Patents by Inventor Charles H. Blevins, II

Charles H. Blevins, II 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).

  • Surfactants for manufacture of urethane foams
    Patent number: 5145879
    Abstract: Silicone surfactants having a siloxane backbone and a mixture of high and low atomic mass oxyalkylene pendant groups, these polyether pendants having average atomic masses of 1500-6000 and 300-750 respectively. The surfactants of the invention operate in polyurethane foam compositions to provide stable foams over a range of surfactant concentrations while still producing product foams having relatively constant breathability. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: September 8, 1992
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Richard A. Budnik, Charles H. Blevins, II, Gerald J. Murphy, Wojciech Grabowski, Raymond L. Cobb
  • Process for the manufacture of certain new silicone polyether copolymers for polyurethane foam manufacture
    Patent number: 5110970
    Abstract: This invention relates to silicone surfactants, and more particularly, to synthesis of siloxane-polyether surfactants having polyether backbones.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: May 5, 1992
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Charles H. Blevins, II, Paul L. Matlock, Gerald J. Murphy
  • Olefin polymer compositions containing polyorganosiloxanes and the use thereof in the production of film material and polyorganosiloxanes
    Patent number: 5003023
    Abstract: The present invention relates to olefin polymer compositions which can be extruded into film material characterized by improved stability and optical properties. In particular, this application is directed olefin polymer compositions containing specific polyorganosiloxanes bearing a hydroxyl functionality.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: March 26, 1991
    Assignees: Union Carbide Chemicals, Plastics Technology Corporation
    Inventors: George N. Foster, Herbert E. Petty, Charles H. Blevins, II, Roswell E. King, III
  • Polymer compositions stabilized with polydialkylsiloxanes containing siloxy units having certain defined pendant sterically hindered phenol moieties
    Patent number: 4960810
    Abstract: The present invention relates to olefin polymers stabilized with polydialkylsiloxanes containing pendant sterically hindered phenol moieties. The compounds are represented by the general formula MD.sub.x D*.sub.y M.sub.A 2 wherein M=R"R.sub.2 SiO.sub.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: October 2, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: George N. Foster, Herbert E. Petty, Charles H. Blevins, II.
  • Olefin polymer compositions containing polyorganosiloxanes and the use thereof in the production of film material and polyorganosiloxanes
    Patent number: 4931492
    Abstract: The present invention relates to olefin polymer compositions which can be extruded into film material characterized by improved stability and optical properties. In particular, this application is directed olefin polymer compositions containing specific polyorganosiloxanes bearing a hydroxyl functionality.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: June 5, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: George N. Foster, Herbert E. Petty, Charles H. Blevins, II, Roswell E. King, III
  • Polysiloxanes with pendant sterically hindered phenol moiety connected to the silicon atom via a carbonylyoxy-containing link
    Patent number: 4879378
    Abstract: The present invention relates to polysiloxanes containing pendant sterically hindered phenol moieties. The compounds are represented by the general formula MD.sub.X D'.sub.y M.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: November 7, 1989
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: George N. Foster, Herbert E. Petty, Charles H. Blevins, II
  • Polysiloxane-polyoxyalkylene terpolymers for polyurethane foam manufacture
    Patent number: 4855329
    Abstract: A polysiloxane-polyoxyalkylene composition of the nominal formula: ##STR1## wherein R is an alkyl group having 1 to 3 carbon atoms and R.degree., R', R" and R'" are individually monovalent polyoxyalkylene polyethers attached to the silicon atom through a difunctional link; and,the polyoxyalkylene of R' is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and has an average molecular weight of from about 3,000 to about 5,500;the polyoxyalkylene of R" is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and has an average molecular weight of from about 800 to about 2,900; andthe polyoxyalkylene of R'" is a polyoxypropylene polyether having an average molecular weight from about 130 to about 1200;R.degree.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: August 8, 1989
    Assignee: Union Carbide Corporation
    Inventors: Charles H. Blevins, II, William B. Herdle, Gerald J. Murphy
  • Polysiloxane-polyoxyalkylene terpolymers for polyurethane foam manufacture
    Patent number: 4814409
    Abstract: A polysiloxane-polyoxyalkylene composition of the nominal formula: ##STR1## wherein R is an alkyl group having 1 to 3 carbon atoms and R.degree., R', R" and R'" are individually monovalent polyoxyalkylene polyethers attached to the silicon atom through a difunctional link; and,the polyoxyalkylene of R' is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and has an average molecular weight of from about 3,000 to about 5,500;the polyoxyalkylene of R" is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and has an average molecular weight of from about 800 to about 2,900; andthe polyoxyalkylene of R'" is a polyoxypropylene polyether having an average molecular weight from about 130 to about 1200;R.degree.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: March 21, 1989
    Assignee: Union Carbide Corporation
    Inventors: Charles H. Blevins, II, William B. Herdle, Gerald J. Murphy