Patents Examined by Carman J. Seccuro
  • Polyproplene-high trans 1,4-polybutadiene blends
    Patent number: 5229462
    Abstract: The present invention relates to a blend of polypropylene and a trans-1,4-polybutadiene rubber in which the content of trans-1,4 bonds is 65 weight percent or more.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: July 20, 1993
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Richard G. Bauer
  • Poly(1-butene)resin composition
    Patent number: 5221715
    Abstract: The composition of this invention is a poly(1-butene) resin composition which has characteristics such as excellent rigidity, creep characteristic and impact resistance, which a poly(1-butene) resin inherently possess, and is excellent in moldability, particularly moldability in high molding speed, so-called high speed moldability. This composition is particularly useful in the manufacture of hot water pipes.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: June 22, 1993
    Assignee: Shell Oil Company
    Inventors: Fukashi Kagawa, Haruhiko Tanaka
  • Reversible polymer gels based on fluoroelastomers
    Patent number: 5219661
    Abstract: Reversible polymer gels comprising:(a) 55-98% by weight based on the total polymers contained in the gel, of an elastomeric copolymer of vinylidene fluoride comprising, in moles, 55-85% of vinylidene fluoride, 15-45% of hexafluoropropene and 0-30% of tetrafluoroethylene;(b) 2-45% based on the total polymers contained in the gel, of a non-elastomeric polymer selected from non-elastomeric VDF-based polymers, or polyvinylfluoride, or acrylic resins, for example polyalkylmethacrylates and copolymers of alkylmethacrylates with alkylacrylates, having T.sub.g >50.degree. C.Said polymer gels can be used as protective and consolidating agents for stone materials, for preparing insulating and impermeable films and for impregnating fiber textiles.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: June 15, 1993
    Assignee: Ausimont S.p.A.
    Inventors: Liberato Mascia, Giovanni Moggi
  • Polymer blends of propylene copolymers and polyethylene
    Patent number: 5218047
    Abstract: Polymer blends containa) from 20 to 70% by weight of a propylene copolymer which in turn consists of from 20 to 65% by weight of a propylene homopolymer and 30 to 85% by weight of a random propylene copolymer containing polymerized C.sub.2 -C.sub.10 -alk-1-enes andb) from 30 to 80% by weight of a polyethylene having a density of from 0.94 to 0.98 g/cm.sup.3 and a melt flow index of less than 15 g/10 min at 190.degree. C. under a weight of 2.16 kg.The novel polymer blends possess, inter alia, high rigidity, high impact strength and little tendency to undergo white fracture and are particularly suitable for the production of films and moldings.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: June 8, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Harald Schwager, Klaus-Dieter Ruempler, Hans-Georg Braun
  • Thermoplastic compositions, process for preparing them and their application in the production of industrial articles
    Patent number: 5218046
    Abstract: The compositions contain a) less than 90% and at least 2% by weight of at least one ethylene polymer (A), and optionally, at least one .alpha.-olefin having from 3 to 12 carbon atoms, said polymer containing at least 70% in moles of patterns derived from ethylene, and b) more than 10% and up to 98% by weight of at least one polymer (B) containing at least 85% in moles of patterns derived from at least one .alpha.-olefin having from 3 to 12 carbon atoms and at the most 15% in moles of patterns derived from ethylene, and are characterized in that the polymer (A) is a modified polymer of which the measured limit viscosity is comprised between 1.3 and 100 times its limit viscosity calculated from the distribution of molecular masses. The compositions are obtained by a process consisting in providing a polymer of ethylene and, optionally, of at least one .alpha.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: June 8, 1993
    Assignee: Norsolor
    Inventors: Joel Audureau, Vincent Crenna
  • Tread compounds containing modified EPDM which exhibit good abrasion resistance and improved hysteresis properties
    Patent number: 5216066
    Abstract: A tire tread composition comprises a tread rubber compound containing a sulfonamide modified EPDM terpolymer which imparts improved abrasion resistance, improved ozone resistance, improved hysteresis and the like.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: June 1, 1993
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Paul H. Sandstrom, Leland E. Beyersdorff, Roger J. Hopper
  • Polyolefin lubricant systems and polymer composites containing such lubricants
    Patent number: 5216079
    Abstract: Lubricant systems are provided in which a polyolefin or polyolefin/polytetrafluoroethylene blend functions as a lubricant in a polymer matrix material. The resulting polymer composites containing about 1 to 30 weight percent of the novel lubricant or lubricant blend have greatly improved friction and wear properties, including lower coefficients of friction and increased surface wear resistence. The polyolefin does not remain as discrete, identifiable particles after mixing with the polymer matrix, and has an average molecular weight of less than 500,000.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: June 1, 1993
    Assignee: Kawasaki LNP Inc.
    Inventors: Jane M. Crosby, John E. Theberge
  • Fluororesin coating composition
    Patent number: 5216067
    Abstract: A fluororesin coating composition comprising a liquid medium having dispersed therein (A) fluororesin particles having an average particle diameter of 5 .mu.m or more and (B) fluororesin particles having an average particle diameter of 1 .mu.m or less. In the coating composition, the proportion of the fluororesin particles (B) based on the total amount of the fluororesin particles (A) and (B) being from 20 to 80% by weight. The fluororesin coating composition is excellent in both film-forming properties and stability.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: June 1, 1993
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Katsuya Yamada, Masaya Nishi, Yoshichika Nishimura
  • Solid golf ball
    Patent number: 5215308
    Abstract: Disclosed is a solid golf ball containing at least one rubber portion formed from a rubber composition comprising a base rubber, a co-crosslinking agent and an organic peroxide; an improvement being present in that the base rubber is a mixture of(A) a solid polybutadiene rubber containing cis-1,4 bonds in an amount of at least 40%, and(B) either a liquid polybutadiene rubber or a liquid isoprene-butadiene copolymer rubber, or both.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: June 1, 1993
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hidenori Hiraoka, Akihiko Hamada
  • Fluororubber composition
    Patent number: 5214097
    Abstract: A fluororubber composition comprising 100 parts by weight of a rubber mixture which comprises 5 to 70% by weight of at least one rubber selected from the group consisting of diene rubbers and polyolefin rubbers and 95 to 30 by weight of a fluororubber and 1 to 20 parts by weight of a block copolymer which comprises a vinyl monomer and a fluorovinyl monomer, which has good compatibility between the rubber components and gives a cured material having improved chemical resistance, heat resistance, oil resistance, and the like.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: May 25, 1993
    Assignee: Daikin Industries Ltd.
    Inventors: Masayasu Tomoda, Shigeru Morita, Etsuo Minamino, Eisuke Yamada, Hiroshi Okamoto, Shinji Inagaki, Junji Furukawa
  • Cured fluoroelastomer compositions
    Patent number: 5214106
    Abstract: Fluoroelastomer compositions with terminal iodo groups and having improved low temperature properties in the cured state.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: May 25, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dana P. Carlson, Akira Nagasawa
  • Olefin polymer films
    Patent number: 5212246
    Abstract: Disclosed are films or sheets comprising an olefin polymer composition which is comprised of(a) from about 10 to 50 parts of a propylene homopolymer having an isotactic index greater than 80, or a copolymer of propylene with ethylene and/or an another alpha-olefin, containing over 80% propylene and having an isotactic index greater than 80;(b) from about 5 to 20 parts of a semi-crystalline copolymer fraction, which copolymer is insoluble in xylene at room or ambient temperature; and(c) from about 40 to 80 parts of a copolymer fraction of ethylene with propylene and/or another alpha-olefin, and optionally with minor amounts of a diene, said copolymer fraction containing less than 40% ethylene and/or other alpha-olefin, being soluble in xylene at room temperature, and having an intrinsic viscosity from 1.5 to 4 dl/g.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: May 18, 1993
    Assignee: Himont Incorporated
    Inventor: Kumar Ogale
  • Polypropylene resin compositions of high syndiotacticity and preparation process thereof
    Patent number: 5212247
    Abstract: Disclosed herein is a polypropylene resin composition of a high syndiotacticity comprising a substantial homopolymer of propylene, in which the ratio of the intensity of the peak attributable to the syndiotactic pentad bonds to the sum of the intensities of all the peaks attributable to the methyl groups in the spectrum of the methyl groups measured by .sup.13 C-NMR is 0.7 or more, and a copolymer of ethylene and propylene, and a preparation process thereof.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: May 18, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tadashi Asanuma, Tetsunosuke Shiomura, Nobutaka Uchikawa, Tutomu Iwatani, Katsumi Takeuchi
  • Multi-layer transparent polyolefin film for application in shrink labelling
    Patent number: 5212009
    Abstract: Described is a transparent shrinkable film comprising a base layer prepared from propylene-containing polymers and a hydrocarbon resin. The base layer contains about 5% to 40% by weight of a propylene homopolymer, 0% to about 30% by weight of a hydrogenated hydrocarbon resin having a softening point in the range from about 80.degree. to 125.degree. C., and about 30% to 95% by weight of a random ethylene-propylene copolymer, the percentages being related to the total weight of the mixture. A top layer is arranged on either side of the base layer. The invention also describes a process for the manufacture of the film.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: May 18, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Herbert Peiffer, Gunter Schloegi, Lothar Bothe
  • Thermoplastic resin compositions
    Patent number: 5212227
    Abstract: There is provided a thermoplastic resin composition which comprises 99 to 1% by weight of a propylene polymer (I), 1 to 99% by weight of a vinyl polymer (II), 0.1 to 100 parts by weight, based on 100 parts by weight of the aforesaid resins (I)+(II), of a multi-phase structure thermoplastic resin (III) which is a graft copolymer comprising 5 to 95% by weight of a propylene polymer and 95 to 5% by weight of a vinyl polymer or copolymer obtained from at least one kind of vinyl monomer, either of the components being formed with a dispersion phase having a particle diameter of 0.001 to 10 .mu.m.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: May 18, 1993
    Assignees: Nippon Petrochemicals Co., Ltd., Nippon Oil & Fat Co., Ltd.
    Inventors: Suehiro Sakazume, Yuichi Orikasa
  • Films of radiation resistant heat sealable polymer blends having a surface adhesion layer grafted thereto
    Patent number: 5209984
    Abstract: Polymer blends of non-crystalline mesomorphous polypropylene and a polymer compatible with such polypropylene and the method of making such polymer blends are provided. Such compatible polymer blends exhibit substantial maintenance of structural integrity after exposure to gamma irradiation and provide heat sealing properties, puncture resistance, and tear strength. Films, fibers, and other articles made from such blends may be used in various applications, including medical articles such as medical packaging films, ostomy pouches, and transdermal delivery patches, which may require sterilized storage prior to usage.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: May 11, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard J. Rolando, Dennis L. Krueger
  • Reduction of melt fracture in linear polyethylene
    Patent number: 5210142
    Abstract: Polymer blends of at least one ethylene interpolymer product and at least one linear polyethylene are disclosed. The blends have a shear rate at the point of onset of melt fracture at least about 2 percent higher than that obtained for the linear polyethylene alone. The polymer blends are particularly useful for forming films and tapes wherein the melt fracture of the polymer blend is substantially reduced or eliminated, thereby improving extrudability and fabricated article appearance.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: May 11, 1993
    Assignee: The Dow Chemical Company
    Inventors: Lawrence T. Kale, Lionel H. Dagenais, Shih-Yaw Lai, William R. Van Volkenburgh, John O. Bieser
  • Pressureless tennis ball
    Patent number: 5209471
    Abstract: A pressureless tennis ball which has excellent rebound properties and produces a satisfactory feeling of striking retained over a long period of time, the tennis ball having a hollow spherical core made from a rubber composition containing a rubber and 5 to 60 parts by weight of polyethylene per 100 parts by weight of the rubber.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: May 11, 1993
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Kuniyasu Horiuchi, Yoshinobu Nakamura
  • Thermoplastic olefin alloys and method for producing the same
    Patent number: 5210139
    Abstract: A thermoplastic olefin comprising an alloy of an olefin copolymer elastomer and a propylene/comonomer random copolymer is provided. The comonomer is selected from one or more of ethylene and C.sub.4 to C.sub.10 alpha-olefins. Polypropylene is an optional component of the alloy. The alloy may be produced by melt blending, reactor blending or a combination thereof, of the various components.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: May 11, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Terrence Huff, James J. McAlpin
  • Adhesives for laminating vinyl to various substrates
    Patent number: 5209983
    Abstract: Adhesives suitable for preparing laminates of polyvinyl chloride or polyvinyl chloride copolymers with wood or metal are prepared from a three component polymer mixture of polyvinyl chloride or its copolymers itself, a direct ethylene copolymer preferably containing units derived from carbon monoxide, and another direct ethylene copolymer containing units derived from a monomer containing glycidyl units. The adhesive is especially useful for preparing PVC/wood laminates which are subject to outdoor weathering.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ronald B. Case, Robert J. Statz