:
Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Mesut Aslan, Robert Drumm, Klaus Endres, Hareesh Nair, Bernd Reinhard, Helmut Schmidt
Abstract: Substrates with a biofilm-inhibiting coating comprising an inorganic condensate modified with organic groups, at least some of the organic groups of the condensate containing fluorine atoms and the coating comprising copper colloids or silver colloids.
Type:
Grant
Filed:
October 21, 2004
Date of Patent:
September 21, 2010
Assignee:
Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Carsten Becker-Willinger, Helmut Schmidt
Abstract: A regeneratable plate having a structured surface comprising hydrophilic and hydrophobic regions. The plate comprises a substrate, a first layer comprising a hydrophilic oxidation catalyst arranged on the substrate, and a second layer which is hydrophobic and is imagewise arranged on the first layer to thereby afford the structured surface comprising hydrophobic regions and hydrophilic regions. A process for making the plate by imagewise exposure is also described.
Type:
Application
Filed:
May 24, 2006
Publication date:
February 5, 2009
Applicant:
LEIBNIZ-INSTITUT FUER NEUE MATERIALIEN GEMEINNUETZIGE GMBH
Inventors:
Martin Mennig, Peter Oliveira, Helmut Schmidt
Abstract: A process for the production of a suspension of crystalline and/or densified, surface-modified nanoscale particles in a dispersant. The process comprises: (a) heat-treating a suspension of amorphous or semicrystalline, non-surface-modified nanoscale particles in a first dispersant to obtain crystallized and/or densified particles; and (b) mechanically activating, in the presence of at least one modifying agent, the particles obtained according to (a) as a suspension in the first dispersant or in a different dispersant to obtain a suspension of crystalline and/or densified nanoscale particles which are surface-modified by the at least one modifying agent.
Type:
Application
Filed:
October 3, 2005
Publication date:
January 1, 2009
Applicant:
Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GMBH
Inventors:
Helmut Schmidt, Karl-Peter Schmitt, Klaus Schmitt, Frank Tabellion
Abstract: Substrates comprising a photocatalytic layer containing TiO2 are produced using TiO2 particles which may optionally be doped with metallic or non-metallic elements or compounds. The photocatalytic layer exhibits a concentration gradient of the TiO2 particles. An organically modified inorganic hybrid layer may be provided between the substrate and the photocatalytic layer.
Type:
Grant
Filed:
January 7, 2005
Date of Patent:
November 11, 2008
Assignee:
Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Murat Akarsu, Ertugrul Arpac, Helmut Schmidt
Abstract: Disclosed is a substrate with an abrasion resistant and scratch-resistant coating that has a low index of refraction and comprises magnesium fluoride and at least one metal oxide or semimetal oxide. The coating can be obtained by applying a coating composition containing magnesium fluoride or a precursor thereof and at least one metal oxide or semimetal oxide, or a precursor thereof onto a substrate and then subjecting the same to a thermal treatment. The inventive coating is suitable for optical layers, particularly on translucent substrates. Examples of adequate uses include antireflection layers and interference layer assemblies.
Type:
Application
Filed:
June 7, 2005
Publication date:
October 23, 2008
Applicant:
Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Heike Arndt, Mohammad Jilavi, Martin Mennig, Peter William Oliveira, Helmut Schmidt
Abstract: A process for producing an optical element having a gradient structure, wherein a potential difference is generated in a nanocomposite material comprising nanoscale particles in a matrix material to cause a directed diffusion of the nanoscale particles in the matrix material and a concentration gradient of the nanoscale particles in the matrix material.
Type:
Grant
Filed:
July 8, 2004
Date of Patent:
June 24, 2008
Assignee:
Leibniz-Institut fuer Neue Materialien Gemeinnuetzige GmbH
Inventors:
Ulrike Dellwo, Martin Mennig, Peter W. Oliveira, Helmut Schmidt, Heike Schneider
Abstract: The invention relates to amphiphilic, nanoscalar particles comprising lipophilic hydrolyzable groups on their surface. The invention also relates to methods for producing amphiphilic, nanoscalar particles and to compositions containing said particles.
Type:
Application
Filed:
February 25, 2005
Publication date:
June 12, 2008
Applicant:
LEIBNIZ-INSTITUT FÜR NEUE MATERIALIEN GEMEINNÜTZIGE GMBH
Inventors:
Ertugrul Arpac, Helmut Schmidt, Murat Akarsu
Abstract: A joining or sealing element made of a glass-infiltrated ceramic or metal composite is described. The joining or sealing element serves for joining or sealing at least one component. Furthermore, a method for joining or sealing at least one component with the joining or sealing element and the use of the joining or sealing elements are described.
Type:
Application
Filed:
April 29, 2005
Publication date:
February 14, 2008
Applicant:
Liebniz-Institut Fuer Neue Materialien Gemeinnuetzige GMBH