Patents by Inventor Manfred Munzer

Manfred Munzer 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).

  • Patent number: 5061558
    Abstract: Multilayered plastic objects are prepared having a core layer of an aromatic polycarbonate in contact with a polymethacrylate film containing a UV absorber. The polymethacrylate film comprises a copolymer of methylmethacrylate and an acrylic or methacrylic ester, (meth)acrylamide, maleimide or mixtures thereof and is compatible with said aromatic polycarbonate at all mixing ratios.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: October 29, 1991
    Assignee: Rohm GmbH Chemische Fabrik
    Inventors: Jens-Dieter Fischer, Manfred Munzer, Ursula Golchert, Felix Schinzel
  • Patent number: 4997883
    Abstract: An impact resistance modifier for polycarbonate, which is a copolymer, comprising an elastomer and a methyl methacrylate copolymer, which are bonded covalently. The methyl methacrylate copolymer is one that is compatible by itself with polycarbonate resin due to specific comonomers. Such comonomers are aromatic (meth)acrylic esters and (meth)acrylamides, cycloalkyl(meth)acrylamides and cycloalkylmaleimides. Thermoplastic molding compounds comprising polycarbonate and the new impact resistance modifier exhibit excellent impact resistance.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: March 5, 1991
    Assignee: Rohm GmbH Chemische Fabrik
    Inventors: Jens-Dieter Fischer, Werner Siol, Manfred Munzer, Thomas Rhein
  • Patent number: 4876311
    Abstract: The invention relates to opaque synthetic resins containing 1 to 30% by weight of cross-linked beads consisting of a polymer comprised of:(i) 9.9 to 59.9% by weight of at least one radically polymerizable monomer A containing an aromatic residue or nonaromatic monomers A' which contain a halogen;(ii) 90 to 40% by weight of vinyl monomers B which are copolymerizable with these monomers but different from them;(iii) 0.1 to 20% by weight of at least one cross-linking monomer V and(iv) 0 to 10% by weight of a strongly polar monomer Hand where (a) the refractive index of the polymer is higher than that of the polymer matrix and that (b) the average bead size of the beads is in the range of 20 to 50 microns.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: October 24, 1989
    Assignee: Rohm GmbH Chemische Fabrik
    Inventors: Jurgen Hennig, Heinz Vetter, Manfred Munzer
  • Patent number: 4749749
    Abstract: Transparent, thermoplastically processible polymer mixtures comprised of:(A) Polycarbonates, particularly bisphenol A polycarbonates; and(B) Copolymers of methyl methacrylate and monosubstituted (meth)acrylamides, the latter present in the amount of 5-25 wt. %, wherein the substituent on the amide nitrogen is a cyclic organic group having an aliphatic, aromatic, or heterocyclic structure, which has no appreciable absorption capability for visible light as far as the UV wavelength of 340 nm.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: June 7, 1988
    Assignee: Rohm GmbH Chemische Fabrik
    Inventors: Manfred Munzer, Winfried Wunderlich
  • Patent number: 4663199
    Abstract: A method for wet metallizing articles made, or having a surface to be metallized, of an acrylic polymer containing at least 0.01 percent of acrylamide, methacrylamide, or of an acrylate ester or amide of an alkanol or alkyl amine have a terminal basic nitrogen group, e.g., an amino, substituted amino, or basic nitrogen heterocyclic group.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: May 5, 1987
    Assignee: Rohm GmbH
    Inventors: Ralf Liebler, Manfred Munzer, Peter Quis, Petrus E. J. Legierse
  • Patent number: 4585818
    Abstract: Flame retardant molding compounds comprising polymers of methyl methacrylate having an average molecular weight between 1.times.10.sup.5 and 2.times.10.sup.5, which molding compounds contain from 8 to 15 weight percent of at least one chloroalkylphosphoric acid ester of the formula ##STR1## wherein R.sub.1 is alkyl or ##STR2## and R.sub.2 is hydrogen, methyl, ethyl, or chloro-substituted methyl or ethyl.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: April 29, 1986
    Assignee: Rohm GmbH
    Inventors: Karl A. Jung, Karl-Heinz Jakob, Manfred Munzer, Wilhelm Wopker
  • Patent number: 4576870
    Abstract: A method for making multilayered synthetic resin bodies by the coextrusion of thermoplastic molding compounds wherein at least one of the layers in the extruded body is to be protected against UV light, which comprises extruding at least one layer from a thermoplastic molding compound that is formed entirely or predominantly of a copolymer formed between monomers comprising in their molecules groups or structures which, because of their characteristic absorption of ultraviolet light, provide protection against ultraviolet light, together with other, known, monomers.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: March 18, 1986
    Assignee: Rohm GmbH
    Inventors: Ralf Liebler, Siegmund Besecke, Manfred Munzer
  • Patent number: 4521567
    Abstract: A method for making impact resistant molding compositions wherein a hard phase having a glass transition temperature above C. and consisting principally of methyl methacrylate is polymerized at least partially in a first stage, following which the monomers of a rubbery phase whose polymers have a glass transition temperature below C. are added in a second stage and the polymerization is carried to completion, polymerization of the hard phase in the first stage being performed in a presence of an oil soluble free radical initiator and of an organosulfur chain transfer agent having at least two thiol groups in the molecule, and polymerization of the monomers of the rubbery phase in the second stage being carried out with graft crosslinkers in the presence of the previously formed hard phase.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: June 4, 1985
    Assignee: Rohm GmbH
    Inventors: Peter J. Arndt, Walter Ludwig, Manfred Munzer, Werner Siol, Franz Wenzel
  • Patent number: 4507444
    Abstract: A process of making radically polymerizable compositions suitable for the production of impact resistant optically clear glass like plastic and forming the glass from such compositions is disclosed. Also taught are the polymerizable compositions and the final glass produced. An isocyanate terminated prepolymer based upon a polyol selected from polyesters, polyester amides, polycarbonates and polyacetals and diisocyanates selected from branched aliphatic isocyanates, cycloaliphatic isocyanates and aliphatic or cycloaliphatic isocyanates graft polymerized with vinyl monomers is chain extended with aliphatic or cyloaliphatic diamines while in solution in vinyl monomers consisting mainly of methacrylic acid esters. The chain extension is carried out with a deficit of amine and preferably to a viscosity at 20% solids in the vinyl monomers of between 200 and 30,000 cP at C. The composition is then radically polymerized to form the high impact glass like plastic alloy.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: March 26, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilhelm Slawyk, Gerhard Balle, Manfred Munzer, Adolf Wohnhas, deceased
  • Patent number: 4460721
    Abstract: A printing ink or varnish having a binder comprising isopropylmethacrylate and hydrophilic comonomers, particularly unsaturated carboxylic acids, their hydroxyalkyl esters, or a mixture thereof; preferably in combination with cellulose esters such as nitrocellulose, as an additional binder. The ink or varnish also contains dissolved or undissolved dyes, as well as a lower alkyl alcohol solvent. The printing and coatings thus produced are characterized by hardness and a high sealing stability.
    Type: Grant
    Filed: May 24, 1983
    Date of Patent: July 17, 1984
    Assignee: Rohm GmbH Chemische Fabrik
    Inventors: Wilhelm Elser, Manfred Munzer
  • Patent number: 4308354
    Abstract: What is disclosed are a method for making a transparent impact-resistant polymer comprising a rubbery phase of grafted polybutadiene and a hard copolymer phase, which polymer is adaptable to use as a molding material, which method comprises:(1) in a first polymerization stage, dissolving a solid polybutadiene rubber in a monomer mixture comprising (a) methyl methacrylate, (b) styrene, and (c) at least one of methyl acrylate or ethyl acrylate to give a solution containing from 3 to 10 percent by weight of said rubber, and then polymerizing the solution using an initiator promoting graft copolymerization and in the presence ab initio of a chain transfer agent until an amount of said monomer mixture which is one to two times the weight of said polybutadiene rubber introduced is converted, said monomers (a), (b), and (c) being present in said monomer mixture in a ratio by weight of (73.+-.5): (22.+-.2); (5.+-.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: December 29, 1981
    Assignee: Rohm GmbH
    Inventors: Karl A. Jung, Manfred Munzer, Heinz Vetter, Winfried Wunderlich
  • Patent number: 4224425
    Abstract: What is disclosed is a method for the partial polymerization of at least one vinyl monomer to form a mixture of said monomer with a polymer thereof, which comprises initiating polymerization of said monomer with a percarbonic acid ester and inhibiting further polymerization when the desired mixture is formed by addition thereto of a thioether, an organic disulfide, or a mercaptan, as are the partially-polymerized mixtures so produced, and their use for forming an organic glass by further polymerization thereof.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: September 23, 1980
    Assignee: Rohm GmbH
    Inventors: Peter Buergle, Karl Maurer, Manfred Munzer, Wilhelm Rosskopp, Franz Wenzel