Hydrocarbon Having A Specified Viscosity Patents (Class 524/491)
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Patent number: 6723776Abstract: Disclosed are a polymer composition comprising (A) at least one thermoplastic elastomer selected from the group consisting of a hydrogenated styrene-isoprene-styrene block copolymer, a hydrogenated styrene-butadiene-styrene block copolymer and a styrene-ethylene-ethylene-propylene-styrene block copolymer, (B) a rubber component containing an ethylene-propylene-diene rubber, and (C) a softener, or a polymer composition further comprising (a) an olefin polymer and, if necessary, (D) carbon black, wherein the amount of the component (C) is not less than 200 parts by weight based on 100 parts by weight of the total amount of the components (A) and (B) or (A), (B)and (a), and at least portion of the rubber component (B) is crosslinked by dynamic crosslinking, and a sealant made by using the same.Type: GrantFiled: December 28, 2000Date of Patent: April 20, 2004Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Toshiaki Sakaki, Tetsuo Mizoguchi
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Patent number: 6699926Abstract: The present invention provides a lubricant-feeding material which can be used at a temperature as high as from 100° C. to 120° C., exhibits an excellent mechanical strength and stably maintains a lubricating oil having a high polarity such as ester oil and polyphenylether oil, which have excellent lubricating properties or heat resistance, or a grease comprising such a lubricating oil as a base oil in a large amount. The lubricant-feeding material comprises a polyester elastomer comprising a hard component made of a first polyester and a soft component made of a second polyester or polyether solidified containing a lubricating oil compatible with the polyester elastomer or a grease comprising the lubricating oil as a base oil, the lubricating oil oozing from the surface of the polyester elastomer.Type: GrantFiled: October 24, 2001Date of Patent: March 2, 2004Assignee: NSK Ltd.Inventors: Toshikazu Yabe, Takahiko Uchiyama
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Patent number: 6663931Abstract: The invention pertains to the use of a white oil having a select viscosity as an extrusion lubricant for PVC, including PVC potable water pipe.Type: GrantFiled: June 7, 2001Date of Patent: December 16, 2003Assignee: Crompton Corporation & Petro-CanadaInventor: Stephen Cedric Cohen
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Patent number: 6646056Abstract: The invention relates to polymer compositions useful as thermoplastic elastomers for extrusion, calendering, blow molding, thermoforming, and foam processing, and to articles made therefrom. Such improved melt strength thermoplastic elastomers include a blend of propylenic resin (A) and ethylenic elastomer (B), wherein the (A) resin is partially branched and/or the (B) elastomer is partially crosslinked by the addition of multifunctional acrylic monomer (C) containing at least three acrylate groups.Type: GrantFiled: October 16, 2001Date of Patent: November 11, 2003Assignee: Solvay Engineered PolymersInventors: Xia Zhao, Hoan Tran, Charles G. Reid
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Patent number: 6630532Abstract: The present invention is an improved block copolymer composition for extruding films having excellent stress relaxation and increased retained tension or load at elevated temperatures. The compound is comprised of: (a) from 52 to 60 percent by weight of a block copolymer having at least two polystyrene endblocks and a midblock of hydrogentated polymerized butadiene which has a vinyl content of 45 percent by weight or less (b) from 13 to 22 percent by weight of polystyrene, and (c) from 19 to 28 percent by weight of oil.Type: GrantFiled: September 7, 2000Date of Patent: October 7, 2003Assignee: Kraton Polymer U.S. LLCInventor: Keith Edward Eiden
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Patent number: 6602942Abstract: An oil-extended rubber comprising 100 weight parts of a rubber ingredient comprising a conjugated diene rubber wherein the ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn) is in the range of 1.2 to 2.2, and the conjugated diene monomer units have a vinyl bond unit content of at least 20%, and 5-100 weight parts of a process oil having a total acid value of not larger than 1.0 mgKOH/g, a pour point of not higher than 50° C. and an aromatic carbon content of at least 20%. A rubber composition comprising 100 weight parts of the above-mentioned rubber ingredients, 5-100 weight parts of the process oil and 10-200 weight parts of a reinforcing agent. This rubber composition gives a crosslinked article having high tensile strength, high abrasion resistance and reduced heat build-up, and is useful, for example, as an automobile tire material.Type: GrantFiled: October 1, 2001Date of Patent: August 5, 2003Assignee: Zeon CorporationInventor: Takeshi Karato
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Patent number: 6583314Abstract: The pot life of an isocyanate formulation is controlled by including a chain extender having (a) at least two secondary amine groups, (b) no primary amine groups, and (c) a reactivity low enough that the chain extender will not react sufficiently with isocyanate groups present in the isocyanate formulation to increase the viscosity of the isocyanate formulation to more than 2000 mPa·s within 5 seconds in the isocyanate formulation.Type: GrantFiled: July 2, 2002Date of Patent: June 24, 2003Assignee: Bayer CorporationInventors: Rick L. Adkins, William E. Slack, Edward P. Squiller
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Patent number: 6576686Abstract: This invention relates generally to linear tetrablock copolymer compositions and their use in road marking applications. These tetrablock copolymers contain polystyrene, polyisoprene and polybutadiene components. Road marking compounds prepared from these copolymers further contain a hydrocarbon resin.Type: GrantFiled: June 27, 2000Date of Patent: June 10, 2003Assignee: ExxonMobil Chemical Patents Inc.Inventors: Roger Robert Delmé, Jacques Bernard Lechat, Chantal Mathilde Martin
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Patent number: 6518348Abstract: An aqueous dispersed polymeric composition for preparing a carpet backing is provided. The aqueous dispersed polymeric composition comprises an aqueous dispersed polymeric material and a hydrophobically-modified ethylene-oxide-based urethane block copolymer. In the preferred embodiment, the aqueous dispersed polymeric material is an aqueous polyurethane dispersion composition. Moreover, a method for preparing a carpet backing using the aqueous dispersed polymeric composition is provided.Type: GrantFiled: December 14, 1999Date of Patent: February 11, 2003Assignee: Dow Global Technologies Inc.Inventors: Si-Ho Lee, Randall C. Jenkines, Rhonda R. Suarez, Rick L. Tabor
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Patent number: 6455627Abstract: The present invention is a hot melt pressure sensitive positioning adhesive for use with an absorbent article. The adhesive comprises: (a) from 6 to less than 15 percent by weight, of the total of (a), (b) and (c) of a blend of (i) from 40 to 95% by weight of a hydrogenated styrene-(butadiene and/or isoprene)-styrene block copolymer; and (ii) from 5 to 60% by weight of a blend of a hydrogenated styrene-isoprene-styrene-isoprene block copolymer; and (iii) from 0 to 40% by weight of an amorphous ethylene/propylene copolymer having a number average molecular weight of 9,000 to 30,000; and (b) from 50 to 80 percent by weight, of the total of (a), (b) and (c), of a tackifying resin which has an aromaticity such that the MMAP cloud point is at least 45° C.; and (c) from 5 to 35 percent by weight, of the total of (a), (b) and (c), of a plasticizer.Type: GrantFiled: June 22, 2000Date of Patent: September 24, 2002Assignee: Kraton Polymers US LLCInventors: Noël Raymond Maurice De Keyzer, Carolyn Ann Stoner
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Patent number: 6437038Abstract: A pressure sensitive adhesive composition suitable for medical purposes comprising a rubbery elastomeric base and one or more water soluble or water swellable hydrocolloids, the adhesive composition comprising a substantially homogeneous mixture of 15-60% of a butyl rubber, 15-60% of one or more tackifier resins, 1-10% of a tackifying liquid constituent, 20-60% of one or more hydrocolloids and 0-3% of a pigment shows very good properties as an adhesive for ostomy appliances.Type: GrantFiled: June 23, 2000Date of Patent: August 20, 2002Assignee: ColoplastInventor: Fei Chen
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Patent number: 6410623Abstract: A thermoplastic elastomer resin composition that is flexible and has superior wear resistant, oil resistant and appearance suited for automotive interior materials, and does not contain chlorine. The composition contains (a) 100 parts by weight of a block polymer composed of at least two polymeric blocks A (primarily vinyl aromatic compounds) and at least one polymeric block B (primarily conjugate diene compounds); (b) 50-170 parts by weight of a polyolefin-based resin; (c) 100-300 parts by weight of non-aromatic plasticizer for rubber; (d) 50-170 parts by weight of a thermoplastic elastomer composition containing crystalline polyolefin resin and completely or partially crosslinked ethylene-&agr;-olefin polymer (e) 5-50 parts by weight of silicon oil whose viscosity is 50,000 centistoke or more.Type: GrantFiled: January 21, 2000Date of Patent: June 25, 2002Assignee: Sumitomo Bakelite Company LimitedInventor: Ryoichi Okuda
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Publication number: 20020049277Abstract: The present invention provides a lubricant-feeding material which can be used at a temperature as high as from 100° C. to 120° C., exhibits an excellent mechanical strength and stably maintains a lubricating oil having a high polarity such as ester oil and polyphenylether oil, which have excellent lubricating properties or heat resistance, or a grease comprising such a lubricating oil as a base oil in a large amount. The lubricant-feeding material comprises a polyester elastomer comprising a hard component made of a first polyester and a soft component made of a second polyester or polyether solidified containing a lubricating oil compatible with the polyester elastomer or a grease comprising the lubricating oil as a base oil, the lubricating oil oozing from the surface of the polyester elastomer.Type: ApplicationFiled: October 24, 2001Publication date: April 25, 2002Applicant: NSK LTD.Inventors: Toshikazu Yabe, Takahiko Uchiyama
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Patent number: 6346566Abstract: The present invention provides a lubricant-feeding material which can be used at a temperature as high as from 100° C. to 120° C., exhibits an excellent mechanical strength and stably maintains a lubricating oil having a high polarity such as ester oil and polyphenylether oil, which have excellent lubricating properties or heat resistance, or a grease comprising such a lubricating oil as a base oil in a large amount. The lubricant-feeding material comprises a polyester elastomer comprising a hard component made of a first polyester and a soft component made of a second polyester or polyether solidified containing a lubricating oil compatible with the polyester elastomer or a grease comprising the lubricating oil as a base oil, the lubricating oil oozing from the surface of the polyester elastomer.Type: GrantFiled: September 28, 2000Date of Patent: February 12, 2002Assignee: NSK Ltd.Inventors: Toshikazu Yabe, Takahiko Uchiyama
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Patent number: 6344518Abstract: A conjugated diolefin copolymer rubber and a rubber composition which can produce vulcanized products exhibiting well-balanced improved properties such as wet skid properties, low hysteresis loss properties, abrasion resistance, and breaking strength irrespective of the types and combinations of fillers to be added, and is useful as a tread material for low fuel consumption tires, large tires, and high performance tires. A conjugated diolefin copolymer rubber is prepared by the copolymerization of a conjugated diolefin and a vinyl aromatic compound, and (1) has a content of the bonded vinyl aromatic compound of 5-50 wt %, (2) contains 0.01-5.0 mmol of an alkoxysilyl group having substantially non-hydrolyzable Si—O—R bond (wherein R indicates a hydrocarbon group having 4-20 carbon atoms) and 0.01-2.0 mmol of a tin-carbon bond for 100 g of the copolymer rubber, and (3) has a polymodal-type molecular weight distribution.Type: GrantFiled: November 4, 1999Date of Patent: February 5, 2002Assignee: JSR CorporationInventors: Naokazu Kobayashi, Toshihiro Tadaki, Hiroshi Akema
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Patent number: 6300404Abstract: A curable polymer composition comprising (a) an oxyalkylene polymer having a silicon-containing group which has a hydroxyl or hydrolyzable group bonded to the silicon atom and can be crosslinked through a silanol condensation reaction, and (b) a paraffinic hydrocarbon, which composition provides a cured material having improved tack which remains on the surface of the cured material.Type: GrantFiled: December 23, 1998Date of Patent: October 9, 2001Assignee: Kanegafuchi Chemical Industry Co. Ltd.Inventors: Keiko Nishimura, Masaaki Azuma, Kazumasa Hashimoto, Fumio Kawakubo
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Publication number: 20010018484Abstract: Thickeners for oil-containing compositions, particularly cosmetic and personal care compositions, are side chain crystalline polymers which are uniformly dispersed as a crystallized solid in the oil.Type: ApplicationFiled: March 16, 2001Publication date: August 30, 2001Inventors: Steven P. Bitler, David D. taft
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Patent number: 6255401Abstract: A rubber composition comprises, as a softener, a polymer obtained by cationic polymerization using a Lewis acid catalyst as an initiator. The polymer may be substantially a homopolymer of isobutylene, or substantially a copolymer of isobutylene and an aromatic vinyl compound. The homopolymer of isobutylene may be copolymerized with a conjugated diene monomer. The aromatic vinyl compound in the polymer may be styrene. In accordance with the present invention, a rubber composition exhibiting an excellent high hysteresis loss property without adverse effects on fracture properties can be provided. A pneumatic tire exhibiting excellent gripping ability can be provided by using the rubber composition in a tread.Type: GrantFiled: March 3, 1999Date of Patent: July 3, 2001Assignee: Bridgestone CorporationInventor: Koji Masaki
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Patent number: 6248825Abstract: The present invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(alkenyl benzene-co-maleimide) polymer with a maleated polyalkylene and an alkyl diamine under substantially dry conditions sufficient to form a polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product; and, dispersing the polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product with an extender oil sufficient to form the gel. The present invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.Type: GrantFiled: May 6, 1998Date of Patent: June 19, 2001Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Publication number: 20010003763Abstract: A curable polymer composition comprising (a) an oxyalkylene polymer having a silicon-containing group which has a hydroxyl or hydrolyzable group bonded to the silicon atom and can be crosslinked through a silanol condensation reaction, and (b) a paraffinic hydrocarbon, which composition provides a cured material having improved tack which remains on the surface of the cured material.Type: ApplicationFiled: December 28, 1998Publication date: June 14, 2001Inventors: KEIKO NISHIMURA, MASAAKI AZUMA, KAZUMASA HASHIMOTO, FUMIO KAWAKUBO
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Patent number: 6242523Abstract: This invention relates to a rubber composition composed of high Tg diene-based elastomers and which contains a high Tg liquid polymer of high vinyl polybutadiene and to such a composition being sulfur cured. The invention also relates to a tire having a tread of such rubber composition.Type: GrantFiled: March 8, 1999Date of Patent: June 5, 2001Assignee: The Goodyear Tire & Rubber CompanyInventors: Edward John Blok, Mark Leslie Kralevich, Jr., Paul Harry Sandstrom, Shingo Futamura
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Patent number: 6103388Abstract: The use of up to about 20 parts by weight of an organic solvent selected from the group consisting of the water soluble polyalkylene glycol ethers in conventional waterborne packaging and converting adhesives provides comparable or better adhesive products with reduced environmental and health related problems.Type: GrantFiled: January 21, 1998Date of Patent: August 15, 2000Assignee: National Starch and Chemical Investment Holding CorporationInventors: Kristina Babcock, Joseph Wieczorek, Jr.
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Patent number: 6103814Abstract: Disclosed are hot-melt adhesive compositions suitable for the manufacture of soft goods. They have a melt viscosity of 60,000 mPa.s or less at a temperature of 120.degree. C. and include: (a) 50 to 150 parts by weight of a styrenic block copolymer or mixtures and/or modified and/or hydrogenated derivatives thereof; (b) 20 to 450 parts by weight of a tackifying resin which, when incorporated into a reference composition, leads to the following properties:a tan .delta. value of 3.5 or less, wherein tan .delta. is defined as the ratio between the loss modulus and the storage modulus of said composition andan elastic retention on spandex fibers (300%) or natural latex rubber (200%) after 4 h at 40.degree. C. of 70% or more; anda crossover temperature of 95.degree. C. or less.Further disclosed are novel partially hydrogenated hydrocarbon resins which are useful as tackifying resins and have the following properties: (a) a R&B softening point (R&B) of 50.degree. C. to 150.degree. C.Type: GrantFiled: April 10, 1997Date of Patent: August 15, 2000Assignee: Hercules IncorporatedInventors: Jan vanDrongelen, Johannes Cornelis M. Simons
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Patent number: 6087431Abstract: An olefinic thermoplastic elastomer composition, which comprises a mixture comprising:(1) 100 parts by weight of an olefinic elastomer comprising ethylene and at least one .alpha.-olefin having 6 to 12 carbon atoms, and having an .alpha.-olefin copolymerization ratio of 20 to 30% by weight, a density of 0.8 to 0.9 g/cm.sup.3 and a molecular weight distribution (Mw/Mn) of less than 3.0 in terms of a ratio of weight-average molecular weight (Mw) to number-average molecular weight (Mn) calculated by gel permeation chromatography (GPC),(2) 5 to 90 parts by weight of a propylenic polymer, and(3) 5 to 250 parts by weight of an oil for rubber, the mixture being crosslinked by a radical initiator or both of a radical initiator and a crosslinking promoter.Type: GrantFiled: December 11, 1998Date of Patent: July 11, 2000Assignee: Asahi Kasei Kagyo Kabushiki KaishaInventors: Kensuke Uchida, Shinichi Shibayama
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Patent number: 6032943Abstract: An elastic roller contains EPDM rubber as a main component and has a friction coefficient of not less than 2 with respect to ordinary paper and a hardness of not more than 35.degree..The amount of softening agent added to EPDM rubber which is a main component is not more than 150 parts by weight per 100 parts by weight of rubber.Type: GrantFiled: May 2, 1994Date of Patent: March 7, 2000Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Shunichi Yabushita, Hirotoshi Murakami, Hitoshi Itani
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Patent number: 5981643Abstract: Copolymers of ethylene and a cyclic olefin, preferably a fused ring cyclic olefin (FRCO), optionally containing an alpha-olefin and/or a non-conjugated diene, display increasing glass transition temperatures (T.sub.g) as the amount of FRCO in the copolymer increases. This increase brings these polymers quickly above a T.sub.g acceptable as elastomers. Addition of specially selected process oils, based on cohesive energy densities of both the copolymer and the process oil, is shown to lower T.sub.g to a range acceptable for elastomers e.g. below about -30.degree. C. The copolymer/process oil combination can then be used in elastomer compounding operations and behave in typical elastomer fashion.Type: GrantFiled: October 9, 1997Date of Patent: November 9, 1999Assignee: Exxon Chemical Patents, Inc.Inventors: Sudhin Datta, Bruce A. Harrington
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Patent number: 5965196Abstract: A hot-melt ink composition, which is solid at room temperature, comprises a wax having a melting point of about 50.degree. C. or above, a resin and a colorant. The resin has a softening point higher than the melting point of the wax in order to obtain a transparent image, or the resin has a softening point lower than the melting point of the wax in order to obtain an opaque image.Type: GrantFiled: June 11, 1997Date of Patent: October 12, 1999Assignee: Brother Kogyo Kabushiki KaishaInventor: Hidemasa Sawada
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Patent number: 5962572Abstract: Oriented gels aliened by controlled stretching during the gel's transition from a heated, extremely viscous, non melting, non flowing state and the cooled solid gel state produces strong gels which are found to have greater tensile strength than gels of the same rigidity which have not been stretched to a selected degree during its heating and cooling histories. Gels which are selectively stretched during its (non melt flowing) heated state and rapidly cooled by flowing air, cold liquid bath or in contact with a cool surface exhibit optical birefringence when viewed under plane-polarized light.Type: GrantFiled: December 29, 1995Date of Patent: October 5, 1999Assignee: Applied Elastomerics, Inc.Inventor: John Y. Chen
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Patent number: 5908891Abstract: The present invention relates to a dispersible silicone composition comprising (I) a silicone composition prepared by reacting (i) a polyorganosiloxane, (ii) a silicon compound, optionally (iii) a finely divided filler, and (iv) a catalytic amount of a compound for promoting the reaction of the other components and (II) mineral oil. The mineral oil is effective as a dispersing agent for the silicone composition (I). The mineral oil-containing compositions are easier to handle, and produce less waste and its dispersion into mineral oil based formulations is more efficient.Type: GrantFiled: April 19, 1996Date of Patent: June 1, 1999Assignee: Dow Corning CorporationInventors: Kenneth Christopher Fey, James Habermehl
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Patent number: 5861453Abstract: The present invention relates to a silicone composition prepared by reacting a mixture comprising (i) mineral oil, (ii) a polyorganosiloxane, (iii) a silicon compound, and (iv) a catalytic amount of a catalyst. The compositions of this invention are resistant to phase separation and are useful as foam control compositions in foam producing systems.Type: GrantFiled: January 28, 1997Date of Patent: January 19, 1999Assignees: Dow Corning Corporation, Dow Corning S.A.Inventors: Teresa Lynn Datz-Siegel, Kenneth Christopher Fey, Jacqueline L'Hostis, Franck A Renauld
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Patent number: 5859114Abstract: An adhesive tape composition includes a polymer blend comprising at least one ethylene-propylene-diene terpolymer and at least one fully saturated adhesive-enhancing polymer miscible with said at least one ethylene-propylene-diene terpolymer. The tape adhesive composition further includes at least one tackifying additive compatible with said polymer blend and a sulfur and organic accelerator cure package for said polymer blend, the adhesive composition being devoid of butyl rubber which is found in most other adhesive tape compositions. This composition is seen as providing excellent long-term heat aging, weathering resistance, and low temperature properties as compared to adhesive tape compositions containing butyl rubber. Moreover, the adhesive tape composition provides more surface tack, better "quick-grab", and higher green strength as compared to adhesive tape compositions containing 100 percent EPDM rubber.Type: GrantFiled: April 1, 1996Date of Patent: January 12, 1999Assignee: Bridgestone/Firstone, Inc.Inventors: James A. Davis, John W. Fieldhouse
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Patent number: 5854351Abstract: This invention specifically discloses a process for heating trans-1,4-polybutadiene to a temperature at which it can be processed without causing oxidative gelation which comprises heating the trans-1,4-polybutadiene by exposing it to electromagnetic radiation having a frequency in the range of about 2 MHz to about 80 MHz, wherein the trans-1,4-polybutadiene is oil-extended with at least 10 phr of a processing oil.Type: GrantFiled: June 20, 1997Date of Patent: December 29, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: Thomas Robert Maier, Bruce Raymond Hahn, Brian John Doucet
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Patent number: 5849133Abstract: A low VOC cleaner/primer for EPDM and butyl roofing and waterproofing membranes. Highly volatile solvents are replaced with a carefully chosen petroleum oil and a blend of hydrocarbon resin and partially cross-linked halo-butyl rubber. The cleaner/primer contains halo-butyl rubber, a high softening point resin tackifier, a low viscosity, high volatility petroleum oil and a curing agent. When applied to a dust covered membrane the cleaner/primer effectively displaces dust and leaves behind a primer film which is conducive to adhesive bonding by either splicing tape or solvent based adhesive. When applied in a thin coating to metal surfaces the cleaner/primer effectively primes the metal to enhance the adhesion of butyl rubber based splicing tape or solvent based butyl adhesives.Type: GrantFiled: August 15, 1996Date of Patent: December 15, 1998Assignee: Carlisle Companies IncorporatedInventors: Ronald Lynn Senderling, Laura E. Gish
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Patent number: 5849824Abstract: The invention provides for a thermoset or thermoplastic gel composition containing a polymer with anhydride groups along the polymer backbone at least at outset of the fabrication process and an extender fluid, optionally including thermally conductive fillers. The gel compositions are useful for sealing wires, vibration dampening, sporting goods, and toys.Type: GrantFiled: February 6, 1996Date of Patent: December 15, 1998Assignee: Raychem CorporationInventors: Frank Mercer, Hendrik Graulus
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Patent number: 5840772Abstract: In one embodiment, the present invention relates to a method of separating a coating from a base plastic in a multilayered structure, comprising the steps of (A) providing the multilayered structure comprising at least a coating and a base plastic; (B) contacting the multilayered structure with a mixture comprising (i) a major amount of water, (ii) at least one basic compound or acid compound, (iii) at least one lifting agent, and (iv) at least one accelerator; and (C) separating the coating from the base plastic. In another embodiment, the present invention relates to a separating composition containing a major amount of water, at least one basic compound or acid compound, at least one lifting agent, and at least one accelerator. The inventive methods and compositions overcome numerous problems in the art by enabling the efficient recycling of coated polymer articles whereby clear and/or colorless recycled polymers may be obtained.Type: GrantFiled: September 18, 1996Date of Patent: November 24, 1998Assignee: PPG Industries, Inc.Inventors: Donald S. Peters, Randall J. Brent
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Patent number: 5798404Abstract: The hair care appliance of this invention has a housing, which holds a set of hair curlers and encloses electrical heating means for heating the curlers, and has a transparent cover which covers the set of curlers and the top of the housing. Each curler has a reversibly thermochromic thermoplastic elastomeric surface layer (around which hair is to be curled) which preferably covers a mandrel portion of a thermoplastic body. The thermoplastic body has ends of larger diameter than the mandrel portion of the body, and the mandrel may be hollow. A hollow mandrel may contain a double-walled metal core, which may contain a heat-retaining material. The elastomeric surface layer is preferably molded from an thermoplastic elastomer composition containing particulate thermochromic material, which preferably comprises reversibly thermochromic dye encapsulated in micro-capsules. The thermochromic dye components are chosen to be non-toxic and environmentally benign.Type: GrantFiled: August 8, 1996Date of Patent: August 25, 1998Inventors: Lawrence P. Monty, Patrick T. Monty
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Patent number: 5750269Abstract: A removable coating composition comprises oxidized polyethylene wax, paraffin wax, and acrylic copolymer. A process of protecting surfaces comprises applying the coating composition in an aqueous emulsion to a surface and drying. The resulting coated surface is protected such that when graffiti is applied to the coated surface, the graffiti and coating are easily removed with hot water or steam.Type: GrantFiled: December 28, 1995Date of Patent: May 12, 1998Assignee: Eastman Chemical CompanyInventor: Vernon Kee Park
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Patent number: 5741840Abstract: A hot melt pressure sensitive adhesive comprising a) from about 15% to about 30% by weight of a linear styrene-ethylene/butylene-styrene copolymer having a styrene content from about 15% to about 35% by weight and a coupling efficiency of less than about 75%; b) from about 20% to about 50% by weight of a tackifying resin selected from the group consisting of those tackifying resins having a softening point of less than about 100.degree. C.; c) from about 30% to about 50% by weight of a plasticizing oil; and d) up to about 15% of a compatible polymer wherein the total polymer content does not exceed 30% by weight of the adhesive wherein the hot melt pressure sensitive adhesive fails cohesively during use.Type: GrantFiled: July 3, 1996Date of Patent: April 21, 1998Assignee: H.B. Fuller Licensing & Financing, Inc.Inventors: Jeffrey S. Lindquist, Lisa L. Ryan
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Patent number: 5710206Abstract: A gel or gelloid composition contains (a) more than 50% by weight (based on total polymer content) of a block copolymer containing relatively hard blocks and relatively elastomeric blocks; (b) a polyphenylene ether; and (c) at least 500 parts by weight of an extender liquid per 100 parts by weight of the block copolymer, which liquid extends and softens the elastomeric blocks of the block copolymer. The polyphenylene ether is present in an amount sufficient to increase the softening or melting temperature of the gel or gelloid composition over that of the same composition without polyphenylene ether. The gel or gelloid composition is useful for sealing applications.Type: GrantFiled: March 4, 1996Date of Patent: January 20, 1998Assignee: Raychem LimitedInventors: Jane Valarie Francis, Noel Marchel Michiel Overbergh, Jan Lodewijk M. F. G. Vansant
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Patent number: 5677370Abstract: The invention relates to a ceramic color paste, in particular a color paste containing alkyd resins, for the production of decorations on surfaces of glass, porcelain or ceramic, and a printing medium for the preparation of the color paste.Known generic color pastes and printing media for producing the same generally have an intense odor and tend to form a skin if an alkyd resin is present.The invention overcomes these disadvantages by the solvent system of the printing medium of the color paste containing substantially at least 50 to 100% by weight, preferably above 70% by weight, of one or more isoparaffins and from 0 to 50% by weight, preferably from 0 to 30% by weight, of one or more solvating plasticisers. Skin formation is prevented by the presence of an aldoxime or ketoxime containing 3 to 6 carbon atoms or an anti-oxidant for polymer systems.Type: GrantFiled: June 17, 1996Date of Patent: October 14, 1997Assignee: Cerdec AG Keramische FarbenInventors: Adalbert Huber, Silke Schafer
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Patent number: 5677375Abstract: A gas phase process for the production of an in situ polyethylene blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a magnesium/titanium based catalyst system including an activator and a cocatalyst in each of two fluidized bed reactors corrected in series, under polymerization conditions, with the provisos that:(a) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series;(b) other than the active catalyst referred to in proviso (a) and the cocatalyst referred to in proviso (f), no additional catalyst is introduced into the second reactor;(c) in the first reactor in which a relatively high molecular weight copolymer is made:(1) the alpha-olefin is present in a ratio of about 0.01 to about 0.4 mole of alpha-olefin per mole of ethylene; and(2) optionally, hydrogen is present in a ratio of about 0.001 to about 0.Type: GrantFiled: March 29, 1996Date of Patent: October 14, 1997Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Mahmoud R. Rifi, Carlo F. Martino
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Patent number: 5583174Abstract: Mixtures ofA) 75 to 99.5 wt. % of a high molecular weight, thermoplastic, aromatic polycarbonate with a molecular weight M.sub.w (weight average) of at least 10,000 which contains bifunctional carbonate structural units of the formula (I), ##STR1## in which R.sup.1 and R.sup.2, independently of each other, represent hydrogen, halogen, preferably chlorine or bromine, or a C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl, preferably phenyl, or C.sub.7 -C.sub.12 -aralkyl, preferably phenyl-C.sub.1 -C.sub.4 -alkyl, in particular a benzyl group,m is an integer from 4 to 7, preferably 4 or 5,R.sup.3 and R.sup.4 can be selected separately for each X and, independently of each other, represent hydrogen or a C.sub.1 -C.sub.6 -alkyl group andX represents carbon,with the proviso that R.sup.3 and R.sup.4 simultaneously represent an alkyl group on at least one X atom.B) 0.5 to 15 wt.Type: GrantFiled: August 11, 1995Date of Patent: December 10, 1996Assignee: Bayer AGInventors: Burkhard Kohler, Peter Bier
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Patent number: 5569693Abstract: An improved stretch/cling film suitable for pallet wrap, produced by the blown film process exhibits superior performance qualities similar to stretch cling film produced by the cast film process, but with an improved tear resistance; such film has reduced noise characteristics. The film of the invention is produced by blending 40 to 80% by weight linear low density polyethylene polymerized with an .alpha.-olefin comonomer having a melt index range of 0.8 to 1.2 and a density range of 0.916 to 0.920; with 60 to 20% by weight of a flexible semi-crystalline polyethylene with a melt index 0.8 to 2.0 and a density of 0.86 to 0.91; with 3 to 9% by weight liquid polyolefin and 0.1 to 4.0% by weight of a surfactant. The films of the invention exhibit a two-sided cling.Type: GrantFiled: June 5, 1995Date of Patent: October 29, 1996Assignee: Borden Inc.Inventors: Anil G. Doshi, Frank T. Kos, Dattaram C. Salkar
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Patent number: 5545685Abstract: An adhesive tape composition includes a polymer blend comprising at least one EPDM rubber, and preferably three EPDM rubbers in substantially equal amounts, and an adhesive-enhancing polymer selected from the group consisting of polyisoprene, polybutadiene, and ethylene-propylene copolymer and mixtures thereof. The tape adhesive composition further includes at least one tackifying additive compatible with said polymer blend and a sulfur and organic accelerator cure, package for said polymer blend, the adhesive composition being devoid of butyl rubber which is found in most other adhesive tape compositions. This composition is seen as providing excellent long-term heat aging, weathering resistance, and low temperature properties as compared to adhesive tape compositions containing butyl rubber. Moreover, the adhesive tape composition provides more surface tack, better "quick-grab", and higher green strength as compared to adhesive tape compositions containing 100 percent EPDM rubber.Type: GrantFiled: April 28, 1995Date of Patent: August 13, 1996Assignee: Bridgestone/Firestone, Inc.Inventors: James A. Davis, Joseph R. Hoppert, Chester T. Chmiel, Brian S. Alexander
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Patent number: 5525667Abstract: A novel biaxially oriented polystrene sheet product and process for making the sheet. Oriented polystyrene sheet is prepared by melt extruding a polymer, such as styrenic resin having average molecular weight of at least 270,000, blended with a processing agent, such as mineral oil, to lower glass transition temperature of the resin by at least 10.degree. C. The cooled extruded sheet is biaxially oriented under reduced orientation load conditions and orientation temperature. In a preferred embodiment styrenic resin is blended with about 3-10 wt % paraffinic hydrocarbon oil, such as mineral white oil or the like, in the substantial absence of other additives to provide a clear, oriented polystyrene sheet product having high modulus and low haze.Type: GrantFiled: August 2, 1995Date of Patent: June 11, 1996Assignee: Tenneco Plastics, Inc.Inventors: Alan H. Forbes, Harry R. Sheets
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Patent number: 5521244Abstract: The present invention relates to a readily molded engineering plastic composition comprising:polyphenylene ether polymer; optionallya second polymer chosen from polyesters, polyamides and polycarbonates; andabout 0.05 to about 5 weight percent hydrogenated poly (alpha-olefin) fluid.Type: GrantFiled: December 30, 1994Date of Patent: May 28, 1996Assignee: General Electric CompanyInventors: John B. Yates, Alexandros Hasson
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Patent number: 5504136Abstract: An adhesive tape composition includes a polymer blend comprising at least one EPDM rubber, and preferably three EPDM rubbers in substantially equal amounts, and an adhesive-enhancing polymer selected from the group consisting of polyisoprene, polybutadiene, and ethylene-propylene copolymer and mixtures thereof. The tape adhesive composition further includes at least one tackifying additive compatible with said polymer blend and a sulfur and organic accelerator cure package for said polymer blend, the adhesive composition being devoid of butyl rubber which is found in most other adhesive tape compositions. This composition is seen as providing excellent long-term heat aging, weathering resistance, and low temperature properties as compared to adhesive tape compositions containing butyl rubber. Moreover, the adhesive tape composition provides more surface tack, better "quick-grab", and higher green strength as compared to adhesive tape compositions containing 100 percent EPDM rubber.Type: GrantFiled: October 27, 1994Date of Patent: April 2, 1996Assignee: Bridgestone/Firestone, Inc.Inventors: James A. Davis, Joseph R. Hoppert, Chester T. Chmiel, Brian S. Alexander
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Patent number: 5504135Abstract: An oil composition which has a kinematic viscosity at 100.degree. C. of from 32 to 50 cSt and which contains less than 3 wt. percent polynuclear aromatic compounds is employed as a process oil for rubber compounds, especially aromatic rubbers. The process oil is compatible with aromatic rubbers but contains less toxic polynuclear aromatic compounds than conventional aromatic rubber process oils. Rubber products of acceptable quality are produced by the use of the said oil composition.Type: GrantFiled: September 27, 1993Date of Patent: April 2, 1996Assignee: Exxon Research and Engineering CompanyInventors: Emilio Ardrizzi, Rolando Vivirito
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Patent number: 5488078Abstract: Disclosed are compositions of a two-phase mixture of a structural bitumen component and a thermoplastic polymer derived predominantly of ethylene and at least one other non-cyclic alpha-olefin, wherein the polymer has a crystallinity of less than 18% and a solubility distribution index value of less than 28.degree. C. Also disclosed is a method for producing such compositions. Such compositions are particularly useful as road paving and construction materials.Type: GrantFiled: April 28, 1994Date of Patent: January 30, 1996Assignee: Exxon Chemical Patents Inc.Inventors: John R. Shutt, Benoit M. F. Touzard
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Patent number: H1949Abstract: A pressure-sensitive tape is provided having a polyolefin backing, a primer comprising an elastomeric block copolymer which primer is applied from a non-aromatic hydrocarbon solvent, said tape further comprising an adhesive on the thus primed surface. Because the primer is laid down from a solution in a non-aromatic hydrocarbon solvent such as methyl cyclohexane the process utilizes an environmentally-friendly solvent.Type: GrantFiled: February 1, 1996Date of Patent: March 6, 2001Assignee: Shell Oil CompanyInventors: David Romme Hansen, Robert Andrew Tait, Lydia Ann Salazar