Solid Polymer Derived From Ethylenic Reactants Only, At Least One Of Which Is A Hydrocarbon Other Than Ethylene Patents (Class 524/71)
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Patent number: 6372875Abstract: The present invention relates to a process for the preparation of polyurethane resins, in which, in an ester as solvent, a) at least one compound having 2 hydroxyl and/or amino groups, b) at least one di- and/or polyisocyanate, c) at least one compound containing 2 groups which are reactive toward isocyanate groups, these compounds containing, at least in part, at least one group capable of forming anions which is neutralized before or after incorporation of component (c) into the polyurethane molecule, and d) at least one compound having at least 3 hydroxyl and/or amino groups are used to prepare a polyurethane resin, preferably using components (a), (b) and (c) to prepare an intermediate which has terminal isocyanate groups and at least some of whose free isocyanate groups are subsequently reacted with component (d), characterized in that ethoxyethyl propionate is employed as solvent.Type: GrantFiled: January 22, 1996Date of Patent: April 16, 2002Assignee: BASF Coatings AGInventors: Bernd Mayer, Michael Grabbe, Heinz Peter Rink, Uwe Meisenburg
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Patent number: 6372882Abstract: The present invention is a method of producing substantially dry water insoluble polymers from poly alkyl esters of vinylic monomers for use in a method for the clarification of red mud-containing liquors generated in the Bayer process for the recovery of alumina from bauxite ore. The polymers can be either homopolymers, copolymers or terpolymers. Preferably, the dried emulsion polymers are high molecular weight polymers of poly(methyl acrylate), poly(methyl acrylate/acrylic acid), poly(vinyl acetate/acrylic acid/methyl acrylate), poly(t-butyl methacrylate/acrylic acid/methyl acrylate) and poly(t-butyl acrylate/acrylic acid/methyl acrylate).Type: GrantFiled: April 3, 2000Date of Patent: April 16, 2002Assignee: Nalco Chemical CompanyInventors: Everett C. Phillips, Ronald J. Allain
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Patent number: 6359033Abstract: A paving composition comprises a mixture of about 90 to 99.5 wt. % of an asphaltic material and about 0.5 to 10 wt. % of solid particles each encapsulated with a cross-linked polymer, the encapsulated particles being uniformly dispersed in the asphaltic material. The encapsulated particles have a particle-to-polymer weight ratio so as to provide a density match between the encapsulated particles and the asphaltic material. The paving composition according to the invention has a higher complex viscosity at high temperatures (60° C.) and is more ductile at low temperatures (−15° C.) in comparison with the base asphaltic material. Moreover, the composition is completely stable at elevated temperatures (160° C.) or during long periods of storage.Type: GrantFiled: July 17, 2000Date of Patent: March 19, 2002Assignee: Universite Laval, Cite UniversitaireInventors: Abdellatif Ait-Kadi, Ali Akbar Yousefi
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Patent number: 6348525Abstract: The present invention relates to the coagglomeration of random vinyl substituted aromatic/C4-C6 conjugated diolefin polymers With sulfur. Said coagglomerate is storage stable and easily blended with asphalt under a variety of mixing conditions. Further, polymer/asphalt blends prepared with the sulfur coagglomerated polymers show improved storage stability against phase separation.Type: GrantFiled: July 6, 2000Date of Patent: February 19, 2002Assignee: BASF CorporationInventors: Koichi Takamura, Paul Velasco, Peter Blanpain, John Cheng, Heinz Plaumann, Richard W. Liu, Wayne Millican, Barry Baughman
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Patent number: 6346561Abstract: The present invention is a recipe and method for combining Gilsonite and other asphaltites with curative elastomers that are powder granular form and which are added to asphalt. Second recipe and method is disclosed to create a dry liquid concentrate comprised of cured elastomers in combination with tall oil or other fatty acids and may also include Gilsonite to be added to asphalt.Type: GrantFiled: July 27, 2000Date of Patent: February 12, 2002Assignee: Texas Encore Materials, Inc.Inventor: John D. Osborn
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Patent number: 6326421Abstract: A pressure-sensitive adhesive material made of a weakly elastic mixture comprising a continuous phase formed essentially from a physically cross-linked solid rubber, which comprises a blend of A-B-A block copolymer, such as a styrene-isoprene-styrene block copolymer and a diblock copolymer such as styrene-butadiene, styrene-isoprene or a hydrogenated styrene-diene copolymer such as styrenel/etyhlene butylene, a compatible tackifying resin and a low-molecular weight polyisobutylene, optionally modified by butyl rubber, and a discontinuous phase comprising one or more hydrocolloids that are soluble and/or swellable in water.Type: GrantFiled: June 5, 2000Date of Patent: December 4, 2001Assignee: Avery Dennison CorporationInventor: Roger D. A. Lipman
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Poly (arylene ether) composition, method for the preparation thereof, and articles derived therefrom
Publication number: 20010036981Abstract: A composition comprises a bitumen and a poly(arylene ether) having an intrinsic viscosity less than 0.40 deciliters per gram. The composition exhibits high softening and flow temperatures, and high hardness.Type: ApplicationFiled: February 13, 2001Publication date: November 1, 2001Inventors: Adrianus J.F.M. Braat, Amy Rene Freshour, Hua Guo, Rene De Jongh, Juraj Liska -
Patent number: 6310122Abstract: The present invention provides a method for preparing an asphalt and thermoplastic elastomer composition. The process comprises heating an asphalt cut in a stirred tank to a temperature sufficient to allow the stirring of the asphalt in the tank. A thermoplastic elastomer or rubber is added to the asphalt while continuing to stir the asphalt. The mixture is stirred at a speed and for a period of time sufficient to increase the distribution of the elastomer into the asphalt. The stirring speed is reduced and the temperature is increased to add an oil dispersion or aqueous emulsion of crosslinking agents to the tank. Stirring is continued for a period of time sufficient to improve the distribution of the crosslinking agent dispersion in the asphalt.Type: GrantFiled: September 3, 1999Date of Patent: October 30, 2001Assignee: Fina Technology, Inc.Inventors: James R. Butler, Kevin P. Kelly
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Patent number: 6218449Abstract: The invention provides a method comprising contacting, between 100° C. and 230° C. and under agitation, an elastomer, a functionalising agent and optionally, a peroxide compound. The functionalising agent is a thiolcarboxylic acid polyester or a reaction product of a thiolcarboxylic acid or ester with ethylene sulphide. The functionalised elastomer can also be pre-formed, then incorporated into the bitumen. The resulting compositions are usable directly or after dilution, for forming bituminous binders to produce surfacing, coating and waterproofing materials.Type: GrantFiled: April 12, 1999Date of Patent: April 17, 2001Assignee: Elf Antar FranceInventors: Jean-Pascal Planche, Paul Maldonado, Bernard Neff, Thierry Senninger, Annie Zins, St{overscore (e)}phane Drouilhet
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Patent number: 6214908Abstract: A composition comprising a binder and a residue wherein the residue comprises a blend of polypropylene, styrene butadiene rubber and calcium carbonate. The residue is a novel material derived as a coproduct from the medium-pressure depolymerization of nylon 6 carpet. The compositions are useful as road asphalt, asphalt roof membranes, molding compounds, and plastic lumber such as palisades and spacers.Type: GrantFiled: July 19, 1999Date of Patent: April 10, 2001Assignee: AlliedSignal Inc.Inventors: Kwok Wai Lem, Alan Letton, Thomas Paul John Izod, Francis Stephen Lupton, William Brian Bedwell
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Patent number: 6191197Abstract: There are disclosed a gel or polymer composition which comprises 100 parts by weight of a polymer blend component comprising 1 to 90% by weight of a poly(vinyl aromatic hydrocarbon) polymer having a syndiotactic configuration and 99 to 10% by weight of a rubbery elastomer and at least 30 parts by weight of an extender oil or a low molecular weight organic component. These gel compositions have super soft properties, heat resistance, and/or damping properties.Type: GrantFiled: September 23, 1996Date of Patent: February 20, 2001Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Xiao-Liang Luo, Frank J. Clark, Hideo Takeichi, James E. Hall, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Patent number: 6180697Abstract: The present invention provides a method for preparing an asphalt and thermoplastic elastomer composition. The process comprises heating an asphalt cut in a stirred tank to a temperature sufficient to allow the stirring of the asphalt in the tank. A thermoplastic elastomer or rubber is added to the asphalt while continuing to stir the asphalt. The mixture is stirred at a speed and for a period of time sufficient to increase the distribution of the elastomer into the asphalt. The stirring speed is reduced and the temperature is increased to add an oil dispersion of crosslinking agents to the tank. Stirring is continued for a period of time sufficient to improve the distribution of the crosslinking agent dispersion in the asphalt.Type: GrantFiled: September 4, 1999Date of Patent: January 30, 2001Assignee: Fina Technology, Inc.Inventors: Kevin P. Kelly, James R. Butler
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Patent number: 6136899Abstract: It has been determined that a specific type of emulsion SBR can be used to modify asphalt cement to greatly enhance the resistance to shoving, rutting and low temperature cracking of asphalt concretes made therewith. It has further been determined that this emulsion SBR is compatible with virtually all types of asphalt and that modified asphalt cements made therewith have extremely high levels of force ductility, tenacity and toughness.Type: GrantFiled: December 7, 1999Date of Patent: October 24, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Laurand Henry Lewandowski, Daniel Frederick Klemmensen
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Patent number: 6133351Abstract: A sulfur in oil in asphalt and polymer blend is disclosed. An asphalt and polymer blend is first prepared and then a slurry of solid sulfur in liquid oil added. Addition of a slurry of solid sulfur in oil or oil containing sulfur compounds, permits rapid and effective uniform dispersion of the sulfur component in the asphalt/polymer blend. Uneven mixing, which can occur when sulfur is separately added as a solid to the asphalt blend, is avoided. Polymer use is optimized because polymer matrix development (digestion/swelling) can be completed before cross-linking occurs. The method is safer because formation of explosive clouds of sulfur dust is avoided.Type: GrantFiled: December 16, 1999Date of Patent: October 17, 2000Assignee: Marathon Ashland Petroleum LLCInventor: Roger E. Hayner
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Patent number: 6130276Abstract: In a method of melting asphalt in a vessel, the molten asphalt normally emitting fumes, 0.2 weight percent to 6 weight percent of a polymer is added to the asphalt to reduce the visual opacity of the fumes by at least 25% over the same asphalt without the polymer. In another embodiment, the total emissions of benzene soluble suspended particulates is reduced by at least 15% over the same asphalt without the polymer. Preferably, the added polymer has a melt flow index of from 15 grams/10 minutes to 95 grams/10 minutes, and the added polymer reduces the visual opacity of the fumes by forming a skim on the upper surface of the molten asphalt.Type: GrantFiled: March 12, 1999Date of Patent: October 10, 2000Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Donn Roy Vermilion, Michael Richard Franzen, Richard T. Janicki, David Charles Trumbore, Jay W. Keating, Jorge Alberto Marzari
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Patent number: 6127461Abstract: The present invention relates to the coagglomeration of random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymers with sulfur. Said coagglomerate is storage stable and easily blended with asphalt under a variety of mixing conditions. Further, polymer/asphalt blends prepared with the sulfur coagglomerated polymers show improved storage stability against phase separation.Type: GrantFiled: October 28, 1998Date of Patent: October 3, 2000Assignee: BASF CorporationInventors: Koichi Takamura, Paul Velasco, Peter Blanpain, John Cheng, Heinz Plaumann, Richard Liu, Wayne Millican, Barry Baughman
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Patent number: 6120913Abstract: The present invention provides a roofing shingle which is comprised of a support material and a bituminous composition which comprises a bitumen component, less than 15% by weight of a block copolymer composition, based on total weight of block copolymer composition and bitumen component, and more than 40% by weight of a filler, based on total weight of block copolymer, bitumen component and filler, which block copolymer composition comprises at least one block of a conjugated diene and at least two blocks of a monovinylaromatic hydrocarbon, wherein the block copolymer composition has a vinyl content of at least 25% by weight based on the total diene content and optionally a diblock content of 25 wt % or less, and any diblock copolymer present has an apparent molecular weight which is in the range of from 60,000 to 170,000.Type: GrantFiled: April 23, 1998Date of Patent: September 19, 2000Assignee: Shell Oil CompanyInventors: Robert Quillin Kluttz, Gerardus Wilhelmus Jozef Heimerikx
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Patent number: 6107374Abstract: Bitumens can be blended with interpolymers prepared from least one olefin and at least one vinyl or vinylidene aromatic monomer and, optionally, at least one diene. The interpolymers prepared from monomers containing a diene are new compositions of matter. When the interpolymers prepared from monomers containing a diene are blended with a bitumen, the blends are crosslinkable.Type: GrantFiled: July 23, 1998Date of Patent: August 22, 2000Assignee: The Dow Chemical CompanyInventors: James C. Stevens, Francis J. Timmers, Arnold L. Gatzke, Corwin J. Bredeweg, Kevin W. McKay, William A. Gros, Charles F. Diehl
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Patent number: 6107373Abstract: A consumable container is molded from a composition comprising 40 to 90 weight % of an asphalt and 10 to 60 weight % of a polymer material, which advantageously can include a first polymer such as PP that imparts heat resistance and a second polymer such as EVA that imparts toughness and impact resistance. This molded asphalt/polymer material preferably has an unnotched Izod impact strength of at least 2 joules. The container is consumable--it can be melted along with roofing asphalt held in the container without adversely affecting the properties of the asphalt and without requiring undue mixing. The composition also can be used to reduce fumes normally emitted from a kettle of molten asphalt, e.g., as measured by a reduction of the visual opacity of the fumes by at least 25%, a reduction of the hydrocarbon emissions of the fumes by at least 20%, or a reduction of the total suspended particulates emissions of the fumes by at least 15%. The container may be used, e.g.Type: GrantFiled: September 30, 1997Date of Patent: August 22, 2000Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Richard T. Janicki, Donn R. Vermilion, Kevin P. Gallagher, Frederick H. Ponn, Michael R. Franzen, Jorge A. Marzari, Jay W. Keating, David C. Trumbore, Steven G. Harris, Edward Mirra, Jr.
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Patent number: 6087420Abstract: The invention provides a method for producing bitumen/polymer compositions which consists of contacting, between 100.degree. C. and 230.degree. C. and under agitation, a bitumen or a mixture of bitumens with at least one styrene and butadiene copolymer having a global butadiene content ranging between 50% and 95 wt. % and a content of butadiene 1,2 double-bond structural units ranging between 12% and 50 wt % of the copolymer, and, preferably, also a sulphuring coupling agent or a functionalizing agent. The bitumen/polymer compositions are usable, directly or after dilution, for forming bitumen/polymer binders for surfacing materials.Type: GrantFiled: December 18, 1998Date of Patent: July 11, 2000Assignee: Elf Antar FranceInventors: Jean-Pascal Planche, Annie Zins, Claude Lacour
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Patent number: 6074469Abstract: A paving asphalt composition for improving the durability and longevity of asphalt road surfaces is disclosed. The paving asphalt composition includes asphalt base stock, heavy residuum of re-refined motor oil, and a chemical modifier. The heavy residuum of re-refined motor oil preferably has an API gravity of at least about 12, a kinematic viscosity greater than about 400 centistokes at 140.degree. F., a flash point greater than about 400.degree. F. and a mass loss less than about 3%. The paving asphalt composition may also include a polymer. A method of forming the paving asphalt composition and a method of paving roads are also disclosed.Type: GrantFiled: May 1, 1998Date of Patent: June 13, 2000Assignee: Petro Source Refining PartnersInventors: James H. Collins, Glenn R. Jones
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Patent number: 6075077Abstract: The subject invention is directed to a composition comprising a polymer, comprising in polymerized form ethylene and at least one additional polymerizable monomer, prepared by polymerizing ethylene and said at least one addition polymerizable monomer in the presence of a catalyst comprising a recited cyclopentadienyl group-containing metal coordination complex and an activating cocatalyst, wherein said composition is an asphalt, bitumen, or adhesive composition.Type: GrantFiled: October 27, 1997Date of Patent: June 13, 2000Assignee: The Dow Chemical CompanyInventors: Francis J. Timmers, James C. Stevens
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Patent number: 6069194Abstract: A method and apparatus for packaging a low-fuming meltable asphalt composition which includes the introduction of pellets comprising one or more polymeric materials into molten asphalt flowed into a conventional container or carton.Type: GrantFiled: December 12, 1997Date of Patent: May 30, 2000Assignee: Owens Corning Fiberglass Technology, Inc.Inventors: Michael R. Franzen, Donn R. Vermilion, David C. Trumbore, Richard T. Janicki, Jeffrey W. Smith, Jay W. Keating, Jorge A. Marzari, Thomas C. Bitsky, Ron S. Bliss
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Patent number: 6060542Abstract: The invention provides a process for preparing a bitumen composition comprising blowing a mixture with an oxygen-containing gas which mixture comprises a bitumen having a penetration of less than 300 dmm (as measured by ASTM D 5 at 25.degree. C.), a thermoplastic rubber which is present in an amount of less than 10% w, and a bitumen blowing catalyst which is present in an amount of more than 0.5% w and up to 3% w, both based on total mixture; and bitumen compositions obtainable by such process.Type: GrantFiled: May 5, 1998Date of Patent: May 9, 2000Assignee: Shell Oil CompanyInventors: Gerrit Van Gooswilligen, Michael Christopher Phillips, Koen Steernberg
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Patent number: 6057390Abstract: A method is provided for improving high temperature performance grade properties of asphalt which comprises i) heating an asphalt cement to 200 to 500.degree. F. (93 to 260.degree. C.), ii) adding 1 to 10 wt. % crosslinkable polymer, e.g., styrene-butadiene-styrene triblock copolymer based on weight of said asphalt cement, iii) adding a useful temperature index (UTI) improving amount of dioxime(s) of 1,4-benzoquinone and its derivatives and optionally, free radical initiator, e.g., organic peroxide, and iv) mixing the resulting blend, thereby providing a paving asphalt having a greater useful temperature index (UTI) than a corresponding blend to which no dioxime is added. The invention further relates to asphalt compositions thus made and paving compositions containing these asphalt compositions.Type: GrantFiled: June 15, 1999Date of Patent: May 2, 2000Assignees: Ashland Inc., Marathon Ashland Petroleum LLCInventors: Roman Loza, Laurence G. Dammann, Roger E. Hayner, Patricia K. Doolin
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Patent number: 6046260Abstract: A zinc oxide dispersion for use in rubber compounds having at least 40, preferably 74-92, weight percent zinc oxide powder and at least five weight percent of a binder selected from the group consisting of asphalt and terpene tackifiers. The dispersion also preferably includes at least 0.5 weight percent stearifying agent such as stearic acid.Type: GrantFiled: January 13, 1998Date of Patent: April 4, 2000Assignee: Flow Polymers, Inc.Inventor: James W. Hoover
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Patent number: 6037398Abstract: SBR-SBS modified asphalt and aluminum compositions are especially adapted for cold application to roofs while providing more UV protection.Type: GrantFiled: March 24, 1998Date of Patent: March 14, 2000Assignee: Gardner Asphalt CorporationInventors: Michael L. Yap, Raymond T. Hyer, Barton J. Malina
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Patent number: 6025418Abstract: An elastomer is blended with bitumen, an alkaline compound is then added which is soluble in the bitumen, and to this mixture is added 0.01 to 0.1% by weight of a mixture of vulcanizing agents comprising elemental sulphur and a sulphur-containing derivative of the form: ##STR1## where R.sub.1 and R.sub.2 are C.sub.1 to C.sub.4 alkyl radicals or, together R.sub.1 and R.sub.2 have the formula ##STR2## and where M, which is optional, is Zn, Ba or Cu.Type: GrantFiled: February 13, 1997Date of Patent: February 15, 2000Assignee: Fina Research, S.A.Inventors: Frans Maurice Joseph Defoor, Jean-Philippe Hallet, Thierry Christian Coupin
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Patent number: 6020404Abstract: Bitumen/polymer compositions are provided containing a bitumen or a mixture of bitumens and, reckoned by weight of bitumen, 0.3% to 20% of at least one primary polymer selected among certain elastomers and plastomers and 0.01% to 12% of at least one olefinic polymer bearing epoxy or COOH groupings. The compositions are useful, directly or after dilution, to form bitumen/polymer binders for carrying out road surfacing, for coated materials or waterproof coatings.Type: GrantFiled: January 7, 1998Date of Patent: February 1, 2000Assignee: Elf Antar France Tour Elf-2 Place de la CoupoleInventors: Jean-Pascal Planche, Patrick Turello, Claude Lacour
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Patent number: 6011095Abstract: Bitumen/polymer compositions are produced by contacting, between 100.degree. C. and 230.degree. C., under agitation, one bitumen or a mixture of bitumens with at least one olefinic polymer bearing epoxy or COOH groupings, then by incorporating in the product, an acid additive while the whole mixture is agitated at a range between 100.degree. C. and 230.degree. C. for at least 10 minutes. The product, which is subjected to treatment by the acid additive may still contain one or several additional polymers, for instance of the elastomer type cross-linkable with sulphur, and even be subjected to sulphur cross-linking before treatment. The bitumen/polymer compositions are useful directly or after dilution, to form binders for carrying out surfacing operations.Type: GrantFiled: April 20, 1998Date of Patent: January 4, 2000Assignee: ELF Antar FranceInventors: Jean-Pascal Planche, Patrick Turello, Claude Lacour
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Patent number: 5998514Abstract: The present invention relates to random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymer modified asphalt mixtures wherein the modifier is a keto-containing amide such as diacetone acrylamide (DAAM), an oxazoline containing copolymer, and an ethoxylated trimethylolpropane triacrylate.Type: GrantFiled: December 17, 1998Date of Patent: December 7, 1999Assignee: BASF CorporationInventors: John Tze-Chiang Cheng, Heinz Plaumann, Koichi Takamura, Arthur Barry Baughman
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Patent number: 5990203Abstract: The present invention relates to a method for improving the compatibility of random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymer/asphalt mixtures comprising adding a modifier to said random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymer/asphalt mixture selected from the group consisting of:(a) polymers containing an epoxy functionality(b) polymers containing a carboxyl functionality(c) monomers, oligomers, and polymers containing an amine functionality;(d) monomers, oligomers, and polymers containing an ester functionality; or mixtures thereof.Type: GrantFiled: May 4, 1998Date of Patent: November 23, 1999Assignee: BASF CorporationInventors: John Tze-Chiang Cheng, Heinz Plaumann, Koichi Takamura, Arthur Barry Baughmann, Wai-chun Richard Liu
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Patent number: 5990206Abstract: Preparation of an asphalt composition using an asphalt modifier composition comprising at least one member selected from the group consisting of rubber-base modifiers and resin-base modifiers and a phosphorus compound permits the modifier to be satisfactorily dissolved in asphalt. Further, when paving is conducted by using a composition for paving prepared with such the asphalt composition, the adhesion of asphalt to an aggregate is high, and the resultant pavement has markedly improved in rutting resistance and wearing resistance. Therefore, such the pavement has a prolonged service life.Type: GrantFiled: November 13, 1997Date of Patent: November 23, 1999Assignee: Kao CorporationInventors: Shingo Tanaka, Takayuki Ikenaga
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Patent number: 5961709Abstract: An environmentally improved asphalt paving composition which contains a solvent-precipitated asphaltene, such as solvent deasphalting bottoms, and a viscosity reducing amount of paraffinic fluxing component, e.g., 325 Neutral Oil.Type: GrantFiled: February 19, 1998Date of Patent: October 5, 1999Assignee: Marathon Ashland Petroleum LLCInventors: Roger E. Hayner, Patricia K. Doolin, James F. Hoffman, Robert H. Wombles
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Patent number: 5959007Abstract: Stable rubberized bitumen concentrates are prepared by initially forming a mass comprising bitumen and crumb rubber particles in an amount of at least about 15 wt % of the mass with the crumb rubber being swollen in-situ, and applying shear and temperature conditions to the mass to dissociate the vulcanizate network of the rubber particles and to incorporate the digested vulcanizate into the bitumen. The stable rubberized bitumen concentrate is stable against sedimentation of rubber particles both following storage of the concentrate at about 320.degree. F. for 48 hours and dilution to a lower concentration in the ASTM solubility test.Type: GrantFiled: November 20, 1997Date of Patent: September 28, 1999Assignee: Polyphalt L.L.C.Inventor: Zhi-Zhong Liang
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Patent number: 5948827Abstract: A rubber composition obtained by recycling scrap material and adapted for use as raw material for manufacturing products for building, automobile accessory, and footwear industries possibly as a replacement for wood, zinc sheet, fiber cement, plastic and any other rigid or semirigid material. The composition includes from about 66% to about 77% of particles of ground tires having a size between about 18 and about 30 microns, from about 15% to about 22% of particles of ground plastic material having a size between about 18 and about 30 microns, and from about 8% to about 12% of a solution of acid with toluene or methyl isobutyl ketone. The acid may be lactic acid, phosphoric acid or formic acid. The percentage of acid in the solution by volume is from about 12% to about 50% and the percentages of toluene or methyl isobutyl ketone in the solution by volume is from about 50% to about 88%.Type: GrantFiled: January 13, 1997Date of Patent: September 7, 1999Inventors: Joaquin Lupo, Luis Jacinto Tre
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Patent number: 5938832Abstract: An improved asphalt having enhanced settling properties. The asphalt includes crumb rubber particles which have been treated to produce a greater number of carboxylic sites on the surface of the crumb rubber. These carboxylic sites interact with the functional groups in the asphalt, resulting in a homogeneous mixture having improved separation characteristics as well as the improved rheological properties due to the inclusion of the crumb rubber particles.Type: GrantFiled: February 21, 1998Date of Patent: August 17, 1999Inventor: Ghulam Mohammed Memon
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Patent number: 5936015Abstract: An improved rubber-modified asphalt paving binder is provided by incorporating a minor proportion of a polyoctenamer into the heated liquid asphalt cement. The binder can contain from about 80% to about 99% by weight of asphalt cement, from about 0.5% to about 20% by weight of crumb rubber, such as ground tire rubber ("GTR"), and from about 0.01% to about 10% by weight of the polyoctenamer. The polyoctenamer can be of the trans- or cis- form, such as that sold under the brand name VESTENAMER.RTM.. A paving concrete is provided by adding the improved asphalt binder, with mixing, to conventional aggregate materials, which materials can also contain additional crumb rubber.Type: GrantFiled: October 16, 1998Date of Patent: August 10, 1999Assignee: Creanova Inc.Inventor: Bernard J. Burns
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Patent number: 5851276Abstract: An improved asphalt having enhanced settling properties. The asphalt includes crumb rubber particles which have been treated to produce a greater number of carboxylic sites on the surface of the crumb rubber. These carboxylic sites interact with the functional groups in the asphalt, resulting in a homogeneous mixture having improved separation characteristics as well as the improved rheological properties due to the inclusion of the crumb rubber particles.Type: GrantFiled: September 3, 1997Date of Patent: December 22, 1998Assignee: The United States of America as represented by the Secretary of TransportationInventor: G. Mohammed Memon
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Patent number: 5840109Abstract: Mixtures containing bitumen and at least one polymer selected from (A) an essentially atactic propylene homopolymer, (B) an amorphous propylene copolymer with a C.sub.4 -C.sub.10 .alpha.-olefin, and (C) an amorphous propylene copolymer with ethylene; the polymers (A) and (B) having the following characteristics:intrinsic viscosity (.eta.): greater than 1 dl/g;% (r)-% (m)>0, where % (r) is the percentage of the syndiotactic dyads, and % (m) is the percentage of the isotactic dyads;less than 2% of the CH.sub.2 groups are contained in the (CH.sub.2).sub.n sequences where n.gtoreq.2; andBernoulli index (B)=1.+-.0.2;the copolymer (C) having the following characteristics:the quantity of propylene in the copolymer (%P), expressed in mole percentage, and the EPE/(EPE+PPE+PPP) triad ratio satisfy the following equation:0.01 % P+EPE/(EPE+PPE+PPP).gtoreq.1;and less than 2% of the CH.sub.2 groups are contained in the (CH.sub.2).sub.n sequences where n is an even number.Type: GrantFiled: February 21, 1997Date of Patent: November 24, 1998Assignee: Montell North America Inc.Inventors: Vittorio Braga, Franco Sartori
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Patent number: 5811477Abstract: A method of preparing an asphalt emulsion composition comprises mixing an aqueous asphalt emulsion, water, latex rubber, and a solids mix composition comprising reclaimed rubber particles passing through a 40 mesh U.S. series sieve and one or more solid addends selected from the group consisting of a rheological agent, gilsonite, carbon black, surface active clay and polymer fibers, and mixtures thereof and wherein the ratio of latex rubber:rubber particles is between about 1:1 and about 1:10, by weight, respectively, and mixing the components at substantially ambient temperature.Type: GrantFiled: July 26, 1996Date of Patent: September 22, 1998Assignee: Michael V. BurrisInventors: Michael V. Burris, Bryan B. Burris
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Patent number: 5756565Abstract: Non-gellable, high temperature storage-stable bitumen/polymer compositions are provided and which are produced by stirring a sulphur-cross-linkable elastomer, an antigelling adjuvant and a sulphur-donating coupling agent into a bitumen or bitumen mixture at 100.degree.-230.degree. C. The antigelling adjuvant has the formula R--X wherein R is a C.sub.2-50 monovalent organic radical and X is a carboxylic acid, sulfonic acid or phosphoric acid group. The bitumen-polymer compositions may be used directly or in diluted form in a bitumen or bitumen mixture to form bitumen/polymer binders for producing road surfaces, coating materials or sealing materials.Type: GrantFiled: November 13, 1995Date of Patent: May 26, 1998Assignee: Elf Antar FranceInventors: Laurent Germanaud, Jean-Pascal Planche, Trung Kiet Phung
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Patent number: 5750598Abstract: The bitumen/polymer composition comprises a bitumen, an elastomeric polymer vulcanisable with sulphur in an amount of 0.5 to 20% by weight of the bitumen, a sulphur-donating vulcanising agent, a vulcanisation accelerator and a viscosity-reducing agent chosen from water and hydrocarbon oils. The vulcanisation accelerator present in the composition consists of one or more vulcanisation accelerators active at temperatures below 100.degree. C., and the viscosity-reducing agent is used in an amount suitable for rendering the composition liquid at temperatures below 100.degree. C.Type: GrantFiled: March 6, 1995Date of Patent: May 12, 1998Assignee: Eli FranceInventors: Dennis Krivohlavek, Gayle King, Jean-Pascal Planche
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Patent number: 5719216Abstract: A method for improving the storage stability of a polymer-modified bituminous composition, which comprises using as a compatibilizing agent a bis(nitroaryl) disulphide and/or nitroaryl aryl disulphide. The invention further provides a polymer-modified bituminous composition comprising such a compatibilizing agent.Type: GrantFiled: November 21, 1996Date of Patent: February 17, 1998Assignee: Shell Oil CompanyInventors: Wilhelmina Elisabeth Maria Schermer, Koen Steernberg
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Patent number: 5703148Abstract: An asphalt-polymer composition containing:a) at least 25 to 97 wt % of an asphalt,b) at least 1 to 25 wt % of a polymer, andc) at least 2 to 50 wt % of aromatic compound(s),whereinthe aromatic compound(s) is present in an amount greater than 2 wt %,the at least one aromatic compound(s) and the polymer are present in amounts such that the ratio of amount present of aromatic compound to amount present of polymer is from 0.5 to 10, andthe composition has a FRAASS point of less than or equal to -13.degree. C. and a storage stability defined by a".DELTA. ring-and-ball" and a ".DELTA. penetrability" of less than or equal to 5. Also a process for preparing such asphalt-polymer composition including mixing the asphalt, the polymer and the aromatic compound at a temperature from 190.degree. to 300.degree. C. for a period of time preferably exceeding 30 minutes. The asphalt-polymer composition can be used as a road asphalt, emulsion or surface coating.Type: GrantFiled: March 16, 1995Date of Patent: December 30, 1997Assignee: Total Raffinage Distribution S.A.Inventors: Yannick Jolivet, Michel Malot, Didier Jamois
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Patent number: 5672642Abstract: The invention is a process for the preparation of storage stable asphalt-polymer blends, comprising:a. contacting sulfur with asphalt; andb. contacting a polymer with the sulfur-asphalt mixture under conditions such that a compatible and homogeneous polymer-asphalt blend is formed.The process of the invention allows the preparation of compatible asphalt-polymer blends that are more stable while utilizing a more cost efficient, faster process and still maintaining the desired physical properties of good weatherability and creep resistance.Type: GrantFiled: February 29, 1996Date of Patent: September 30, 1997Assignee: The Dow Chemical CompanyInventor: William A. Gros
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Patent number: 5651994Abstract: An elastic paving material includes a mixture of 90-50% by weight of fibrous rubber chips each having a length of 3-30 mm and a diameter of 0.3-3 mm, and 10-50% by weight of crushed pieces of golf balls having a particle size of 3-50 mesh. A curable liquid binder is added so as to bond the fibrous rubber chips and the crushed pieces of golf balls. Another elastic paving material includes only pieces of golf balls having a particle size of 3-50 mesh, and a curable liquid binder is added thereto so as to bond the pieces of golf balls. The crushed pieces of golf balls have a color different from that of the fibrous rubber chips, consist of particles having various colors, or are colored in advance.Type: GrantFiled: July 24, 1996Date of Patent: July 29, 1997Assignee: Bridgestone Sports Co., Ltd.Inventors: Yoshimichi Hara, Masayuki Otake, Takayuki Niikura
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Patent number: 5631313Abstract: A new stable liquid suspension of a non soluble particulate material, and a method of preparation of same are provided. Such compositions comprise at least one oil, one oil soluble resin and a non oil soluble particulate material mixed together In the appropriate quantities and conditions.Type: GrantFiled: November 14, 1991Date of Patent: May 20, 1997Assignee: Phillips Petroleum CompanyInventors: Marshall D. Bishop, John E. Hostettler
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Patent number: 5627225Abstract: This invention provides for novel road paving binder compositions and the method of making them. One embodiment is a road paving binder composition of a storage stable blend of a sulfonated, unhydrogenated random copolymer of styrene and butadiene having a sulfonation level of from 1 to 100 meq S0.sub.3 H/100 g of polymer and a sulfonated asphalt. Another is a method of making a storage stable polymer modified asphalt composition by combining a sulfonated unhydrogenated random styrene butadiene copolymer having a sulfonation level of from about 1 to 100 meq S0.sub.3 H per 100 g of polymer and a sulfonated asphalt at a temperature of at least about 180.degree. C. to produce a storage stable polymer modified asphalt. Yet another is a method of making a storage stable polymer modified asphalt by combining a sulfonated unhydrogenated random styrene and butadiene copolymer having a sulfonation level of from about 1 to 100 meq S0.sub.Type: GrantFiled: October 31, 1995Date of Patent: May 6, 1997Assignee: Exxon Research and Engineering CompanyInventors: Martin L. Gorbaty, Christian G. Lenoble, Nicholas C. Nahas, Dennis G. Peiffer
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Patent number: 5618862Abstract: Bitumen/polymer compositions with a broadened plasticity range are produced by stirring together a bitumen or bitumen mixture and a sulphur-cross-linkable elastomer as well as a sulphur-donating coupling agent at 100.degree.-230.degree. C. to give a cross-lined bitumen/polymer composition, stirring an acid or acid anhydride inorganic admixture into the composition at 100.degree.-230.degree. C., and maintaining the resulting reaction medium at 100.degree.-230.degree. C. while stirring for at least 20 minutes. Such bitumen/polymer compositions may be used directly or in dilute form to provide bituminous binders for road surfaces, coated materials and sealing coatings.Type: GrantFiled: March 11, 1996Date of Patent: April 8, 1997Assignee: Elf Antar FranceInventors: Laurent Germanaud, Jean Pascal Planche, Patrick Turello