Microcrystalline Wax Patents (Class 524/488)
  • Patent number: 5281652
    Abstract: Emulsifiable linear polyethylene compositions which exhibit good hardness and color characteristics can be obtained by oxidizing a blend of about 90 to 60% by weight of either linear low density polyethylene or high density polyethylene and about 10 to 40% by weight paraffin wax to an acid number of 12 to 30 mg KOH/g. The water emulsions obtained from the emulsifiable polyethylene compositions are useful as textile lubricants and fruit coatings.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: January 25, 1994
    Assignee: Eastman Kodak Company
    Inventor: Gregory A. Cook
  • Patent number: 5270360
    Abstract: A two-phase thermoplastic composition adapted for forming thermoplastic patterns. The composition comprises an organic thermoplastic pattern material and at least about 5% by weight of discrete particles of cross-linked poly(methylmethacrylate) that are physically stable at temperatures above 130.degree. F. Also disclosed are investment casting patterns of such composition and processes utilizing such composition.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: December 14, 1993
    Assignee: Yates Manufacturing Company
    Inventor: Paul Solomon
  • Patent number: 5231118
    Abstract: The invention relates to a pressure-activatible correcting tape, which has a conventional carrier and a lift-off layer for removing typed or printed type images, the lift-off layer containing a wax, a binder and optionally further additives. This correcting tape is characterized in that the lift-off layer contains approximately 5 to 35% by weight of butyl rubber, approximately 30 to 90% by weight of wax and approximately 0.1 to 5% by weight of a dispersant having a dispersing action in an aqueous medium for the aforementioned substances. The lift-off layer can be produced by means of an aqueous coating liquid, which is environmentally advantageous compared with organic dispersants. This correcting tape can be used without restriction and independently of the type of typewriter.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: July 27, 1993
    Assignee: Caribonum Limited
    Inventors: Ian Hogarth, Andrew Scott, Christine Abbott, Robert I. Wilkinson
  • Patent number: 5223562
    Abstract: A thermosetting powder coating composition comprises (a) a fluororesin having reactive group for crosslinking in the molecule which contains 10 weight % or more of fluorine and has glass transition temperature in the range from 35.degree. to 120.degree. C., (b) a hardener which can form crosslinking by reaction with the reactive group for crosslinking in the fluororesin (a) and (c) a synthetic wax or a natural wax. The amount of the fluororesin is in the range from 60 to 97 weight % and the amount of the hardener is in the range from 3 to 40 weight % based on the total of the fluororesin and the hardener. The amount of the synthetic wax or the natural wax is in the range from 0.01 to 10 weight parts based on 100 weight parts of the total of the fluororesin and the hardener.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: June 29, 1993
    Assignee: NOF Corporation
    Inventors: Chiaki Sagawa, Manabu Katagiri, Toru Kurashina
  • Patent number: 5189092
    Abstract: A method and apparatus for the continuous extrusion of composite solid articles from feed mixtures comprising a substantially uniform mixture of particulate binder material and particulate primary material in which the feed mixture is forced through an extrusion die of substantially uniform cross-section and subject to heat, pressure and cooling which consolidates the feed mixture whereby it emerges from the die as a solid composite article and in which the pressure in the extrusion die is supplied by back-pressuring means external of the die. Solid filter elements of activated carbon particles for a wide variety of filtering applications may be formed using the process and apparatus.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: February 23, 1993
    Assignee: Koslow Technologies Corporation
    Inventor: Evan E. Koslow
  • Patent number: 5169890
    Abstract: The present invention relates to a thermoplastic hot melt adhesive comprising(a) a block copolymer, said block copolymer being prepared utilizing a bromide based coupling agent, said block copolymer comprising at least two monoalkenyl arene polymer end blocks A and at least one elastomeric conjugated diene polymer mid block B, and said block copolymer having about 8 to about 65 percent by weight of said monoalkenyl arene polymer block content, each polymer block A having an average molecular weight of between about 5,000 and about 125,000, and each polymer block B having an average molecular weight of between about 10,000 and about 300,000,(b) a polyisobutylene rubber,(c) a partially cross-linked polyisobutylene rubber(d) a compatible tackifying resin,(e) a phenolic antioxidant,(f) a non-reactive phenolic resin,(g) a fluorocarbon surface active agent, and(h) a petroleum derived wax.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: December 8, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Rajan Eadara, Julie Szymborski, Irvin Jackson
  • Patent number: 5155155
    Abstract: An oxidized polyethylene wax or other wax in the form of a salt with a metal selected from groups IB, IIB, IIA, IIIA, IIIB, VIB, VIIB and VIIIB of the Periodic Table of the Elements acts as a photoactivator in a polymer composition and degrades the latter. The quantity of the additive can vary from 0.1 to 2.0% by weight, relative to the weight of the composition. The additive can be added directly or, more suitably, via a masterbatch.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: October 13, 1992
    Assignee: Hoechst Italia, S.p.A.
    Inventor: Riccardo Jurlaro
  • Patent number: 5153064
    Abstract: The invention describes a hot-melt adhesive substance for the coating of fabrics, especially of lining materials of outer wear, comprising a hot-melt adhesive paste on a copolyester basis as the base layer and a covering layer of a hot-melt adhesive. The inventive hot-melt adhesive substance is characterized in that the hot-melt adhesive paste of the base layer contains a mixture of copolyester and low-pressure polyethylene. The covering layer of hot-melt adhesive preferably contains copolyamide. When using the inventive hot-melt adhesive substance, a raster-pattern coated fabric can be obtained in which the hot-melt adhesive substance has substantially improved adhesive strength as well as a high degree of washing and cleaning stability.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: October 6, 1992
    Assignee: Kufner Textilwerke GmbH
    Inventor: Josef Hefele
  • Patent number: 5145749
    Abstract: Erasable coatings for xerography paper comprise a pigment such as calcium carbonate in a binder such as an aqueous emulsion of an acrylic polymer. The erasability of the coating is improved by replacing at least 15 wt % of the binder with a polyalkane or (preferably) polyalkene wax, such as an aqueous emulsion of a polyolefin.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: September 8, 1992
    Assignee: James River Graphics Limited
    Inventor: Michael K. Matthew
  • Patent number: 5132355
    Abstract: Liquid hydrocarbons are gelled by polyethylene block copolymers (PEBC's) to yield storage stable gels and sols that contain no metal-containing gelling agents and which compositions are thermally reversible; i.e., they melt into homogeneous liquids upon heating and upon cooling resume their previous state as a gel or sol.The PEBC gelling agents are block copolymers consisting of quasi-polyethylene crystalline "hard" blocks A and amorphous hydrocarbon "soft" blocks B. Crystallinity of the blocks A imparts the gel or sol with a sharp melting point which is dependent upon the PEBC chemical composition and concentration within the hydrocarbon. The gels and sols may contain suspended solid particles, such as powdered metals, fillers or oxidizers and are pumpable even when these suspended particles are present.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: July 21, 1992
    Inventor: Boris Nahlovsky
  • Patent number: 5128397
    Abstract: Hot melt adhesive compositions stabilized against thermal degradation, discoloration, skin formation and substantial viscosity changes, said adhesives being based on ethylene-vinyl acetate copolymer and a hydrocarbon tackifying resin and containing a stabilizer system of a hindered phenol antioxidant, a phosphite costabilizer and an acid scavenger.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: July 7, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Douglas W. Horsey, Ambelal R. Patel
  • Patent number: 5104921
    Abstract: A cured composition possessing excellent cohesive strength at high temperatures along with excellent adhesion, shear strength and solvent resistance is prepared by the high energy ionizing radiation initiated curing of a polymer composition comprising an alkenyl arene/conjugated diene block copolymer and a oligomer such that the unsaturation index of the composition is minimized. The radiation initiated curing of the adhesive composition is accomplished without requiring the aid of a coupling agent to promote crosslinking of the block copolymer during exposure to the radiation.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: April 14, 1992
    Assignee: Shell Oil Company
    Inventors: James R. Erickson, Earle E. Ewins, Jr.
  • Patent number: 5091454
    Abstract: An adhesive composition comprising a polymer, a tackifier, a wax and a plasticizing amount in the range of 5-40% by weight of 1,4-cyclohexane dimethanol dibenzoate.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: February 25, 1992
    Assignee: Velsicol Chemical Corporation
    Inventor: William D. Arendt
  • Patent number: 5073457
    Abstract: Repositionable adhesives which display surprising latent permanent adhesive properties are described herein. These adhesives are comprised of acrylic pressure sensitive resins. These pressure-sensitive adhesive resins can be either solvent based or water based. In the case of a solvent-based adhesive system, paraffin wax is used, while in the water-based systems, latex emulsions of polyethylene are preferred.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: December 17, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Elmer Blackwell
  • Patent number: 5063271
    Abstract: Hot melt wax compositions and a process for producing said hot melt wax compositions are disclosed. The wax compositions are suitable for coating fibrous materials, for example, paper and corrugated paper boards. The coating compositions comprise a mixture of a fully refined paraffin wax, a petroleum wax selected from the group consisting of a recrystallized heavy intermediate wax, a microcrystalline wax and mixtures thereof, a polymeric hydrocarbon compound, a tackifier resin and optionally, a phenolic anti-oxidant.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: November 5, 1991
    Assignee: Conoco Inc.
    Inventor: Richard L. Jones
  • Patent number: 5041484
    Abstract: Flame retardant hot melt adhesives include atactic polypropylene having grafted thereon a ring-halogenated styrene. The compositions may also include homopolymers of the styrene monomer or equivalents, as well as non-halogenated atactic polypropylene. Tackifying agents, waxes, anti-oxidants and other additives may also be included.
    Type: Grant
    Filed: June 20, 1990
    Date of Patent: August 20, 1991
    Assignee: Great Lakes Chemical Corporation
    Inventors: Ray W. Atwell, Donna L. Collison, Nicolai A. Favstritsky, Enrico J. Termine
  • Patent number: 5036129
    Abstract: Flame retardant hot melt adhesives include ethylene vinyl acetate having grafted thereon a ring-halogenated styrene. The compositions may also include homopolymers of the styrene monomer of equivalents, as well as non-halogenated ethylene vinyl acetate. Tackifying agents, waxes, anti-oxidants and other additives may also be included.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: July 30, 1991
    Assignee: Great Lakes Chemical Corporation
    Inventors: Ray W. Atwell, Nicolai A. Favstritsky, John P. Stallings, Enrico J. Termine
  • Patent number: 5026752
    Abstract: A hot melt adhesive consisting essentially of amorphous polypropylene, styrene-based themoplastic elastomer, tackifier and wax having a dissipation factor of about 0.010 or less at 1 kilohertz at 23.degree. C., and a volume resistivity of at least about 1.times.10.sup.14 ohm-cm at 23.degree. C. Such adhesives exhibit good shear strength and shock resistance.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: June 25, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Toshinori Wakabayashi, Shinji Sugii
  • Patent number: 5021257
    Abstract: The present invention is directed to a hot-melt adhesive containing at least one propylene/1-hexane copolymer. The adhesive contains an amount of a low viscosity, substantially crystalline wax, having a melting point of about 90.degree. C. to about 125.degree. C., sufficient to improve the elastic delamination resistance of the adhesive. The adhesive are particularly useful in disposable diaper construction.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: June 4, 1991
    Assignee: Eastman Kodak Company
    Inventors: Bruce W. Foster, Clyde N. Clubb, Richard K. Stuart, Jr.
  • Patent number: 5017659
    Abstract: This invention relates to a polymer composition comprising per 100 parts by weight of the composition(a) 30-60 parts by weight of copolymer of ethylene and 1-olefin having at least 6 C atoms,(b) 35-65 parts by weight of copolymer of ethylene and vinyl acetate,(c) 1-10 parts by weight of ethylene-propylene-diene rubber,said polymer composition being obtained by reaction at elevated temperature of the components.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: May 21, 1991
    Inventor: L. A. van der Groep
  • Patent number: 5006583
    Abstract: Irregular shaped particles of cross-linked copolymer of styrene-divinylbenzene in which essentially 90% or more of the particles pass through a 100 mesh screen (U.S. Sieve Series) and essentially 50% pass through a 200 mesh screen (U.S. Sieve Series) is produced by high speed attrition milling of relatively inexpensive large-sized copolymer beads. The resulting particles are irregularly shaped cross-linked copolymer particles which are desirable and useful as a filler material for investment casting waxes. The small-sized irregularly-shaped cross-linked copolymer beads produced by high speed attrition milling essentially eliminate any "orange peel" effect on wax pattern surface and also results in improved packing of the wax composition thereby producing high quality precision parts more readily than heretofore possible.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: April 9, 1991
    Assignee: M. Argueso & Co., Inc.
    Inventor: Peter G. Argueso
  • Patent number: 5001179
    Abstract: Recyclable hot melt adhesive compositions suitable for plastic bonding may be prepared from styrene-ethylene-butylene-styrene tri-block and/or styrene-ethylene-butylene di-block copolymers which are tackified with at least one hydrogenated resin based on alpha-methyl styrene, vinyl toluene, styrene, coumarone-indene, dicyclopentadiene or mixtures thereof, optionally containing small amounts of white mineral oil or similar diluent. In addition, the adhesive may or may not include minor amounts of the above-described pure monomer resins (specifically composed of styrene, alpha methyl styrene or vinyl toluene or mixtures thereof) in their non-hydrogenated form to serve as end block reinforcing resins.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: March 19, 1991
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Thomas F. Kauffman, Paul P. Puletti
  • Patent number: 4994516
    Abstract: Hot melt adhesives comprising ethylene/vinyl acetate copolymer, wax, and a resin containing 5 to 80 wt. % of units derived from olefinically unsaturated aromatic compounds, 5 to 80 wt. % of units derived from C.sub.5 or C.sub.6 olefines or diolefines or a mixture thereof, and from 7 to 45% of units derived from a terpene. The hot melt adhesive composition has improved color and compatibility over ethylene/vinyl acetate copolymer and wax blends containing resins of significant portions of cyclopentadiene or dicyclopentadiene. The hot melt adhesive of the invention also show improved adhesive properties on substrate such as glass and aluminum.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: February 19, 1991
    Assignee: Exxon Research & Engineering Company
    Inventor: Quoc Luvinh
  • Patent number: 4992502
    Abstract: Solid correction compositions useful in the form of a stick for correcting markings. The compositions include an opacifying pigment dispersed in a solid mixture of selected first and second waxes and a compatible film forming polymeric hardening material. The stick is rubbed over the marking to be corrected to deposit an adherent film which obscures the marking and can receive and retain a corrected marking.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: February 12, 1991
    Assignee: The Gillette Company
    Inventors: Rachel M. Loftin, John Thompson
  • Patent number: 4965306
    Abstract: Hot melt wax compositions and a process for producing said hot melt wax compositions are disclosed. The wax compositions are suitable for coating fibrous materials, for example, paper and corrugated paper boards. The coating compositions comprise a mixture of a fully refined paraffin wax, a petroleum wax selected from the group consisting of a recrystallized heavy intermediate wax, a microcrystalline wax and mixtures thereof, a polymeric hydrocarbon compound, a tackifier resin and optionally, a phenolic anti-oxidant.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: October 23, 1990
    Assignee: Conoco Inc.
    Inventor: Richard L. Jones
  • Patent number: 4957949
    Abstract: Disclosed is a thermochromic color masterbatch for use in a thermoplastic resin comprising a wax having substantially homogeneously dispersed therein a thermochromic granular material which is coated with a hydrophilic high-molecular weight substance, said thermochromic granular material being a mixture of a thermochromic composition comprising an electron-donating chromogen, an electron acceptor and a solvent with a thermosetting resin.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: September 18, 1990
    Assignee: Matsui Shikiso Chemical Co., Ltd.
    Inventors: Masayasu Kamada, Toshihisa Maeda, Tadashi Kobayashi, Goro Shimizu
  • Patent number: 4957960
    Abstract: An encapsulating composition for electronic devices comprises a curable material such as a silicone resin and an ion scavenger compound selected from certain calixarene or oxacalixarene compounds in which at least half of the phenolic groups have been substituted by specific groups and certain silacrown compounds. Exemplary ion scavenger compounds include ##STR1## the tetraethyl acetate of 7, 13, 19, 25-tetra-tertbutyl-27, 28, 29, 30-tetrahydroxy-2,3-dihomo-3-oxacalix-4-arene and 1,1-dimethasila-17-crown-6.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: September 18, 1990
    Assignee: Loctite (Ireland) Ltd.
    Inventors: Stephen J. Harris, John G. Woods, John M. Rooney, Marueen G. MacManus, John Guthrie
  • Patent number: 4952625
    Abstract: A process for producing a thermoplastic ultrahigh-molecular-weight polyethylene composition having excellent moldability, which comprises mixing at room temperature to 100.degree. C. an ultrahigh-molecular-weight polyethylene having an average molecular weight of at least 2,000,000 with an amount, effective for acting as a solvent to said polyethylene and improving the flowability of the polyethylene, of a flowability improver selected from the group consisting of (a) styrene, (b) alpha-methylstyrene, (c) chlorinated styrene and (d) a mixture of (a) and (b), wherein the amount of the flowability improver is 3 to 30 parts by weight for styrene and 3 to 30 parts by weight for alpha-methylstyrene and styrene, per 100 parts by weight of the ultrahigh-molecular-weight polyethylene, and optionally admixing at least one member of the group consisting of a pigment, carbon black, a stabilizer, a lubricant and an inorganic filler.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: August 28, 1990
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoo Shiohara, Hiroshi Abe
  • Patent number: 4942193
    Abstract: A formable, weldable, temporary protective coating for use on metals, said coating comprising a base-neutralized acid or base-functional copolymer which contains wax.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: July 17, 1990
    Assignee: PPG Industries, Inc.
    Inventors: Ellor J. Van Buskirk, Rudolf Maska
  • Patent number: 4939036
    Abstract: Lamination of a tufted, primary carpet backing to a secondary backing is conducted using a composite hot melt adhesive in sheet form. The composite adhesive overcomes the unfavorable temperature-viscosity gradient within the carpet structure during the lamination process, yielding tufted pile carpets with good tuft encapsulation, tuft bind strength and delamination strength. Also disclosed are hot melt adhesive compositions suitable for use in sheet form in such a process.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: July 3, 1990
    Assignee: Amoco Corporation
    Inventor: Robert A. Reith
  • Patent number: 4937146
    Abstract: A water curable resin-coated sheet useful as an orthopedic cast having a non-polar hydrophobic lubricant admixed with a resin prepolymer in the coating in order to provide low surface tack. A method of preparation involves mixing the lubricant and resin prepolymer briefly to form an unstable mixture and immediately applying the mixture to a substrate sheet of fiberglass or the like, the lubricant being present in an amount in excess of that which is miscible with the resin prepolymer.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: June 26, 1990
    Assignee: Kirschner Medical Corporation
    Inventors: Ronald M. Dull, Lawrence B. Smith, Harold E. Garey
  • Patent number: 4937138
    Abstract: A hot melt adhesive, a laminar structure, and non-woven article fabricated from a blend comprising:from about 50 percent by weight to about 5 percent by weight of a butene-1 homopolymer or copolymer;from about 50 percent by weight to about 95 percent by weight of a tackifying resin;from a 0.01 to about 1 phr of a nucleating agent;up to about 1 part per hundred (phr) of a stabilizer;up to about 30 phr of a plasticizer; andup to about 30 phr of a wax.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: June 26, 1990
    Assignee: Shell Oil Company
    Inventor: Simon Mostert
  • Patent number: 4933107
    Abstract: An easily peelable semiconductive resin composition comprising 100 parts by weight of ethylene-vinyl acetate copolymer-based component, 1 to 20 parts by weight of waxy aliphatic hydrocarbon, and 50 parts by weight or more of furnace carbon black having an arithmetic means particle size of 25 to 40 m.mu., iodine adsorption of 4 to 60 mg/g, and DBP oil absorption (by JIS A method) of 120 to 150 ml/100 g.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: June 12, 1990
    Assignee: Hitachi Cable Ltd.
    Inventors: Kiyoshi Watanabe, Takanori Yamazaki, Hideki Yagyu
  • Patent number: 4908399
    Abstract: An encapsulating composition for electronic devices comprises a curable material such as an epoxy resin and an ion scavenger compound selected from certain calixarene or oxycalixarene compounds in which at least half of the phenolic groups have been substituted by specific groups and certain silacrown compounds. Exemplary ion scavenger compounds include ##STR1## the tetraethyl acetate of 7, 13, 19, 25-tetra-tertbutyl-27, 28, 29, 30-tetrahydroxy-2,3-dihomo-3-oxacalix-4-arene and 1,1-dimethasila-17-crown-6.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: March 13, 1990
    Assignee: Loctite (Ireland) Ltd.
    Inventors: Stephen J. Harris, Maureen G. MacManus, John Guthrie
  • Patent number: 4898902
    Abstract: A binder composition for injection molding of at least one of metal powder and ceramic powder which comprises polyoxyethylene/polyoxypropylene condensation polyether as the main component together with from 10 to 100 parts by weight of at least one auxiliary component selected from the group consisting of natural waxes, synthetic waxes, fatty acids and esters per 100 parts of said polyoxyethyene/polyoxypropylene condensation polyether.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: February 6, 1990
    Assignees: Adeka Fine Chemical Co., Ltd., Asahi Denka Kogyo Kabushiki Kaisha
    Inventors: Tomoaki Nagai, Hideyuki Yamanashi, Hideo Hachimori
  • Patent number: 4897291
    Abstract: A sealant composition is provided to seal wood products against moisture absorption and the swelling caused thereby. The sealant composition is especially adapted to be applied to the cut ends of dimensioned lumber and particularly to the edges of wood products such as plywood, waferboard, oriented strand board and particle board. The composition includes a water-based polymeric binder, a wax hydrophobic filler and a water-soluble alkali metal siliconate salt. The polymeric binder preferably has two components. The first is a soft, stretchy polymer with a low glass transition temperature which allows the binder to stretch when the wood swells due to moisture absorption. The second is a polymer with a high glass transition temperature which enhances binding properties.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: January 30, 1990
    Assignee: Georgia-Pacific Resins, Inc.
    Inventor: Moon Kim
  • Patent number: 4892903
    Abstract: An elastic fiber or film prepared from a composition comprising at least one block copolymer containing at least two polymeric blocks containing predominantly monoalkenyl aromatic hydrocarbon monomer units having a weight-average molecular weight within the range from about 4,000 to about 50,000 and at least one polymeric block containing predominantly hydrogenated conjugated diolefin monomer units having a weight-average molecular weight within the range from about 10,000 to about 200,000, a relatively low molecular weight polymer selected from the Group consisting of anionic styrene homopolymers, .alpha.-methylstyrene homopolymers, hydrogenated styrene, copolymers of .alpha.-methylstyrene and styrene and mixtures thereof and may contain a wax. In particularly preferred embodiments, the elastic fiber or film will contain at least one A-B-A triblock copolymer and an A-B' diblock copolymer.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: January 9, 1990
    Assignee: Shell Oil Company
    Inventor: Glenn R. Himes
  • Patent number: 4891400
    Abstract: An addition or condensation cross-linking molding or lining compound based on silicones comprising(a) an organo polysiloxane containing reactive end groups,(b) a catalyst,(c) a filler, and(d) an isoparaffin having 8 to 24 carbon atoms.The compounds being particularly useful as dental molding compositions.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: January 2, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Schwabe, Reiner Voigt, Ottfried Schlak
  • Patent number: 4886853
    Abstract: The present invention is directed to a hot-melt adhesive containing at least one propylene/1-hexene copolymer. The adhesive contains an amount of a low viscosity, substantially crystalline wax, having a melting point of about 90.degree. C. to about 125.degree. C., sufficient to improve the elastic delamination resistance of the adhesive. The adhesives are particularly useful in disposible diaper construction.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: December 12, 1989
    Assignee: Eastman Kodak Company
    Inventors: Bruce W. Foster, Clyde N. Clubb, Richard K. Stuart, Jr.
  • Patent number: 4883852
    Abstract: An antifouling coating is described, that contains as its essential components a polymer of one or more of the monomers A represented by formula (1) and/or a copolymer composed of one or more of the monomers A and one or more monomers B that are radical-copolymerizable with said monomer A: ##STR1## wherein X is a hydrogen atom or a methyl group; n is an integer of 2 to 4; and m signifies the average degree of polymerization and ranges from 0 to 70.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: November 28, 1989
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Shigeru Masuoka, Hiroshi Doi
  • Patent number: 4870128
    Abstract: A hot melt gasket for a closure having improved cracking and cut-through resistant properties comprising one or more copolymers of ethylene and an olefinic carboxylic acid. Preferably, a hot melt gasket comprised of one or more ethylene-acrylic acid and/or ethylene-methacrylic acid copolymers. The hot melt gasket is particularly useful in closures which are subjected to elevated temperatures and/or excessive headloads, such as warehoused products and pasteurized food stuffs.
    Type: Grant
    Filed: March 18, 1989
    Date of Patent: September 26, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marysusan Couturier, Donna Trainor
  • Patent number: 4870122
    Abstract: High density polyethylene (HDPE) films, preferably containing blends of HDPE resins or microcrystalline wax, are oriented up to about two times in the machine direction and six times or more in the transverse direction to give films having good dead-fold and water vapor transmission characteristics making them highly suited for packaging, particularly for dry foods when coated with or coextruded with a heat sealable layer, e.g. Surlyn.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: September 26, 1989
    Assignee: Mobil Oil Corporation
    Inventor: Pang-Chia Lu
  • Patent number: 4857594
    Abstract: A melt adhesive composition containing an amorphous polypropylene, a selectively hydrogenated monoalkenyl arene/conjugated diene block copolymer and a tackifier.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: August 15, 1989
    Assignee: Baychem International, Inc.
    Inventors: Pallavoor R. Lakshmanan, Son T. Nguyen
  • Patent number: 4857578
    Abstract: A water repellent coating for wood substrates is presented. The coating comprises a highly dispersed mixture of polytetrafluoroethylene, alkyd resin and microcrystalline wax. Dispersion of the polytetrafluoroethylene and microcrystalline wax as discrete particles prevents delamination of successive coats while providing intercoat adhesion. Also presented is a process for the preparation of water repellent wood coatings that prohibits microcrystalline wax breakdown.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: August 15, 1989
    Assignee: Rust-Oleum Corporation
    Inventor: Robert M. Hall
  • Patent number: 4855098
    Abstract: A candle composition consisting essentially of about 10 to 90 volume percent of a first paraffin wax with a melting point of 120.degree. to 125.degree. F. and having a maximum of 2 percent oil, about 10 to 90 volume percent of the second paraffin wax with a melting point of 125.degree. to 130.degree. F. and having a maximum of 0.2 percent oil, and about 0.1 volume percent of stretchability enhancer and a method of forming a candle therefrom. A method of forming a candle comprising submerging a plurality of wax pieces consisting essentially of about 10 to 90 volume % paraffin wax with a melting point of 120.degree. F. and having a maximum of 2.0% oil, about 10 to 90 volume % paraffin wax with a melting point of 125.degree. to 130.degree. F. and having a maximum of 0.2% oil and about 0.1 to 1.0 volume % of a stretchability enhancer in water having a temperature between about 100.degree. and 120.degree. F.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: August 8, 1989
    Inventor: Ted Taylor
  • Patent number: 4835208
    Abstract: The present invention provides a process for applying a thermoplastic composition as a series of discrete droplets from a non-contact ink jet printing apparatus to form separate drops on a substrate moving relative to the apparatus, characterized in that the molten composition is thermally stable at the temperature of application and is applied at a temperature in excess of 100.degree. C.The invention can be used to apply the molten composition to a variety of substrates using on-demand or continuous non-contact ink jet application techniques. However, the invention is of especial use in the application of thermoplastic inks to non-porous substrates using an on-demand ink jet printer.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: May 30, 1989
    Assignee: Willett International Limited
    Inventor: Jeffrey M. Ball
  • Patent number: 4833192
    Abstract: Compatible polymer blends useful as melt adhesives comprising a copolymer of butene-1 and from about 5.5 to about 20 weight percent of ethylene or propylene, a hydrocarbon tackifier and a low molecular weight liquid polybutene having a molecular weight greater than about 2000.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: May 23, 1989
    Assignee: Baychem International, Inc.
    Inventors: Pallavoor R. Lakshmanan, Paula J. Carrier
  • Patent number: 4826909
    Abstract: Compatible polymer blends useful as melt adhesives comprising a copolymer of butene-1 and from about 5.5 to about 20 weight percent of ethylene or propylene, a hydrocarbon tackifier and an amorphous polypropylene.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: May 2, 1989
    Assignee: Baychem International, Inc.
    Inventors: Pallavoor R. Lakshmanan, Paula J. Carrier
  • Patent number: 4824889
    Abstract: A hot melt adhesive comprising a blend of:from about 10% by weight to about 90% by weight of a blend of from 10% by weight to 90% by weight of an at least partially crystalline copolymer of butene-1 and ethylene, wherein the ethylene content is from about 1 mole percent to about 20 mole percent of said copolymer, and from 10% by weight to 90% by weight of a butene-1 homopolymer;from about 10% by weight to about 90% by weight of a tackifying resin; andfrom about 0.1 phr to about 0.5 phr of an antioxidizing agent.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: April 25, 1989
    Assignee: Shell Oil Company
    Inventor: Simon Mostert
  • Patent number: 4772650
    Abstract: Tamper-resistant inner seals that bond firmly to the lips of lidded and capped glass and plastic containers. The innerseals incorporate a metallic foil having a heat-sealable adhesive applied to one surface thereof. The heat-sealable adhesive comprises a paraffin wax or blend of paraffin wax and microcrystalline wax, polystyrene or derivative thereof, rosin or derivative thereof, and at least one high molecular weight polymeric material selected from the group consisting of ethylene/acrylic acid copolymers, ethylene/vinyl acetate copolymers, ethylene/methacrylate copolymers, and ethylene/vinyl acetate/methacrylic acid terpolymers, and blends thereof.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: September 20, 1988
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventor: David T. Ou-Yang