Patents Represented by Attorney James B. Robinson
  • Patent number: 5393831
    Abstract: Shelf stable nonwoven fabrics and films are made from polyolefin compositions which comprise a polyolefin which contains no more than a minor amount of a phenolic antioxidant, a water-sensitive stabilizer, a transition metal organic salt and an oxidizable unsaturated compound.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: February 28, 1995
    Assignee: Kimberly-Clark Corporation
    Inventor: Robert L. Hudson
  • Patent number: 5334639
    Abstract: An aqueous starch oil sizing composition is provided which produces improved processibility in woven and non-woven applications. The sizing combines a high amylose corn starch which has been derivatized with propylene oxide, with a low amylose highly crosslinked corn starch. The sizing also includes lubricants which may be oils or waxes and a lubricant which is the salt of a polyamino functional polyamide resin. Other emusifiers, humectants, lubricants, defoamers, and biocides may be present. The size also includes a silane coupling agent such as gamma glycidoxy propyl trimethoxy silane which can be hydrolyzed. Strands of glass fiber which have been treated with this size have shown a reduced tendency to shed the size from the strands, a reduction in the buildup of broken filaments or "fuzz" on processing equipment and reduced strand breakage.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: August 2, 1994
    Assignee: PPG Industries, Inc.
    Inventor: William B. Rice
  • Patent number: 5332613
    Abstract: Disclosed is an elastic nonwoven web containing a coherent matrix of fibers formed from an extrudable blend composed of an elastomeric A-B-A-B tetrablock copolymer where A is a thermoplastic polymer block and where B is an isoprene monomer unit hydrogenated to substantially a poly(ethylene-propylene) monomer unit. The elastic nonwoven web adapted to have an elastic modulus of less than about 1.25 which is locally constant during elongation of the web up to about 250 percent. The elastic nonwoven web may also include at least one type of nonelastic fibers and/or particulate materials distributed within or on the matrix of elastomeric fibers. The elastic nonwoven web may be incorporated into a multilayer material and/or may be a component of a composite elastic material in which the elastic web is joined to a gatherable layer at spaced apart locations so that the gatherable layer is gathered between the spaced-apart locations.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: July 26, 1994
    Assignee: Kimberly-Clark Corporation
    Inventors: Jack D. Taylor, Jon E. Tinsley
  • Patent number: 5320891
    Abstract: Disclosed is a method of producing a nonwoven material having improved resistance to penetration by particles.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: June 14, 1994
    Assignee: Kimberly-Clark Corporation
    Inventors: Ruth L. Levy, Michael T. Morman
  • Patent number: 5288791
    Abstract: An elastic nonwoven web is formed from elastic fibers composed of a blend of (1) a styrene-poly(ethylene-propylene)-styrene thermoplastic elastomeric block copolymer or a mixture of a styrene-poly(ethylene-propylene)-styrene elastomeric block copolymer and a styrene-poly(ethylene-butylene)-styrene elastomeric block copolymer, and (2) a tackifying resin in which the elastic nonwoven web has a stress relaxation of less than about 30 percent. The blend used to form the elastic nonwoven web and/or elastic fibers may also include a polyolefin and an extending oil.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: February 22, 1994
    Assignee: Kimberly-Clark Corporation
    Inventors: L. Warren Collier, IV, Steven R. Stopper
  • Patent number: 5264288
    Abstract: A process for coating a non-conductive substrate, such as glass, ceramic or plastic, which comprises applying to the surface of the substrate a coating of a silylated polyamine-noble metal (SPNM) complex and then optionally bringing the coated substrate so obtained into contact with a solution containing a metal salt, such as a salt of nickel, cobalt or copper, to obtain plating of metal from the latter solution onto the surface of the substrate.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: November 23, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Balbhadra Das, Robert G. Swisher
  • Patent number: 5242958
    Abstract: A simplified aqueous sizing composition utilizing a variety of components achieves improved stability, wettability and strength characteristics. The composition utilizes one or more aqueous, soluble, dispersible or emulsifiable bisphenol A type polyester film forming polymers with an epoxy containing film forming copolymer compatible with and soluble in the matrix polymer. One or more organo-silane coupling agents are also utilized. The sizing composition preferably includes a single nonionic surfactant in conjunction with a cationic amidated polyamine lubricant. One or more anti-static agents, generally cationic organic quaternary ammonium salts having one or more alkoxy moieties, are utilized in an effective anti-static amount. An anti-foaming agent may also be utilized for the prevention or suppression of foam during the mixing process. The improved stability and wettability characteristics of the aqueous sizing composition are preferably achieved through the use of a single epoxidized surfactant.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: September 7, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Michael W. Klett, Kenneth D. Beer
  • Patent number: 5219656
    Abstract: A unique composition of matter useful for treating glass fibers is claimed containing a film forming polymer, an organo coupling agent, a filament lubricant and an allylic compound, such as triallylcyanurate. The glass fibers carrying the dried residue of an aqueous chemical treating composition containing the unique chemical treating composition can be used to prepare a thermosetting plastic composite having improved strength. The composites so prepared are useful in making clear, translucent panels of improved weatherability and pultrusion profiles having higher strengths, such as compressive, shear and flexural strengths.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: June 15, 1993
    Assignee: PPG Industries Inc.
    Inventors: Michael W. Klett, Kenneth D. Beer
  • Patent number: 5147431
    Abstract: Bushings and bushing assemblies for supplying molten vitreous material in the form of exudations to be attenuated into filaments include a heat resistant cushioning material is provided under at least a portion of the flange portion of the bushing to thereby accommodate any thermal expansion of the bushing with respect to the insulation castable refractory material used to cement the bushing in place. The end walls of the bushing are contoured to thereby uniformly distribute the operating stresses occurring in the area of the junction of the flange and the side walls and the end walls of the bushing when the bushing is heated.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: September 15, 1992
    Assignee: PPG Industries, Inc.
    Inventor: Dean J. Gaertner
  • Patent number: 5120363
    Abstract: An aqueous chemical treating composition for glass fibers results in improved processing of the treated fibers in a bulking operation. The size has a starch-oil size with an imine-containing alkyl alkoxy silane. More particular, the size has one starch, one nonionic oil-type lubricant, one wax, one emulsifier for the oil, a nonionic wetting agent and a cationic lubricant and glycerine and the imine-containing silane and water where the silane is present in an amount of 0.1 to 10 weight percent of the solids.
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: June 9, 1992
    Assignee: PPG Industries, Inc.
    Inventor: Garry D. Puckett