Patents by Inventor Chinsoo Lee

Chinsoo Lee 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: 5387619
    Abstract: A process for inhibiting chemical reactions of a fluid functionally reactive organic material by mixing it with supercritical fluid ("SCF") or near supercritical fluid, especially carbon dioxide maintained under supercritical fluid conditions. The process includes the ability to restrain a chemical reaction that occurs otherwise between functionally compatible organic molecules by the inclusion of supercritical fluid, particularly CO.sub.2, with the molecules, so that the reaction can be made to occur according to a predetermined but different from normal pattern.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: February 7, 1995
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Chinsoo Lee, Kenneth L. Hoy
  • Patent number: 5203843
    Abstract: A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays. The coatings compositions are sprayed by passing the composition under pressure through an orifice into the environment of the substrate.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: April 20, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Kenneth L. Hoy, Kenneth A. Nielsen, Chinsoo Lee
  • Patent number: 5171613
    Abstract: This invention is directed to improved spraying apparatus for coating substrates with a coating material and supercritical fluid which apparatus is provided with various features, either alone or in combination, to prevent undesirable premature cooling of the coating mixture which might detrimentally affect the final coating on the substrate; to prevent undesirable depressurization of supercritical fluid contained in the coating mixture which remains in the spray gun after spraying has been stopped; and/or to desirably provide the ability to mix the components of the coating mixture directly in the spray gun. Methods for utilizing these features in the spraying apparatus of the present invention are also disclosed.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: December 15, 1992
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Hendrik F. Bok, Charles W. Glancy, Kenneth L. Hoy, Chinsoo Lee, Kenneth A. Nielsen
  • Patent number: 5110903
    Abstract: A process is provided for the preparation of a mixture of parylene dimers wherein the distribution of dimers within the mixture is predetermined by the proper selection of halogenated and non-halogenated 2,2-paracyclophane starting material. Since the dimers are free of alpha-halogens, the formation of environmentally undesirable acid halides during the deposition of parylene films and coatings is avoided. Since the dimers are useful in the preparation of inert, transparent, conformal coatings of parylene, desirable chemical and/or physical properties can be imparted to such coating by formation of a dimer mixture of a predetermined composition. The parylene film properties, composition and deposition conditions will be different by varying dimer distribution.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: May 5, 1992
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Chinsoo Lee, David R. Bassett
  • Patent number: 5108799
    Abstract: A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays. The coatings compositions are sprayed by passing the composition under pressure through an orifice into the environment of the substrate.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: April 28, 1992
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Kenneth L. Hoy, Kenneth A. Nielsen, Chinsoo Lee
  • Patent number: 5027742
    Abstract: A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: July 2, 1991
    Assignee: Union Carbide Chemicals and Plastics Technology Corporation
    Inventors: Chinsoo Lee, Kenneth L. Hoy, Marc D. Donohue
  • Patent number: 4923720
    Abstract: A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: May 8, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: Chinsoo Lee, Kenneth L. Hoy, Marc D. Donohue
  • Patent number: 4906723
    Abstract: A method is described for producing dispersions of polyurea and the like in polyols of increased stability by polymerizing an amine and an isocyanate in the presence of an aminoalcohol, typically an aminopolyol, having the following formula: ##STR1## wherein A and A' are individually connective atoms which may be same or different, and are selected from the group consisting of carbon and oxygen or combinations thereof with hydrogen atoms or the like satisfying the valences; B is a member selected from the group consisting of nitrogen, NR, R being alkyl or aryl, or CR', R' being hydrogen, alkyl or aryl; D is a member selected from the group consisting of ##STR2## wherein a has a value of one to four; X is a member selected from the group consisting of OH, NH.sub.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: March 6, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: Kenneth L. Hoy, Glenn A. Taylor, Chinsoo Lee
  • Patent number: 4849559
    Abstract: A process is provided for the preparation of the dimer, dichloro-[2,2]paracyclophane, which is useful as the starting material for the deposition of conformal parylene coatings employed, for example, in the electronics industry for the protection of various sensitive electronic components.The process avoids the normally low yields of chlorinated dimer formed by the chlorination of 2,2-paracyclophane and instead utilizes the Hofmann elimination of 2(3)-chloro-p-methylbenzyltrimethylammonium hydroxide by conducting the elimination reaction under carefully controlled conditions of reaction temperature and profile, reaction feed configuration, water concentration in the reactor and the use of a cosolvent, certain reaction promoters, or a combination thereof.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: July 18, 1989
    Assignee: Union Carbide Corporation
    Inventors: Chinsoo Lee, David R. Bassett
  • Patent number: 4806702
    Abstract: An improved process is provided for the preparation of the dimer, 2,2-paracyclophane, which is useful as the starting material for parylene conformal coatings used in the electronics industry for the protection of various sensitive electronic components.The process comprises optimization of the normally low yield of dimer formed by the Hofmann elimination reaction of p-methylbenzyltrimethylammonium halide by conducting the elimination reaction in the presence of dimethysulfoxide and certain reaction promoters.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: February 21, 1989
    Assignee: Union Carbide Corporation
    Inventors: Chinsoo Lee, David R. Bassett
  • Patent number: 4769505
    Abstract: An improved process is provided for the preparation of the dimer, 2,2-paracyclophane, which is useful as the starting material for parylene conformal coatings used in the electronics industry for the protection of various sensitive electronic components.The process comprises optimization of the normally low yield of dimer formed by the Hofmann elimination reaction of p-methylbenzyltrimethylammonium hydroxide by conducting the elimination reaction in the presence of a cosolvent and certain reaction promoters.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: September 6, 1988
    Assignee: Union Carbide Corporation
    Inventors: Chinsoo Lee, David R. Bassett