Interpolymer With At Least One Aliphatic Hydrocarbon Monomer, E.g., Butyl Rubber, Etc. Patents (Class 524/574)
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Patent number: 7101926Abstract: The present invention relates to substantially free-flowing polymer particles. The polymer particles are those which have a one millimeter penetration temperature of less than about 75° C. as determined by thermal mechanical analysis or an unconfined yield strength of greater than about 15 pounds per square foot (73 kilograms per square meter). The composition also comprises an effective amount of an anti-blocking agent in the presence or absence of a binding agent.Type: GrantFiled: October 8, 2004Date of Patent: September 5, 2006Assignee: The Dow Chemical CompanyInventors: James W. McMichael, Jeffrey Richard Montayne, Friedheim Bunge, Shirkant V. Dhodapkar
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Patent number: 7098268Abstract: This invention relates to a resin composition useful as a vibration-damping agent and the like. The resin composition is formulated by adding 1 wt % or more of styrenated phenol obtained by the reaction of a phenol with styrene to a polycyclic aromatic oligomer obtained by condensing a polycyclic aromatic compound containing 2 to 3 rings and formaldehyde. The polycyclic aromatic oligomer is obtained by the reaction of a polycyclic aromatic compound with formaldehyde and, if necessary, further with a phenol in the presence of an acid catalyst and has a number average molecular weight of 300–1000. The styrenated phenol is obtained by the reaction of 1 mole of a phenol with 1–2.5 moles of styrene in the presence of an acid catalyst.Type: GrantFiled: August 1, 2002Date of Patent: August 29, 2006Assignee: Nippon Steel Chemical Co., Ltd.Inventors: Toshihide Senzaki, Takahiro Imamura
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Patent number: 7094822Abstract: The present invention relates to thermally conductive, elastomeric pads. The pads can be made by injection-molding a thermally conductive composition comprising about 30 to 60% by volume of an elastomer polymer matrix and about 25 to 60% by volume of a thermally conductive filler material. The resultant pads have heat transfer properties and can be used as a thermal interface to protect heat-generating electronic devices.Type: GrantFiled: June 17, 2004Date of Patent: August 22, 2006Assignee: Cool Shield, Inc.Inventors: E. Mikhail Sagal, Kevin A. McCullough, James D. Miller
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Patent number: 6953823Abstract: Non-asbestos elastomeric insulating materials for solid propellant rocket motors are disclosed. The insulating materials are composed of EPDM rubber, polyaramide fiber, liquid EPDM rubber, magnesium hydroxide or aluminum hydroxide, silicon dioxide, chlorinated flame retardant compound and zinc hydroxystannate. The char forming organic fiber is used to substitute asbestos in traditional insulating materials that are believed to cause serious environmental problems. These fillers in the formulation, which when combined, have a synergistic effect that reduces the ablation rate significantly. Also, use of zinc hydroxystannate to substitute Sb2O3, may further reduce density of the insulator and smoke density and smoke toxicity of exhausted gas from the rocket motor.Type: GrantFiled: May 14, 2003Date of Patent: October 11, 2005Assignee: Chung Shan Institute of Science and TechnologyInventor: Jun-Ling Fan
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Patent number: 6943209Abstract: The present invention provides a vibration-insulating rubber molded product having flash, where a thicker portion of the flash can be easily evaluated by visually observing a light-transmittance thereof to prevent the product from 5 cracking, and to find damage of a mold used for forming the product with ease. The vibration-insulating rubber molded product of the present invention comprises a rubber component, a silica powder and a carbon black. The content of the carbon black is determined such that (a) a portion having a thickness of 1 mm or less in the flash is substantially transparent or translucent with white or gray color, and that (b) a portion having a thickness of 2 mm or more in the flash is substantially opaque with black color, whereby whether the flash includes a portion having a thickness of 2 mm or more can be evaluated by visual observation.Type: GrantFiled: July 22, 2002Date of Patent: September 13, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Yasuhiro Goshima
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Patent number: 6852787Abstract: The present invention relates to substantially free-flowing polymer particles. The polymer particles are those which have a one millimeter penetration temperature of less than about 75° C. as determined by thermal mechanical analysis or an unconfined yield strength of greater than about 15 pounds per square foot (73 kilograms per square meter). The composition also comprises an effective amount of an anti-blocking agent in the presence or absence of a binding agent.Type: GrantFiled: August 16, 2000Date of Patent: February 8, 2005Inventors: James W. McMichael, Friedhelm Bunge, Jeffrey R. Montanye, Shrikant V. Dhodapkar
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Patent number: 6822020Abstract: Modified silica fillers are prepared by contacting silica with blends or mixtures containing diorganodihalosilanes and tetrahalosilanes in weight ratios of 1:0.1 to 1:2, respectively. While dialkyldichlorosilanes and tetrahalosilanes such as dimethyldichlorosilane and silicon tetrachloride, respectively, are most preferred, the blends or mixtures may also comprise compositions containing other silanes such as mercaptopropyltriethoxysilane.Type: GrantFiled: July 18, 2002Date of Patent: November 23, 2004Assignee: Dow Corning CorporationInventor: Anthony Revis
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Patent number: 6794428Abstract: A coupler is described for use in carbon black filled rubber compositions. The coupler includes an amine group and a thiol group or a polysulfidic linkage. The coupler improves the interaction of the carbon black with the rubber as measured by a decrease in the tan delta at 60° C. while substantially maintaining the tan delta at 0° C.Type: GrantFiled: October 29, 2002Date of Patent: September 21, 2004Assignee: The Lubrizol CorporationInventors: James D. Burrington, Benny R. Richardson, Joseph W. Pialet, Ann E. Wykoff, Roger L. Sowerby, Kenneth W. Lee, Ralph E. Kornbrekke, Ghebrehiwet N. Ghebremeskel, Kirk E. Davis
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Patent number: 6624230Abstract: Mixture of at least one filler and organosilicon compounds of the general formula Y—Sx-Z, wherein the filler is surface-treated, hydrophobic, precipitated silica, are prepared by homogeneously applying an organosilicon compound from a nozzle to the surface-treated, hydrophobic, precipitated silica in a mixing unit at a temperature of less than 50° C. The mixture can be used in rubber mixtures.Type: GrantFiled: April 13, 2001Date of Patent: September 23, 2003Assignee: Degussa AGInventor: Hans-Detlef Luginsland
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Publication number: 20030119960Abstract: A rubber composition is disclosed wherein the rubber composition contains at least (a) a rubber component; (b) a silica filler; (c) a coupling agent; and (d) a cure-enhancing amount of at least one polyalkylene oxide having a weight average molecular weight less than 200. The compositions may also include suitable amounts of other ingredients such as carbon black, antiozonants, antioxidants, etc.Type: ApplicationFiled: September 4, 2001Publication date: June 26, 2003Inventors: Sung W. Hong, Martin J. Hannon, Peter K. Greene
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Patent number: 6548594Abstract: Rubber mixtures which comprise (a) a rubber or a mixture of rubbers, (b) a silicatic filler, (c) an organosilane of the general formula (I) R1R2R3Si—R4—SH (I) (d) an alkylsilane of the general formula (II) R1R2R3Si—R5 (II). They are prepared by mixing the rubber or the mixture of rubbers, the silanes according to the formulae I and II and the silicatic filler in a mixing unit and adding the silanes according to the formulae I and II together or separately in succession. They can be used in shaped articles.Type: GrantFiled: March 27, 2001Date of Patent: April 15, 2003Assignee: Degussa AGInventors: Hans-Detlef Luginsland, Andre Hasse
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Patent number: 6534578Abstract: A refrigerant hose for an air conditioner has an inner wall layer formed of a laminate of an inner resin layer and an outer rubber layer bonded by its vulcanization to the resin layer. The rubber layer is of a composition comprising butyl rubber, an adhesive material based on resorcinol and a vulcanizing agent based on an alkylphenol-formaldehyde resin, and having a bromine content of at least 0.5% by weight. The hose having the inner wall layer surrounded by a reinforcing layer and an outer wall layer exhibits a high adhesive strength even at an elevated temperature between its refrigerant-impermeable resin layer and its water-impermeable rubber layer.Type: GrantFiled: July 27, 2000Date of Patent: March 18, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Eiichi Daikai, Koji Senda
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Patent number: 6525110Abstract: A rubber composition having improved properties containing a starting rubber (e.g., diene rubber) and a polysiloxane having the following alkoxysilyl group (I) and/or acyloxysilyl group (II) and having an average degree of polymerization of 3 to 10,000: ≡Si—OR1 (I) ≡Si—OCOR2 (II) wherein, R1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 18 carbon atoms or an organic group containing an ether bond and R2 is hydrogen or a hydrocarbon group having 1 to 21 carbon atoms.Type: GrantFiled: November 16, 2000Date of Patent: February 25, 2003Assignee: The Yokohama Rubber Co., Ltd.Inventors: Fumito Yatsuyanagi, Kazunori Ishikawa, Yoshiaki Hashimura, Tetsuji Kawazura, Hiroyuki Kaido
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Publication number: 20020183422Abstract: The present invention provides a vibration-insulating rubber molded product having flash, where a thicker portion of the flash can be easily evaluated by visually observing a light-transmittance thereof to prevent the product from 5 cracking, and to find damage of a mold used for forming the product with ease.Type: ApplicationFiled: July 22, 2002Publication date: December 5, 2002Applicant: Honda Giken Kogyo Kabushiki KaishaInventor: Yasuhiro Goshima
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Patent number: 6489402Abstract: A rubber vibration insulator for use in a vibration insulation device integrated into precision instruments such as acoustic, computer-associated and game instruments, which insulator has a low hardness, a small compression set, a large loss tangent and a small temperature dependence and can be prepared by curing a rubber composition comprising 100 parts by weight of a partially crosslinked butyl rubber and 50 to 200 parts by weight of an extender component as well as a vulcanizing agent.Type: GrantFiled: July 30, 1999Date of Patent: December 3, 2002Assignee: Yamauchi CorporationInventors: Hiroshi Ohyama, Ryo Ogawa, Hiroyuki Maruko, Hiroshi Kuramochi
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Patent number: 6441070Abstract: The present invention relates to rubber compositions containing an elastomer and a trivalent phosphorous compound-silica complex.Type: GrantFiled: July 14, 2000Date of Patent: August 27, 2002Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, David John Zanzig, Robert Charles Hirst
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Patent number: 6403727Abstract: A process for selectively hydrogenating ethylenically unsaturated double bonds in polymers P involves reacting the polymers P with hydrogen in the presence of at least one hydrogenation catalyst selected from the salts and complex compounds of rhodium and/or of ruthenium in an aqueous dispersion of the polymers P that comprises not more than 20% by volume of an organic solvent. This process can be used to give hydrogenated polymer dispersions and, from these dispersions, polymers. Also claimed are aqueous polymer dispersions comprising polymers P′, which include structural units I, II and III as in claim 10, with or without structural units IV and/or V as in claim 11.Type: GrantFiled: June 1, 2000Date of Patent: June 11, 2002Assignee: BASF AktiengesellschaftInventors: Hartmann F. Leube, Jürgen Schmidt-Thümmes, Edgar Zeller, Heiko Maas
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Publication number: 20020049276Abstract: A novel thermoplastic elastomer gel composition and method of making same is disclosed which contains a blend of SBS (styrene-butadiene-styrene) or an SBS polymer and a plasticizing oil. The thermoplastic elastomer gel composition exhibits a combination of properties including unexpectedly low tack. The thermoplastic elastomer gel composition requires less plasticizing oil and lower processing temperatures. Accordingly, the thermoplastic elastomer gel composition of the present invention is less costly. Additional polymers such as SEBS (styrene-ethylene-butylene-styrene), SEPS (styrene-ethylene-propylene-styrene) and SIS (styrene-isoprene-styrene) and block copolymers and blends thereof may also be used.Type: ApplicationFiled: April 5, 2001Publication date: April 25, 2002Inventor: Paul D. Zwick
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Publication number: 20020019478Abstract: The present invention provides a rubber vibration insulator for use in a vibration insulation device integrated into precision instruments such as acoustic, computer-associated and game instruments, which insulator has a low hardness, a small compression set, a large loss tangent and a small temperature dependence. The insulator can be prepared by crosslinking and curing a rubber composition comprising 100 parts by weight of a partially crosslinked butyl rubber and 50 to 200 parts by weight of an extender component.Type: ApplicationFiled: July 30, 1999Publication date: February 14, 2002Inventors: HIROSHI OHYAMA, RYO OGAWA, HIROYUKI MARUKO, HIROSHI KURAMOCHI
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Patent number: 6338898Abstract: A heat-conductive rubber composition material, which comprises a rubber essentially consisting of an acrylic rubber, a butyl rubber, an ethylene propylene rubber or a blended rubber which comprises at least two of acrylic rubber, butyl rubber, and ethylene propylene rubber are blended, and 50 to 85 weight % of hydrophobic magnesium oxide powder, a heat-conductive rubber sheet prepared by forming the above thermal conductive rubber composition material, and a heat-conductive sheet, which comprises a soft metal sheet and a rubber layer formed on at least one surface of the soft metal sheet.Type: GrantFiled: June 20, 2000Date of Patent: January 15, 2002Assignee: Furakawa Electric Co., Inc.Inventors: Toshio Miyahara, Naoki Kimura, Jun Niekawa
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Patent number: 6337361Abstract: A rubber composition having improved properties containing a starting rubber (e.g., diene rubber) and a polysiloxane having the following alkoxysilyl group (I) and/or acyloxysilyl group (II) and having an average degree of polymerization of 3 to 10,000: ≡Si—OR1 (I) ≡Si—OCOR2 (II) wherein, R1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 18 carbon atoms or an organic group containing an ether bond and R2 is hydrogen or a hydrocarbon group having 1 to 21 carbon atoms. The polysiloxane is impregnated in an inert powder.Type: GrantFiled: March 16, 2000Date of Patent: January 8, 2002Assignee: The Yokohama Rubber Co., Ltd.Inventors: Fumito Yatsuyanagi, Kazunori Ishikawa, Yoshiaki Hashimura, Tetsuji Kawazura, Hiroyuki Kaido
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Patent number: 6310164Abstract: Unsaturated copolymer which is a copolymer of an &agr;olefin of 2 to 12 carbon atoms and a conjugated diene monomer represented by the following formula (I-a) and has the properties: (a) in said copolymer, 1,2-addition units (including 3,4-addition units) derived from the conjugated diene monomer (I-a) form double bonds in the side chain of the copolymer, 1,4-addition units derived from the conjugated diene monomer (I-a) form double bonds in the main chain of the copolymer, and the quantity ratio of the double bonds of the side chain derived from the 1,2-addition units to the double bonds of the main chain derived from the 1,4-addition units (side chain double bonds derived from 1,2-addition units/main chain double bonds derived from 1,4-addition units) is in the range of 10/90 to 99/1 (b) five-membered rings are present in the main chain of said copolymer; and (c) the quantity ratio of the double bonds from all of the addition units to the five-membered rings (total of double bonds from all addition units/fiType: GrantFiled: July 20, 1998Date of Patent: October 30, 2001Assignee: Mitsu Chemicals INCInventors: Kenichi Morizono, Keiji Okada, Masayoshi Yamaguchi
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Patent number: 6300398Abstract: The subject invention is directed to polymer compositions which comprise a homogeneous ethylene/&agr;-olefin interpolymer, a wax and a nucleating agent, wherein the nucleating agent is provided in an effective amount such that the percent elongation at break of the polymer composition is at least about fifty percent greater than the percent elongation at break of a comparative composition which lacks the nucleating agent. The polymer compositions of the invention will find utility in applications r equiring high elongation at break, while maintaining a high onset of crystallization temperature, such as in the high-speed coating of fabrics, carpet backing, floor tile and sheeting, and adhesives.Type: GrantFiled: April 14, 1998Date of Patent: October 9, 2001Assignee: The Dow Chemical CompanyInventors: Gary Lee Jialanella, Thomas J. McKeand, Jr., Kalyan Sehanobish
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Patent number: 6211271Abstract: A process for producing a vulcanizable rubber composition containing silica and carbon black, comprises the step of intimately mixing at a temperature of from 130° to 180° C. at least a first cross-linkable unsaturated chain polymer with a first carbon black-based reinforcing filler, so as to obtain a first rubber composition capable of allowing a subsequent effective dispersion of a second silica-based reinforcing filler and of a second cross-linkable unsaturated chain polymer. The rubber composition thus obtained shows a homogeneous dispersion of the reinforcing fillers, in particular of the silica-based reinforcing filler, constant physical-mechanical characteristics, and improved drawability, and is particularly suitable for the manufacture of tire treads with low rolling resistance.Type: GrantFiled: July 14, 1999Date of Patent: April 3, 2001Assignee: Pirelli Pneumatici S.p.A.Inventors: Luciano Garro, Angela Amaddeo, Roberto Pessina
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Patent number: 6211276Abstract: A heat-conductive rubber composition material, which comprises a rubber essentially consisting of an acrylic rubber, a butyl rubber, an ethylene propylene rubber or a blended rubber which comprises at least two of acrylic rubber, butyl rubber, and ethylene propylene rubber are blended, and 50 to 85 weight % of hydrophobic magnesium oxide powder, a heat-conductive rubber sheet prepared by forming the above thermal conductive rubber composition material, and a heat-conductive sheet, which comprises a soft metal sheet and a rubber layer formed on at least one surface of the soft metal sheet.Type: GrantFiled: June 3, 1998Date of Patent: April 3, 2001Assignee: The Furukawa Electric Co., Ltd.Inventors: Toshio Miyahara, Naoki Kimura, Jun Niekawa
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Patent number: 6197875Abstract: A particulate silica which has been treated with a polymer oil jelly.Type: GrantFiled: March 19, 1999Date of Patent: March 6, 2001Assignee: Rhodia LimitedInventors: Ian Malcolm Mackinnon, Douglas Martin Butcher
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Patent number: 6121347Abstract: A rubber composition having improved properties containing a starting rubber (e.g., diene rubber) and a compounding agent consisting of a silane coupling agent and a carbon black, calcium carbonate or stearic acid powder impregnated with a polysiloxane having the following alkoxysilyl group (I) and/or acyloxysilyl group (II) and having an average degree of polymerization of 3 to 10,000:.tbd.Si--OR.sup.1 (I).tbd.Si--OCOR.sup.2 (II)wherein, R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 18 carbon atoms or an organic group containing an ether bond and R.sup.2 is hydrogen or a hydrocarbon group having 1 to 21 carbon atoms.Type: GrantFiled: November 10, 1998Date of Patent: September 19, 2000Assignee: The Yokohama Rubber Co., Ltd.Inventors: Fumito Yatsuyanagi, Kazunori Ishikawa, Yoshiaki Hashimura, Tetsuji Kawazura, Hiroyuki Kaido
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Patent number: 6107384Abstract: A silica-blended rubber composition comprising 100 parts by weight of sulfur-vulcanizable rubber blended with 10 to 100 parts by weight of silica, 3 to 20% by weight of a silane coupling agent based on the silica and 1 to 20% by weight of sodium borate based on the silica. An alkoxy group-containing silane coupling agent is preferred as the silane coupling agent, and sodium tetraborate is preferred as the sodium borate.Type: GrantFiled: March 17, 1999Date of Patent: August 22, 2000Assignee: Bridgestone CorporationInventors: Kazuya Hatakeyama, Kazuaki Someno
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Patent number: 6103817Abstract: A composite clay material with the interlayer distance sufficiently expanded by dispersing clay mineral in a low polar polymer on a molecular level and the method for producing the same, blend material and composite clay rubber material using the same and the production method thereof. The composite clay material is formed of a clay mineral rendered compatible with an organic material through ionic bonding to an organic onium ion having 6 or more carbon number and a main guest molecule having a polar group in its main chain and side chain and molecular length equal to or larger than that of said organic onium ion. The main guest molecule is incorporated at least partially into an interlayer section of the clay mineral which has a hydrogen bonding with the polar group of the main guest molecule. The main guest molecule preferably has a molecular weight ranging from about 100 to 100000.Type: GrantFiled: January 7, 1999Date of Patent: August 15, 2000Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Denso CorporationInventors: Arimitsu Usuki, Makoto Kato, Akane Okada
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Patent number: 6084046Abstract: A random copolymer comprising ethylene, an .alpha.-olefin and a branched conjugated polyvalent olefin, wherein (i) ethylene, the .alpha.-olefin and an iodine value respectively satisfy the following inequalities: 0<ethylene<100 (% by mol), 0<.alpha.-olefin<100 (% by mol) and 0<iodine value<370 (g/100 g), (ii) an intrinsic viscosity [.eta.] measured in decalin at 135.degree. C. of the random copolymer satisfies the following inequality: 0.1 (dl/g)<[.eta.]<10 (dl/g) and (iii) a molecular weight distribution (Mw/Mn).ltoreq.5.Type: GrantFiled: February 9, 1998Date of Patent: July 4, 2000Assignee: Sumitomo Chemical Company, LimtedInventors: Hirofumi Johoji, Tsuyoshi Takei, Tadaaki Nishiyama
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Patent number: 6057392Abstract: A method is disclosed for processing a rubber composition comprising thermomechanically mixing the rubber composition while maintaining a rubber temperature in a range of from 160.degree. C. to 190.degree. C. for a period of time ranging from 4 to 8 minutes, wherein said rubber composition is characterized by(i) 100 parts by weight of at least one sulfur vulcanizable elastomer containing olefinic unsaturation;(ii) 10 to 250 phr of a filler selected from the group consisting of silica, carbon black and mixtures thereof; and(iii) 0.5 to 50 phr of an ester of the formula: ##STR1## wherein R.sup.1 is selected from the group consisting of alkyls having from 16 to 18 carbon atoms and alkenyls and alkadienyls having from 16 to 18 carbon atoms; and R.sup.2 is selected from the group consisting of alkyls having from 12 to 22 carbon atoms.Type: GrantFiled: February 17, 1998Date of Patent: May 2, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson Gibson Wideman, Paul Harry Sandstrom
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Patent number: 6020441Abstract: Polymers containing ethylenically unsaturated double bonds are hydroformylated by reacting aqueous dispersions of the polymers with hydrogen and carbon monoxide in the presence of suitable hydroformylation catalysts.Also provided are the polymer dispersions obtainable by this process and the hydroformylated polymers themselves.Type: GrantFiled: May 12, 1997Date of Patent: February 1, 2000Assignee: BASF AktiengesellschaftInventors: Edgar Zeller, Hartmann F. Leube, Bernhard Schlarb, Heinz-Josef Kneuper, Michael Roper
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Patent number: 5895798Abstract: A liquid rubber composition including a 1,2-polybutadiene resin component dispersed in the form of fine particles in a liquid rubber component in a weight ratio of 1:100 to 50:100 has a high dispersion stability and a low specific gravity and is useful for forming a cured rubber article having a high elastic modulus and a satisfactory mechanical strength and ultimate elongation.Type: GrantFiled: October 6, 1997Date of Patent: April 20, 1999Assignee: Ube Industries, Ltd.Inventors: Naomi Okamoto, Takeshi Shoda
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Patent number: 5880218Abstract: Compounded polymeric compositions containing processed paint sludge putty as a replacement for polymeric components are provided. The paint sludge comprises from about 5 to 90% by weight of the total compounded polymeric composition and may be decatalyzed so that it contains uncured polymer for use in a variety of compositions including pressure sensitive sealants, caulking sealants, automotive sealants, polyvinyl chloride plastics, rubbers and asphalt cement coatings.Type: GrantFiled: November 13, 1995Date of Patent: March 9, 1999Assignee: Aster, Inc.Inventors: Michael Joseph Gerace, Yasminka S. Landaburu, Sevilla C. Gamboa
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Patent number: 5840797Abstract: A light weight, vibration-damping composition having effective amounts of at least one butyl rubber, at least one tackifying resin, at least one pigment and substantially spherical microspheres is disclosed. The present composition has a specific gravity of about 1.0 to 1.2 and has effective damping effects at low temperatures as well as temperatures up to about 60.degree. C. This composition is effective for use in the transportation industry, the building industry, the aerospace industry and the appliance industry.Type: GrantFiled: September 16, 1996Date of Patent: November 24, 1998Assignee: H. B. Fuller Licensing & Financing, Inc.Inventor: Raj V. Singh
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Patent number: 5780537Abstract: The present invention relates to a silica-filled rubber composition reinforced with a combination of silica and a mixture of two defined carbon blacks and to pneumatic tires having treads comprised of such rubber composition.Type: GrantFiled: August 21, 1997Date of Patent: July 14, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: Richard Robinson Smith, Kevin James Pyle, William Paul Francik, Paul Harry Sandstrom
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Patent number: 5684077Abstract: A composition suitable for use in producing mold curing elements is provided. The composition comprises a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene; a filler such as carbon black, a process oil, and a curing agent. A curing element comprising the composition is also provided.Type: GrantFiled: May 12, 1995Date of Patent: November 4, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Donald Sheley Tracey, Irwin Jerome Gardner, Bernard Jean Costemalle
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Patent number: 5641820Abstract: The present invention relates to silica-filled rubber compositions containing dialkyleneamide polysulfides of the formula ##STR1## where R.sup.1 is independently selected from alkylene groups having 1 to 18 carbon atoms and x is an integer of from 2 to 7.Type: GrantFiled: December 26, 1995Date of Patent: June 24, 1997Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson Gibson Wideman, Paul Harry Sandstrom
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Patent number: 5610228Abstract: An anionic polymerization initiator includes a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A method of preparing an anionic polymerization initiator includes reacting an excess of a cyclic secondary amine with a conjugated diene to form an adduct; and, reacting the adduct with an organolithium compound. A method of preparing a polymer includes forming a solution of one or more anionically polymerizable monomers in a hydrocarbon solvent; and, polymerizing the monomer with an anionic polymerization initiator comprising a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A functionalized polymer includes the termination product of a living polymer having the general formula AYLi, wherein A is a functional group derived from an anionic polymerization initiator; and, Y is a divalent polymer radical; wherein the anionic polymerization initiator is a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene.Type: GrantFiled: June 6, 1995Date of Patent: March 11, 1997Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr.
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Patent number: 5578671Abstract: This invention relates to non-aqueous, indefinitely conformable, halogen free, intumescent putty useful in an opening as a firestop material to deter the spread of fire, smoke, and vapors during a fire.Type: GrantFiled: December 6, 1995Date of Patent: November 26, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventor: Walton W. Welna
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Patent number: 5569516Abstract: A thermoplastic elastomer consisting essentially of a copolymer comprising a mixture of ethylene; one or more alpha-olefins having 3 to 12 carbon atoms; and, optionally, a diene, said copolymer being in an uncrosslinked state and having a crystallinity in the range of about 2 to about 40 percent by weight based on the weight of the copolymer wherein about 15 to about 85 percent by weight of the crystallinity melts at a temperature above 80.degree. C.; about 15 to about 85 percent by weight of the crystallinity melts at a temperature below 80.degree. C.; and the crystalline melting temperatures differ by at least about 30.degree. C.Type: GrantFiled: March 3, 1995Date of Patent: October 29, 1996Inventors: Arnis U. Paeglis, Robert L. Boysen, Timothy R. Lynn, Jeffrey D. Collins
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Patent number: 5559169Abstract: A rubber composition prepared by the process comprising mixing 100 parts by weight of a rubber selected from EPDM, HNBR, and butyl rubber, and 10 to 300 parts by weight of a carbon black product having an attached organic group. The organic group has the formula --Ar--S.sub.n --Ar'-- in which Ar and Ar' are arylene groups or --Ar--S.sub.n --Ar" in which Ar is an arylene group, Ar" is an aryl group and n is 1 to 8.Type: GrantFiled: December 15, 1994Date of Patent: September 24, 1996Assignee: Cabot CorporationInventors: James A. Belmont, Thomas F. Reed
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Patent number: 5418276Abstract: There are disclosed a graft copolymer formed by grafting a styrenic monomer onto a high polymer having double bonds in the side chain to constitute highly syndiotactic polystyrenic chain as the graft component, the graft copolymer having a content of graft component of 0.005 to 99% by weight and a reduced viscosity of 0.01 to 30 dl/g as measured at a concentration of 0.05 g/dl in 1,2,4-trichlorobenzene at 135.degree. C. or a melt index of 0.001 to 500 g/10 minutes as measured at 300.degree. C. under a load of 2.16 kg; a process for efficiently producing the above graft copolymer using a catalyst comprising specific components; and a resin composition comprising the above graft copolymer, a highly syndiotactic styrenic polymer or other thermoplastic resin and, when necessary, an inorganic or organic filler. The above graft copolymer and resin composition are excellent in resistance to heat and chemicals, electrical properties, moldability, compatibility, impact resistance, etc.Type: GrantFiled: July 26, 1994Date of Patent: May 23, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Shuji Machida, Noriyuki Tani
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Patent number: 5407991Abstract: The invention provides an olefinic thermoplastic elastomer composition which is excellent in flexibility, processability into sheet and appearance of the resulting sheet and which is able to substitute for flexible polyvinyl chloride. The invention further provides a covering material for industrial parts comprising said composition and a laminate comprising said covering material.The composition comprises a partially crosslinked thermoplastic elastomer I containing an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a Mooney viscosity of 200-350 or the thermoplastic elastomer I and a partially crosslinked thermoplastic elastomer II containing an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a Mooney viscosity of 120 or higher and lower than 200 and the composition has a specific viscoelastic characteristics.Type: GrantFiled: October 26, 1993Date of Patent: April 18, 1995Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tadashi Hikasa, Koji Yamashita, Satoru Hosoda, Kiyoshi Mitsui, Yuji Kanda
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Patent number: 5386864Abstract: A composition suitable for use in producing a tire innerliner is provided. The composition comprises a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene; carbon black, and a plasticizer oil. A vulcanized tire comprising an innerliner made from the composition is also provided.Type: GrantFiled: April 26, 1994Date of Patent: February 7, 1995Assignee: Exxon Chemical Patents Inc.Inventors: Bernard J. Costemalle, James V. Fusco
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Patent number: 5346987Abstract: In accordance with the present invention, there is provided a bubble-containing ethylene/.alpha.-olefin rubber excellent in kneadability, characterized in that the ethylene/.alpha.-olefin rubber prepared by copolymerization of 50-95 mol % of ethylene, 5-50 mol % of .alpha.-olefin having at least 3 carbon atoms and 0-10 mol % of non-conjugated polyene contains 5-1000 parts by volume, based on 100 parts by volume of said rubber, of bubbles and has a water absorption volume as measured in accordance with ASTM D 1506 of less than 20% by volume of the total bubble volume.Type: GrantFiled: September 21, 1992Date of Patent: September 13, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Takashi Nakahara, Toshiaki Kimura, Takashi Mishima
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Patent number: 5333662Abstract: A composition suitable for use in producing a tire innerliner is provided. The composition comprises a halogencontaining copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a paraalkylstyrene; carbon black, and a plasticizer oil. A vulcanized tire comprising an innerliner made from the composition is also provided.Type: GrantFiled: July 21, 1992Date of Patent: August 2, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Bernard J. Costemalle, James V. Fusco
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Patent number: 5324758Abstract: A vibration damping material of asphalt cement comprising a) 60-90 parts by weight of asphalt cement: b) 10-30 parts by weight of thermoplastic rubber: and c) 0-20 parts by weight of tacky producer. A total sum of weight of a), b) and c) is 100 parts by weight. A penetration of the vibration damping material falls in a range of 35 to 140.Type: GrantFiled: November 30, 1992Date of Patent: June 28, 1994Assignees: Sohwa Shell Sekiyu Kabushiki Kaisha, Shimizu Construction Co., Ltd.Inventors: Masaaki Takahashi, Yasuo Soga, Kazuyoshi Iatagaki, Yutaka Fujita, Yutaka Nakamura
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Patent number: 5317057Abstract: A (halomethyl arene)-modified elastomer is made by reacting a lithium terminated elastomer intermediate with the halogen atoms of a halomethyl vinyl arene compound. A road-contacting tread component for a pneumatic tire is fabricated from vulcanized elastomer made by vulcanizing an elastomer composition of a (halomethyl arene)-modified elastomer, a carbon black reinforcing agent, and a sulfur-based vulcanizing system. A process for making a (halomethyl arene)-modified elastomer includes polymerizing at least one diene monomer with a lithium-containing initiator, capping the lithium terminated elastomer by reaction with a halomethyl arene compound, and recovering the modified elastomer.Type: GrantFiled: December 30, 1992Date of Patent: May 31, 1994Assignee: Bridgestone CorporationInventors: James E. Hall, William L. Hergenrother, James Oziomek
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Patent number: 5317056Abstract: A substantially nonthixotropic composition capable of minimizing the amount of airborne asbestos particles released during removal of asbestos from a structural unit and encapsulating the removed asbestos to permanently prevent the release of airborne asbestos particles. The composition includes (i) a major proportion of water, (ii) a nonionic-surfactant-stabilized latex, such as a latex of styrene butyl rubber, having a viscosity of less than about 300 cps and a maximum particle size of less than about 0.4 microns, (iii) sufficient nonionic surfactant to reduce the surface tension of the composition to less than about 40 dynes per cm, and (iv) a cationic surfactant. Optionally, the composition may further include a defoamant, a corrosion inhibitor, a pH buffering agent, a freezing point depressant and/or a dye.Type: GrantFiled: April 18, 1991Date of Patent: May 31, 1994Assignee: H.B. Fuller CompanyInventor: Vern H. Batdorf