Patents Examined by Allan M. Lieberman
  • Hot melt adhesives based on ethylene-n-butyl acrylate
    Patent number: 4874804
    Abstract: Hot melt packaging adhesive compositions consisting essentially of 35 to 45% by weight of an ethylene n-butyl acrylate copolymer containing 25-45% by weight, preferably 30 to 40% n-butyl acrylate and having a melt index of at least 50; 35 to 55% of a terpene phenolic tackifier; and 10 to 20% by weight of a high melting synthetic wax provide adhesives characterized by an excellent balance of high and low temperature performance without sacrifice to machinability or thermal stability.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: October 17, 1989
    Assignee: National Starch and Chemical Corporation
    Inventors: Francis X. Brady, Thomas F. Kauffman
  • Polymer blend
    Patent number: 4874801
    Abstract: Polymer blends of improved properties are produced from (1) linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, (2) copolymers of ethylene and .alpha.,.beta.-ethylenically unsaturated carboxylic acid and (3) glass fibers.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: October 17, 1989
    Assignee: Shell Oil Company
    Inventors: Eric R. George, Richard L. Danforth, Paul S. Byrd
  • Polymer blend
    Patent number: 4874819
    Abstract: Improved melt stability without the loss of properties of strength and impact resistance are exhibited by blends of (a) linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and (b) ethylene-.alpha.,.beta.-ethylenically unsaturated acid copolymer.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: October 17, 1989
    Assignee: Shell Oil Company
    Inventors: Eric R. George, Robert G. Lutz, Edgar J. Smutny
  • Heat-curable molding compositions
    Patent number: 4873284
    Abstract: Bismaleimide resion systems containing a bismaleimide and a multinuclear alkenyl and/or alkynyl arene as comonomers have improved toughness while maintaining high glass transition temperatures.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: October 10, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Ittemann, Philipp Eisenbarth
  • Railroad flangeway filler and expansion joint sealer
    Patent number: 4871809
    Abstract: A flangeway filler and sealing composition suitable for use in a flangeway or expansion joint in a railroad crossing of a roadway surface prepared by the steps of (i) placing cryogenically granulated elastomeric particles in a suitable container; (ii) adding a polyurethane resin to said cryogenically granulated elastomeric particles; (iii) mixing the cryogenically granulated elastomeric particles and the polyurethane resin. The cryogenically granulated elastomeric particles have an average particle size of less than about 3 mm, and the ratio of the cryogenically granulated elastomeric particles to the polyurethane resin is greater than 6 to 1 by weight.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: October 3, 1989
    Assignee: Szarka Enterprises, Inc.
    Inventor: Paul J. Szarka
  • Thermoplastic polymer composition
    Patent number: 4871799
    Abstract: A thermoplastic polymer composition containing (a) a polyester or polyamide thermoplastic polymer and (b) a block graft copolymer which comprises (i) as the backbone portion at least one of a block copolymer or a hydrogenated block copolymer containing blocks of a styrene-type polymer and blocks of a butadiene-type polymer, and (ii) as the graft portion a radical disintegrative polymer, said block graft copolymer having been chemically modified with molecular units containing a functional group which will combine or interact with said thermoplastic polymer a). The thermoplastic polymer composition is superior in flexibility, resistance to chemicals and oil, impact resistance, moldability and elasticity.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: October 3, 1989
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Shigeo Kobayashi, Takashi Nishida
  • Pneumatic tires
    Patent number: 4871794
    Abstract: A pneumatic tire having improved heat resistance and gripping performance is obtained by using as a tread rubber a rubber composition containing particular amounts of specified p-phenylene diamine derivative and specified carbon black.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: October 3, 1989
    Assignee: Bridgestone Corporation
    Inventors: Michio Itoh, Hisao Yamamoto, Nobuyuki Okamura
  • Laminar structures prepared with polyketone structural adhesives
    Patent number: 4871618
    Abstract: A laminar structure consisting of a substrate and the structural adhesive consisting of:a linear alternating copolymer or interpolymer consisting of carbon monoxide and at least one ethylenically unsaturated hydrocarbon.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: October 3, 1989
    Assignee: Shell Oil Company
    Inventors: Peter A. Kinneberg, Thomas A. Armer
  • Reactive coatings comprising an acid-functional compound, an anhydride-functional compound, an epoxy-functional compound and a hydroxy-functional compound
    Patent number: 4871806
    Abstract: Curable compositions which comprise:(i) an acid-functional compound having an average of at least two carboxylic acid groups per molecule; and(ii) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhdyride groups per molecule; and(iii) an epoxy-functional compound having an average of at least one epoxy group per molecule; and(iv) a hydroxy-functional compound having an average of at least two hydroxyl groups per molecule;wherein at least one of the compounds (i), (ii), (iii) or (iv) comprises a film forming polymer.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: October 3, 1989
    Assignee: The Sherwin-Williams Company
    Inventors: Mohamad D. Shalati, James A. Marquart
  • Powdery copolymers of vinyl ester-ethylene
    Patent number: 4870118
    Abstract: A treated powdery copolymer of vinyl ester-ethylene comprises a powdery vinyl ester-ethylene copolymer. The surface of the copolymer is coated with a wax having a melting point of at least 40.degree. C., at least said melting point.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: September 26, 1989
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Masafumi Kinoshita, Shuichi Maeda, Akira Urabe
  • Rubber article comprising contiguous portions of an isoprene rubber composition and a butadiene rubber composition containing a polymeric activator
    Patent number: 4869968
    Abstract: Butadiene polymer rubber compositions containing a polymeric activator have particularly beneficial characteristics. The activator is an interpolymer of a vinylpyridine monomer and a diene hydrocarbon monomer which interpolymer contains from 20% to 65% by weight of vinylpyridine units. Composite articles made from these rubber compositions together with contiguous portions of a dissimilar rubber compound show greater strength and adhesion as a result of the presence of the activator in the butadiene polymer rubber composition.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: September 26, 1989
    Assignee: Monsanto Company
    Inventors: Aubert Y. Coran, Leonard H. Davis
  • Process for reclaiming polyethylene terephthalate scrap contaminated with chlorine-containing polymer
    Patent number: 4870110
    Abstract: Polyethylene terephthalate scrap material containing on its surface a chlorine-containing polymer such as, for example, polyvinylidene chloride or polyvinyl chloride, can be recovered and reused by melt-blending it with a polymer from a defined class of ethylene copolymers containing an epoxy group, and melt processing the blend in the same manner as virgin polyethylene terephthalate. The recovered and reprocessed polymer material has good physical properties and barrier properties.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: September 26, 1989
    Assignee: E. I. DuPont de Nemours and Company
    Inventors: Vinodkumar Mehra, Pallatheri M. Subramanian
  • Polyethylene modified asphalts
    Patent number: 4868233
    Abstract: The present invention relates to an improved polyethylene modified asphaltic composition and a method for its manufacture. More specifically, when certain linear polyethylene compounds are added to an asphalt that is low in asphaltenes but relatively high in saturates, there results a composition which has excellent storage stability, phase compatibility and creep resistance relative to unmodified asphalts. The improved asphaltic composition is particularly well suited for use as a binder in paving materials and as a coating or saturant for roofing products.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: September 19, 1989
    Assignee: Exxon Research and Engineering Company
    Inventor: Lyle E. Moran
  • Casting resins on the basis of acrylic acid esters
    Patent number: 4868239
    Abstract: Disclosed are casting resins made from acrylic acid esters with a high content of finely dispersed fillers. The casting resins contain a polymeric organosilicon compound having functional and nonfunctional groups. As functional groups, the copolymer contains one or more alkoxysilyl groups and one or more (meth)acryloxysilyl groups. The copolymer furthermore contains by copolymerization at least one nonfunctional comonomer having an ethylenically unsaturated grouping as well as an additional comonomer of the group of the vinyl carboxylic acid esters and (meth)acrylic acid esters, if desired. The addition of these polymeric organosilanes to known casting resins brings about a greater lowering of the viscosity of these resins, which are used, for example, for the manufacture of sanitary appliances.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: September 19, 1989
    Assignee: Dynamit Nobel AG
    Inventors: Gunther Bernhardt, Horst Hanisch
  • Composition comprising a blend of an ethylene-carbon monoxide interpolymer and a maleated, partially hydrogenated block copolymer
    Patent number: 4868242
    Abstract: Blends of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon with specified amounts of a maleated, partially hydrogenated block copolymers demonstrate improved properties of impact strength and flex modulus.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: September 19, 1989
    Assignee: Shell Oil Company
    Inventors: Eric R. George, William P. Gergen
  • Polymer blend
    Patent number: 4866128
    Abstract: Polymer blends of improved properties comprise a uniform blend of (1) a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and (2) a selectively hydrogenated block copolymer of a vinyl aromatic compound and a conjugated alkadiene.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: September 12, 1989
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Robert G. Lutz
  • Composition for coating, sealing, and protecting purposes
    Patent number: 4866116
    Abstract: Composition for coating, filling, binding and protection, comprising rubber, whereby it comprises rubber having a particle size of at most 0.4 mm present in an amount of 20-50% by weight, and a curable polymer base present in an amount of 40-50% by weight, which components after curing of said polymer base are the elastic and adhesive part of the composition. The invention further relates to a process for preparation, and a process for applying said composition.
    Type: Grant
    Filed: January 22, 1987
    Date of Patent: September 12, 1989
    Assignee: Procoat Scandinavia Aktiebolag
    Inventors: Rolf L. Ek, Sune B. Nygren
  • Method of reducing the adhesion of bubbles in medical equipment
    Patent number: 4861617
    Abstract: A method of reducing the adhesion of bubbles to the surfaces of a medical administration set with which a parenteral liquid comes in contact prior to its introduction into a patient by treating the surfaces of the medical administration set with which the liquid comes in contact to increase the critical surface tension thereof prior to contacting the surfaces of the medical administration set with the liquid, preferably by radiation grafting with a solution of a monofunctional monomer compound.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: August 29, 1989
    Assignee: Pall Corporation
    Inventors: David B. Pall, Peter J. Degen, Vlado I. Matkovich, Thomas C. Gsell
  • Polymer blends with high water absorption
    Patent number: 4859719
    Abstract: Miscible blends of slid, non-crosslinked polymers are disclosed. The blends comprise from 2 to 95 parts by weight of a water-insoluble, hydrophobic polymer and, correspondingly from 98 to 5 parts by weight of a hydrophilic polymer. The blends are capable of absorbing at least their own weight in water.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: August 22, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Ronald F. Ofstead
  • Polymer blend compositions
    Patent number: 4857590
    Abstract: Polymer blend compositions exhibiting good antistatic properties and ductility comprise a styrenic polymer, an epihalohydrin copolymer and an acrylate polymer present in an amount sufficient to effect compatability of the styrenic polymer and the epihalohydrin polymer as compared with a blend of the styrenic polymer and the epihalohydrin copolymer not including the acrylate polymer. In a more specific embodiment the polymer blend compositions comprise from about 40 to about 96 percent by weight of a styrenic polymer, from about 2 to about 50 percent by weight of an epihalohydrin copolymer, and from about 2 to about 50 percent by weight of an acrylate polymer.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: August 15, 1989
    Assignee: GE Chemicals, Inc.
    Inventors: Satish K. Gaggar, James M. Dumler, Thomas B. Cleveland