Patents Assigned to Röhm GmbH & Co. KG
  • Publication number: 20110230610
    Abstract: The invention relates to a polymer mixture, comprising a) a polymer matrix which is composed of a (meth)acrylate (co)polymer or of a mixture of (meth)acrylate (co)polymers with a Vicat softening point VSP (ISO 306-B50) of at least 104° C. and/or of a (meth)acrylimide (co)polymer, b) an impact modifier which is based on crosslinked poly(meth)acrylates and which does not have covalent bonding to the polymer matrix a), c) from 1 to 15% by weight of plastics particles composed of crosslinked polymers based on polymethyl methacrylate, on polystyrene and/or on polysilicones. The polymer mixture can be used to obtain injection mouldings with matt surfaces and Vicat softening points VSPs (ISO 306-B50) of at least 90° C.
    Type: Application
    Filed: May 25, 2011
    Publication date: September 22, 2011
    Applicant: ROEHM GMBH & CO. KG
    Inventors: Klaus Schultes, Michael Wicker, Peter Kempf, Werner Hoß, Klaus Albrecht, Ursula Golchert, Stefan Nau
  • Patent number: 7695813
    Abstract: The present invention relates to a core-shell particle which has a core, a first shell and, where appropriate, a second shell, where: i) the core encompasses, based on its total weight, at least 75.0% by weight of (meth)acrylate repeat units; ii) the first shell has a glass transition temperature below 30° C.; iii) the second shell present where appropriate encompassed, based on its total weight, at lest 75.0% by weight of (meth)acrylate repeat units; iv) the first shell encompasses, based on its total weight, the following constituents; E) from 92.0 to 98.0% by weight of (meth)acrylate repeat units and F) from 2.0 to 8.0% by weight of styrenic repeat units of the general formula (I) ?where the radicals R1 to R6 are defined according to the Description and the percentages by weight of E) and F) give a total of 100.0% by weight, v) the radius of the core-shell particle inclusive of any second shell present, measured by the Coulter method, is in the range from above 160.0 to 240.
    Type: Grant
    Filed: October 18, 2003
    Date of Patent: April 13, 2010
    Assignee: Roehm GmbH & Co. KG
    Inventors: Klaus Schultes, Reiner Mueller, Andreas Spiess, Klaus Albrecht, Werner Hoess
  • Patent number: 7683131
    Abstract: The invention relates to a moulding composition, comprising a) 50 to 99.9% by weight of a matrix composed of a thermoplastic polymer and b) from 0.1 to 50% by weight of a matting agent in the form of a (meth)acrylate copolymer dispersed in the matrix, characterized in that the matting agent is a (meth)acrylate copolymer which has been prepared from the following monomers, b1) from 50 to 95% by weight of methyl methacrylate b2) from 5 to 50% by weight of C1-C6-alkyl acrylates b3) from 0.01 to less than 0.5% by weight of a crosslinking monomer and/or graft-linking agent having two or more ethylenically unsaturated radicals capable of free-radical polymerization, b4) from 0 to 20% by weight of one or more other, non-crosslinking ethylenically unsaturated monomers capable of free-radical polymerization, where the entirety of the constituents b1) and b2) and, where appropriate, b3) and/or b4) gives 100% by weight, and the glass transition temperature Tmg of the matting agent is at least 20° C.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: March 23, 2010
    Assignee: Röhm GmbH & Co. KG
    Inventors: Thorsten Goldacker, Andreas Spiess, Reiner Mueller, Klaus Schultes, Uwe Numrich
  • Patent number: 7665574
    Abstract: Soundproofing, restraining systems including at least one transparent acrylic glass panel that contains at least one embedded metal cable. A layer of plastic is provided, at least partially, between the surface of the metal cable and the transparent acrylic glass matrix. The restraining systems can be used in particular as noise barriers.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: February 23, 2010
    Assignee: Roehm GmbH & Co. KG
    Inventors: Egbert Schoela, Peter Seelmann, Ingulf Stuelpnagel, Johannes Kistenich, Ryoichi Tanaka, Motoji Tashiro
  • Patent number: 7652075
    Abstract: The present invention relates to a process for producing ROHACELL® foams with a compacted surface. Markedly less adhesive then has to be applied during lamination and the good mechanical properties of the ROHACELL® foams are retained. The invention further permits the use of ROHACELL® foams as a removable core.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: January 26, 2010
    Assignee: Röhm GmbH & Co. KG
    Inventors: Uwe Lang, Roland Geduldig
  • Patent number: 7638094
    Abstract: The invention relates to a process for the continuous free-radical homogeneous solution polymerization or melt polymerization of (meth)acrylate monomer mixtures.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: December 29, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Hans-Dieter Blitz, Norbert Suetterlin
  • Patent number: 7605193
    Abstract: The invention describes a novel impact modifier, built up from core-shell1- and shell 2, the core being capable of plastic deformation. Good mechanical properties were achieved using a small amount of impact modifier.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: October 20, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Klaus Schultes, Thomas Suefke, Reiner Mueller, Thomas Arndt, Goerg Michler, Joachim Laatsch
  • Patent number: 7602550
    Abstract: The present invention relates to rear-projection screens which have at least one scattering layer encompassing scattering particles and has at least one backing layer, characterized in that the halved-intensity angle of the scattering layer is greater than or equal to 15° and the halved-intensity angle of the backing layer is smaller than or equal to 6.5°, where the gloss R60° of the backing layer is smaller than or equal to 70.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: October 13, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Markus Parusel, Jann Schmidt, Herbert Groothues
  • Patent number: 7586004
    Abstract: The invention relates to a process for continuously preparing alkylamino(meth)acrylamide by reacting methyl (meth)acrylate, ethyl (meth)acrylate or amines having a high boiling point compared to methanol or ethanol. A special workup technique which includes removing water from the amine before entering the reactor allows product qualities which have hitherto not been attained to be achieved. In addition, very high space-time and overall yields can be achieved.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: September 8, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Volker Schleep, Thomas Mertz
  • Patent number: 7568553
    Abstract: A noise barrier system composed of a base and a transparent superstructure. A support holds at least two adjacent transparent noise barrier elements and includes a point-fastening of the transparent noise barrier element. A position of upper holding points of the transparent superstructure is arranged at a height of from 70 to 90% of a total height of the transparent noise barrier element and at a distance of from 3 to 50 times a thickness of the transparent noise barrier element from a vertical edge. An upper side of the transparent noise barrier element has a flexure, an angle of the flexure being from 30° to 90° from vertical, and a width of an angled region being from 5 cm to 50 cm, and an entire length of a lower side of the sheet is secured within a groove-shaped depression.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: August 4, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Wolffgang Wiebel, Klaus Lublow, Klaus Oberlaender, Norbert Brand, Reiner Lingelbach, Peter Seelmann
  • Patent number: 7568682
    Abstract: The invention describes a point-type, spring-supported suspension means for noise protection sheets.
    Type: Grant
    Filed: January 22, 2005
    Date of Patent: August 4, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Peter Seelmann, Martin Petschnig
  • Publication number: 20090191335
    Abstract: A method for continuously coating the inside of a continuously extruded hollow profiled bar made of elastic material and a liquid wiper and a device for removing excess coating agent from the chambers of a hollow profiled member. A hollow profiled bar is directed through a stationary supply of a liquid coating agent on a bent, arc-shaped track, whereby inner walls of the hollow profiled bar are moistened with coating agent, and the hollow profiled bar is guided along a rising track directly after running through the coating agent supply. Excess coating agent is wiped off one or plural inner walls with the aid of liquid wipers mounted inside the hollow chambers, the hollow profiled bar being continuously moved relative to the liquid wipers. The liquid wipers include at least one magnet or magnetizable material and a wiping lip that touches the inner walls while being located downstream of the coating agent supply in a zone of a sloped track of the hollow profiled bar.
    Type: Application
    Filed: December 24, 2004
    Publication date: July 30, 2009
    Applicant: ROEHM GMBH & CO. KG
    Inventors: Dieter Foerster, Juergen Krautter, Manfred Schneider
  • Patent number: 7553918
    Abstract: The invention relates to a pH-sensitive polymer which is a (meth)acrylate copolymer composed of 20 to 65% by weight acrylic and/or methacrylic acid units and 80 to 35% by weight units of C1- to C18-alkyl esters of (meth)acrylic acid, characterized in that it has a molecular weight in the range from 1 000 to 50 000 g/mol, and brings about at least 60% haemolysis at pH 5.5, and less than 5% haemolysis at pH 7.4, in a concentration of 150 ?g/ml in a cytotoxicity test with human red blood cells. The invention further relates to the use of the pH-sensitive polymer as carrier for pharmaceutically effective biomolecules or active pharmaceutical ingredients and as ingredient of corresponding dosage forms.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: June 30, 2009
    Assignees: Roehm GmbH & Co. KG, Universite de Montreal
    Inventors: Hans-Ulrich Petereit, Christian Meier, Klaus Schultes, Marie-Andree Yessine, Jean-Christophe Leroux
  • Patent number: 7521035
    Abstract: A method for the regeneration of residues containing sulphur is characterized in that a droplet stream containing fuel is introduced into the reactor simultaneously with the droplet stream containing the residue and is fed into a pre-reaction zone that is created by feeding in an oxygen-rich gas stream, whereby the residue in the pre-reaction zone is partially thermally cleaved and subsequently fed into the reaction zone.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: April 21, 2009
    Assignees: Messer Griesheim GmbH, Roehm GmbH & Co. KG
    Inventors: Gerhard Grob, Heinz Gruning
  • Patent number: 7498373
    Abstract: The invention relates to a hot sealing system comprised of an olefin polymer or of an olefin polymer A, of a methacrylate polymer B, of a graft polymer A-X consisting of the above-mentioned constituents and of a solvent or solvent mixture. The hot sealing system is characterized by having a high thermal stability and short sealing times.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: March 3, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Guenter Schmitt, Michael Wicke, Juergen Hartmann, Klaus Schultes, Helmut Schwind, Thomas Arnold
  • Patent number: 7497972
    Abstract: The invention relates to a moulding composed of a plastics matrix composed of a transparent plastic, comprising a soluble fluorescent dye and a scattering agent whose refractive-index difference from the plastics matrix is +/? from 0.003 to 0.2, characterized in that a white pigment whose refractive-index difference from the plastics matrix is from +0.4 to 1.5 is also present, at a concentration of from 0.001 to 0.1% by weight.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: March 3, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Hans Lichtenstein, Guenther Ittmann, Eduard Albrecht
  • Patent number: 7498044
    Abstract: The invention relates to a process for producing a coated drug form or a drug form in the form of an active ingredient matrix, by processing a copolymer, an active pharmaceutical ingredient, a core if present and/or pharmaceutically customary excipients in a conventional manner by melting, injection molding, extrusion, wet granulation, casting, dipping, spreading, spraying or compression to form a coated drug form and/or to form an active ingredient matrix, characterized in that a copolymer is used which is composed of 20 to 33% by weight methacrylic acid, 5 to 30% by weight methyl acrylate, 20 to 40% by weight ethyl acrylate and more than 10 to 30% by weight butyl methacrylate and, if desired, 0 to 10% by weight further vinylically copolymerizable monomers, with the proviso that the glass transition temperature of the copolymer in accordance with ISO 11357-2, section 3.3.3, is 55 to 70° C.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 3, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Hans-Ulrich Petereit, Christian Meier, Klaus Schultes
  • Patent number: 7494690
    Abstract: The invention relates to a method for producing pharmaceuticals or parts thereof or food supplements or parts thereof, by coating substrates with a film-forming coating agent containing a pigment which is incompatible with the coating agent. The invention also relates to appliances for carrying out said method, especially a drum coater, a mushroom mixer, a fluidised bed appliance or a spray sifter comprising multiple spray devices.
    Type: Grant
    Filed: October 18, 2003
    Date of Patent: February 24, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Hans-Ulrich Petereit, Christian Meier, Erna Roth
  • Patent number: 7473737
    Abstract: The present invention relates to mixtures for preparing transparent plastics, encompassing a) compounds of the formula (I) and (II) where each R1, independently of the others, is hydrogen or a methyl radical, each R2, independently of the others, is a linear or branched, aliphatic or cycloaliphatic radical, or a substituted or unsubstituted aromatic or heteroaromatic radical, and each of m and n, independently of the other, is a whole number greater than or equal to 0, where m+n>0, and b) at least one monomer (A) capable of free-radical polymerization with a molar mass of at least 150 g/mol, which contains at least two terminal olefinic groups, where at least two of the olefinic groups of the monomer (A) have, in the ?- and/or ?-position with respect to the olefinic group, atoms which differ in nature and/or number, in the radical which connects the at least two olefinic groups.
    Type: Grant
    Filed: July 10, 2004
    Date of Patent: January 6, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Bardo Schmitt, Patrik Hartmann
  • Publication number: 20080305335
    Abstract: The invention relates to core-shell structured silicone rubber graft polymers that comprise a core a) from a silicium-organic polymer that corresponds to the general formula (R2SiO2/2)x.(RSiO3/2)y.(SiO4/2)z, wherein x=0 to 99.5 mole %, y=0.5 to 100 mole %, z=0 to 50 mole %, wherein R is the same or different and represents alkyl or alkenyl groups having 1 to 6 C atoms, aryl groups or substituted hydrocarbon groups and at last one shell c) from an organic polymer. The silicone rubber graft copolymers are obtained by producing the organic shell c) by radical polymerization at a temperature of not more than 65° C. and adding the initiator in at least two portions to the reaction vessel, with a further addition at least 2 minutes after start of the polymerization.
    Type: Application
    Filed: January 7, 2008
    Publication date: December 11, 2008
    Applicant: ROEHM GmBH & CO. KG
    Inventors: Klaus SCHULTES, Reiner Mueller, Werner Hoess, Klaus Albrecht