Patents Examined by Helen F. Lee
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Patent number: 5480711Abstract: The invention provides for a nano-porous highly amorphous polytetrafluoroethylene biomaterial which is soft, flexible, permeable to various biomolecules and gases, and high in strength in one or more directions. The invention can be made into many desired shapes as product needs dictate and multidirectional strength can be attained by layering the invention.Type: GrantFiled: July 12, 1994Date of Patent: January 2, 1996Inventor: Bruce G. Ruefer
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Patent number: 5475078Abstract: A novel fluorinated organosilicon compound, exhibiting excellent solvent resistance, chemical resistance and mold release, which is represented by general formula (1): ##STR1## wherein Rf is a divalent group represented by general formula (2): ##STR2## wherein Y is a fluorine atom or CF.sub.3 group; l is an integer of 0-8; k and m are integers of 0-4; j and n are integers of 0 or 1; except when j=k=l=m=n=0.Type: GrantFiled: May 20, 1993Date of Patent: December 12, 1995Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shinichi Sato, Takashi Matsuda, Kouji Takano, Toshio Takago
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Patent number: 5470901Abstract: A polyphenylene sulfide resin composition comprising 100 parts by weight of a polyphenylene sulfide resin and 0.5 to 50 parts by weight of a crosslinked fluorine-containing elastomer, which has improved impact resistance while keeping excellent properties of the polyphenylene sulfide resin.Type: GrantFiled: January 23, 1995Date of Patent: November 28, 1995Assignee: Daikin Industries, Ltd.Inventors: Kazuo Ishiwari, Yoshihisa Yamamoto, Tetsuo Shimizu
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Patent number: 5468526Abstract: An oxygen and moisture impermeable multilayer barrier film is provided including a barrier layer comprising a homopolymer of vinylidene chloride or a copolymer of vinylidene chloride and vinyl chloride or methyl methacrylate. The barrier layer may be coated onto or coextruded with a water soluble film layer comprising a blend of a water soluble polymer such as polyvinyl alcohol, polycaprolactone, or polyethyloxozaline and a thermoplastic polyurethane. The multilayer film may be used for reusable or disposable ostomy bags and for heat sealable bags used in packaging agricultural chemicals, detergents, and other household chemicals.Type: GrantFiled: September 20, 1993Date of Patent: November 21, 1995Assignee: The Dow Chemical CompanyInventors: Scott I. Allen, Duane F. Foye, Michael Ferguson
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Patent number: 5466768Abstract: An ultraviolet light absorbing silicone composition is disclosed which comprises silicone base polymer and ultraviolet light absorbing component present as, or derived from, one or more silicon-containing ultraviolet light absorbing benzotriazole derivatives. Also disclosed are methods for producing such silicone compositions and derivatives. Such silicone compositions, which are preferably optically clear, are useful as lens materials.Type: GrantFiled: May 6, 1994Date of Patent: November 14, 1995Assignee: Allergan, Inc.Inventor: Shih-Liang S. Yang
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Patent number: 5464931Abstract: A process for preparing an organic disulfide polymer such as polyethylene disulfide which is used in batteries comprises contacting a dimercaptan such as 1,2-ethanedithiol with elemental sulfur using a mixture of a basic compound such as NaOH and an ethoxylated alcohol such as Union Carbide's TERGITOL.RTM. 15-S-7 as catalyst wherein the dimercaptan is present in excess amount to effect the preparation of the disulfide polymer.Type: GrantFiled: August 15, 1994Date of Patent: November 7, 1995Assignee: Phillips Petroleum CompanyInventors: James E. Shaw, William E. Sattich, Howard F. Efner
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Patent number: 5455309Abstract: Methods of producing thermoplastic poly(amide-urethane) block copolymers having excellent flexibility at low temperatures are provided. The methods comprise reacting substantially linear polyamides, the polyamides being based on dimerized fatty acids and terminated by carboxyl and/or amino groups and aliphatic or cycloaliphatic polyethers and/or reaction products thereof with 2,3-epoxypropanol. The reaction products contain substantially no free isocyanate groups or epoxide groups. The invention also relates to the use of these products as adhesives and corrosion inhibitors for metallic and/or wooden materials.Type: GrantFiled: August 3, 1990Date of Patent: October 3, 1995Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Italo Albini, Werner Gruber, Norbert Wiemers, Juergen Wichelhaus, Roberto Leoni, Angela Rossini
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Patent number: 5451438Abstract: An aromatic polysulfone polymer, and a molded article thereof, having an aromatic nucleus to which is introduced a group having the following general formula (I):A--CH(R.sup.1)--CO--N(R.sup.2)--CH.sub.2 -- (I)wherein, A is a halogen atom, hydroxyl group, amino compound residual group, acyloxyl group, alkoxyl group, phenoxyl group, or sulfide group, R.sup.1 and R.sup.2 are a hydrogen atom or lower alkyl group, and R.sup.1 and R.sup.2 may be the same or different to a main chain of aromatic polysulfone as a side chain.Type: GrantFiled: December 28, 1993Date of Patent: September 19, 1995Assignee: Biomaterial Research Institute Co., Ltd.Inventors: Kazuo Teramoto, Naoto Hokari
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Patent number: 5447798Abstract: A concrete article having a mixture layer comprising concrete and a polysulfide-modified epoxy resin as an intermediate layer between a concrete body and a cured layer of a polysulfide-modified epoxy resin, which concrete article is excellent in corrosion resistance, durability and workability, and shows good adhesion to the concrete body and to the cured layer of the polysulfide-modified epoxy resin. This concrete article can be produced by applying a coating composition containing the polysulfide-modified epoxy resin to the concrete body in an uncured state.Type: GrantFiled: June 22, 1993Date of Patent: September 5, 1995Assignees: Toray Industries, Inc., Toray Thiokol Co., Ltd.Inventors: Tadami Kamaishi, Hideaki Tanisugi, Keiichi Minami, Akio Takahashi, Takashi Taniguchi, Hiroyoshi Kuramoto
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Patent number: 5446173Abstract: The present invention provides a cyclic sulfide compound represented by a general formula (I) ##STR1## (where R.sup.1 represents --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --O--CH.sub.2 --, --CH.sub.2 --O--, or --CH.sub.2 --S--). Polymerizable compositions for manufacturing optical products with this compound as their main component can be readily molded into plastic lenses which give superhigh refractive indices and high Abbe numbers or those which give high refractive indices and high Abbe number with low sp.grs. in addition thereto. The castings obtained from said polymerizable compositions are useful as plastic lenses for glasses, manifesting optical uniformity and being excellent in processability, transparency, and thermal, impact and light resistance. Further these polymerizable resin compositions are usable preferably as such optical products as prisms, optical fibers, optical disc substrates, color filters, or infrared absorption filters.Type: GrantFiled: March 23, 1993Date of Patent: August 29, 1995Assignee: Daiso Co., Ltd.Inventors: Hiroyuki Kanesaki, Tetsuyuki Saika, Masafumi Mikami
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Patent number: 5446096Abstract: Blends of an aromatic polysulfone (PSF) and aromatic alkyl methacrylates (PAAM) form thermodynamically miscible mixtures. They exhibit only one glass transition over a wide range of compositions and show marked improvement in mechanical and thermal properties compared to binary mixtures of PSF and other methacrylate or styrenic polymers. Furthermore, they possess better processing and workability without unwanted thermal decomposition owing to better flow properties at relatively lower temperatures.Type: GrantFiled: May 25, 1994Date of Patent: August 29, 1995Assignees: Istituto Guido Donegani S.p.A., Enichem S.p.A.Inventor: Michael A. Drzewinski
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Patent number: 5439990Abstract: There is provided an highpolymer of the formula: ##STR1## where at least one of R.sup.1 and R.sup.2 is either an alkyl group having 1 and 3 carbons atoms or an alkoxy group having 1 to 3 carbon atoms and the other is hydrogen, R.sup.3 is either a phenyl group or an alkyl group having 1 to 3 carbon atoms, x satisfies the condition that 0<x.ltoreq.1, n is a positive integer in the range of from 5 to 700, Y.sup.- is a non-nucleophilic paired ion.Type: GrantFiled: August 30, 1993Date of Patent: August 8, 1995Assignee: NEC CorporationInventors: Katsumi Maeda, Kaichiro Nakano, Etsuo Hasegawa
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Patent number: 5437922Abstract: A fibrous, non-woven thermal insulation comprises synthetic polymeric resin microfibers, staple fibers and bonding fibers which are randomly oriented and randomly intermingled in a single layer. The microfibers comprise between 25% and 95% by weight virgin synthetic polymeric resin and between 5% and 75% by weight recycled polyethylene teraphthalate. The microfibers have an average diameter between 1 to 8 microns and comprise between 35% and 80% by weight of the insulation; the staple fibers have and average diameter between 10 and 30 microns and comprise between 15% and 60% by weight of the insulation; and the bonding fibers have an average diameter between 14 and 30 microns and comprise between 5% and 25% by weight of the insulation. The bonding fibers have thermoplastic surfaces with a lower temperature softening point than the microfibers and staple fibers and bond the fibers together to form the insulation material.Type: GrantFiled: May 4, 1994Date of Patent: August 1, 1995Assignee: Schuller International, Inc.Inventors: Fred L. Jackson, Kevin P. McHugh, John S. Robertson
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Patent number: 5438098Abstract: There is provided a thermoplastic resin composition, the composition comprising1 to 99% by weight of polyarylenesulfide-type resin (I),99 to 1% by-weight of at least one resin (II) selected from the group consisting of polycarbonate-type polyphenyleneether-type resins, and ABS-type resins, and0.1 to 100 parts by weight, on the basis of 100 parts of the aforesaid resins (I)+(II), of a graft copolymer (III) as compatibilizer having a specific multi-phase structure.The thermoplastic resin composition containing the compatibilizer (III) of the present invention has a feature of each of the blended resins of a polyarylenesulfide-type resin (I) and at least one resin (II) selected from the group consisting of carbonate-type resins, polyphenyleneether-type resins and ABS-type resins, such as good impact and heat resistance, moldability, and appearance of molded articles. The composition is widely used for the manufacture of automobile parts, electrical and electronic components, and industrial parts, and the like.Type: GrantFiled: January 31, 1994Date of Patent: August 1, 1995Assignees: Nippon Petrochemicals Co., Ltd., Nippon Oil & Fats Co., Ltd.Inventors: Yuichi Orikasa, Suehiro Sakazume
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Patent number: 5438113Abstract: A thermosetting resin composition containing a silane compound a) having at least one phenolic hydroxyl group, and an organic compound b) having at least two functional groups capable of reaction with the phenolic hydroxyl group of the silane compound, wherein the silane compound a) is added in an amount of more than 10 parts by weight relative to 100 parts by weight of the organic compound b).Type: GrantFiled: March 30, 1993Date of Patent: August 1, 1995Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Shimozawa, Shinetsu Fujieda, Shuzi Hayase, Yoshihiko Nakano, Akira Yoshizumi, Ken Uchida
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Patent number: 5436300Abstract: A composition is disclosed, comprising(1) a polyamide as a dispersed phase and(2) a polyarylene sulfide as a continuous phase, wherein at least a part of the polyarylene sulfide has at least one modifying group directly bonded to the aromatic ring thereof, where the modifying group is selected from the group consisting of a carboxyl group, an alkali metal salt of a carboxyl group, and an alkaline earth metal salt of a carboxyl group, and where the modifying group is present at a ratio of 10 or more millimoles of the modifying group per kilogram of the polyamide. The composition has improved mechanical strength.Type: GrantFiled: June 17, 1993Date of Patent: July 25, 1995Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Ken Kashiwadate, Mitsuru Hoshino, Shuji Morinishi, Yukichika Kawakami
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Patent number: 5434234Abstract: The description relates to novel organo(poly)siloxanes of the general formula (I): (R.sup.1 O).sub.a HSiR.sub.2-a O[SiR .sub.2 O].sub.n SiR.sub.2 R.sup.2, in which R and R.sup.2 are the same or different and represent a monovalent, possibly substituted hydrocarbon radical; R.sup.1 is the same or different and represents a monovalent, possibly substituted hydrocarbon radical; n is a whole number of at least 2; and a is 1 or 2. The organo(poly)siloxanes are used as additives in materials which can be cross-linked to form organopolysiloxane elastomers.Type: GrantFiled: September 13, 1993Date of Patent: July 18, 1995Assignee: Wacker-Chemie GmbHInventors: Michael Stepp, Johann Mueller
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Patent number: 5429772Abstract: A gap-fill or caulking composition, comprising one or more fluid polythioether polymers having reactive terminal groups, blended with hollow spheres coated with an inert electroconductive metal or metal nitride, which provide excellent chemical bonding with graphite composite surfaces, aluminum surfaces, including composite aluminum surfaces, and with epoxy, polyurethane, and acrylic primed surfaces.Type: GrantFiled: November 19, 1993Date of Patent: July 4, 1995Assignee: Northrop Grumman CorporationInventors: Nicholas T. Castellucci, Roger M. Heitz
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Patent number: 5430123Abstract: The present invention provides new polymer compositions which contain novel substituted pyrazines or pyrazine derivatives ("NPD") which are functional and have useful application as a monomer (co-monomer) for a variety of high performance polymers such as polyester, polyarylate, polycarbonate, polyetherketones, epoxides, polyimides, polyamides, and polyamides-imides. These NPD have the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are defined herein.Type: GrantFiled: November 1, 1994Date of Patent: July 4, 1995Assignee: Hoechst Celanese CorporationInventors: George Kvakovszky, Richard Vicari, Olan S. Fruchey, Ahmed M. Tafesh, Charles B. Hilton
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Patent number: 5430121Abstract: The invention relates to thermoplastic polyurethanes modified with segmented siloxane block copolymers which are based on relatively high molecular weight dihydroxy compounds, diisocyanates, and difunctional chain extenders. The application also relates to their use in the medical field, and particularly as a catheter material.Type: GrantFiled: December 17, 1993Date of Patent: July 4, 1995Assignee: Bayer AktiengesellschaftInventors: Heinz Pudleiner, Herbert Hugl, Rolf Dhein, Hanns-Peter Muller