Patents by Inventor Markus Parusel

Markus Parusel 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: 5714261
    Abstract: The invention concerns crosslinked plastic particles based on polymethyl (meth)acrylate PP with a particle diameter of 1-15 .mu.m, synthesized from the monomers:A) methyl methacrylate in fractions of 20 to 99.9 wt %;B) methacrylic acid ester of formula I: ##STR1## wherein R.sub.1 stands for a C.sub.2-8 alkyl radical, a C.sub.5-6 cycloalkyl radical, a C.sub.5-6 cycloalkyl radical substituted with C.sub.1 -C.sub.4 alkyl, a C.sub.6-14 aryl radical, a substituted C.sub.6-14 aryl radical or an aralkyl radical, in fractions of 0 to 79 wt %;C) acrylic acid ester of formula II:CH.sub.2 =CH--COOR.sub.2 (II)wherein R.sub.2 stands for a C.sub.1-8 alkyl radical, a C.sub.5-6 cycloalkyl radical which can be substituted with C.sub.1 -C.sub.4 alkyl, or a perhaps substituted C.sub.6-14 aryl radical or an aralkyl radical, in fractions of 0 to 50;D) at least one crosslinking monomer CM, which is, in fact, known, containing at least two radically polymerizable groups in the molecule in fractions of 0.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: February 3, 1998
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Werner Siol, Markus Parusel
  • Patent number: 5625021
    Abstract: The invention relates to a method for the production of poly(meth) acrylate particles with a particle diameter of 1-15 .mu.m, where the monomers M are polymerized according to the method of batch polymerization, with 20-50 parts by weight of monomer M in a liquid medium LM, consisting of 55-100% by weight of mineral oil, and with the addition of 0.1 to 5 parts by weight of a polymer emulsifier E and 0.05-5 parts by weight of a radical initiator.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: April 29, 1997
    Assignee: Roehm GmbH Chemishe Fabrik
    Inventors: Markus Parusel, Werner Siol, Heinz Vetter
  • Patent number: 5473019
    Abstract: The invention relates to a method of manufacturing monodisperse poly(meth)acrylates by the method of precipitation polymerization, comprising polymerizingi) a monomer mixture comprising at least 60 wt. % of monomer of formula I ##STR1## where R represents hydrogen or methyl; and R.sub.1 represents a C.sub.1-8 alkyl group, a C.sub.6-24 aryl group, a C.sub.1-8 alkyl substituted aryl group or an aralkyl group;ii) 0.1-10 wt. % based on the weight of the monomer mixture of a block copolymer having polystyrene components; andiii) 0.02-2 wt. % based on the weight of the monomer mixture of a percarbonic acid ester;in a halogen free solvent comprising 70 to 100 wt. % of cyclohexane.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: December 5, 1995
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Werner Siol, Wilhelm Wopker, Erwin Felger, Markus Parusel
  • Patent number: 5458975
    Abstract: The invention relates to a method of manufacturing monodisperse poly(meth)acrylates by the method of precipitation polymerization, comprising polymerizingi) a monomer mixture comprising at least 60 wt. % of monomer of formula I ##STR1## where R represents hydrogen or methyl; andR.sub.1 represents a C.sub.1-8 alkyl group, a C.sub.6-24 aryl group, a C.sub.1-8 alkyl substituted aryl group or an aralkyl group;ii) 0.1-10 wt. % based on the weight of the monomer mixture of a block copolymer having polystyrene components; andiii) 0.02-2 wt. % based on the weight of the monomer mixture of a percarbonic acid ester;in a halogen free solvent comprising 70 to 100 wt. % of cyclohexane.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: October 17, 1995
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Werner Siol, Wilhelm Wopker, Erwin Felger, Markus Parusel
  • Patent number: 5451650
    Abstract: The invention relates to a method of manufacturing monodisperse poly(meth)acrylates by the method of precipitation polymerization, comprising polymerizingi) a monomer mixture comprising at least 60 wt. % of monomer of formula I ##STR1## where R represents hydrogen or methyl; andR.sub.1 represents a C.sub.1-8 alkyl group, a C.sub.6-24 aryl group, a C.sub.1-8 alkyl substituted aryl group or an aralkyl group;ii) 0.1-10 wt. % based on the weight of the monomer mixture of a block copolymer having polystyrene components; andiii) 0.02-2 wt. % based on the weight of the monomer mixture of a percarbonic acid ester;in a halogen free solvent comprising 70 to 100 wt. % of cyclohexane.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: September 19, 1995
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Werner Siol, Wilhelm Wopker, Erwin Felger, Markus Parusel