Bituminous Emulsion Patents (Class 106/277)
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Patent number: 5178674Abstract: Compositions of matter are disclosed which act as cure rate accelerators for bituminous emulsion-aggregate slurries which compositions are formed as the reaction products of an excess of polycarboxylic acid with a polyamine selected from fatty amines, fatty propane diamines, fatty amidoamines, and fatty imidazolines.Type: GrantFiled: January 9, 1992Date of Patent: January 12, 1993Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 5173115Abstract: A process for the fixation of hydrocarbons found in contaminated oily soil. The contaminated oily soil is used as a component in a cold mix asphaltic concrete. The soil is mixed with asphalt roof cuttings containing fibers and mineral aggregate to form a mixture. This mixture is coated with a cold mix emulsion to form an asphaltic concrete. The hydrocarbons do not leach from the set concrete.Type: GrantFiled: July 8, 1991Date of Patent: December 22, 1992Assignee: American Reclamation CorporationInventors: John J. Glynn. Jr., Nathan Wiseblood
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Patent number: 5160453Abstract: Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of modified polyamine with certain plycarboxylic acids and anhydrides. The modified polyamines are obtained by reacting suitable polyalkylene amines with aldehydes, preferentially formaldehyde and glyoxal.Type: GrantFiled: February 21, 1989Date of Patent: November 3, 1992Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 5153026Abstract: A method and composition for chip sealing a roadway utilizing a coating containing a parent binding material. Stone chips are then spread onto the parent binding material to form a composite having an upper surface. A liquid composition is then applied over the upper surface of the composite. The liquid composition includes an emulsion of liquid asphalt, a lignosulfonic acid salt, and water.Type: GrantFiled: August 5, 1991Date of Patent: October 6, 1992Inventors: Wendell Reed, Jeffrey Reed
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Patent number: 5151456Abstract: The present invention relates to an asphalt-rubber emulsion useful as a joint and crack sealant that can be applied to concrete and asphalt at ambient temperatures, and to a method for producing same. The aqueous emulsion comprises a polymeric surfactant and the reaction product of an asphalt-elastomer mixture, a liquid rubber, and a peroxide cross-linking agent. The emulsion has a relatively high solids content and a relatively high rubber content.Type: GrantFiled: May 28, 1991Date of Patent: September 29, 1992Assignee: Koch Industries, Inc.Inventors: Samir F. Elias, Kevin Klausmeyer, Kurt Holland
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Patent number: 5137572Abstract: An emulsifier and method for its use in mixing grade emulsion systems of a chemical structure containing a tall oil and/or fatty acid portion, a hydrocarbon oxide portion, and a phosphate functionality. Variations in the components and the order of attachment compensate for variations in field conditions. The newly synthesized molecule may then be used to create mixing grade asphaltic emulsions.Type: GrantFiled: May 21, 1991Date of Patent: August 11, 1992Assignee: Asphalt Technology & Consulting, Inc.Inventor: Dennis Krivohlavek
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Patent number: 5120708Abstract: A water-based drilling fluid additive composition comprising a water soluble polyoxyalkylene compound selected from polyoxyalkylene glycols, monoalkylethers of polyoxyalkylene glycols, and mixtures thereof, which have a cloud point in the range from about 60.degree. F. to about 180.degree. F., in combination with a water dispersible particulate asphalt having an ASTM D-36 softening point of at least 290.degree. F., an ASTM D-5 penetration depth not exceeding about 10 mm, and a particulate size not exceeding more than about 10 percent retained on a 40 mesh U.S. screen.Type: GrantFiled: March 6, 1991Date of Patent: June 9, 1992Assignee: Baker Hughes IncorporatedInventors: Sidney Melear, John A. Guidroz, Jr., Gary Schlegel, William Micho
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Patent number: 5114483Abstract: A paving composition comprising about 80 to 97% by weight of an open-graded aggregate and about 3 to 20% asphalt, said composition being formed by successively mixing two asphalt-containing emulsions A and B with said aggretate wherein:emulsion A comprises about 40 to 75% by weight of a soft asphalt having a viscosity in the range of 50 to 1000 centistokes at 210.degree. F. and 0.05 to 5% by weight of a emulsifier, and water as a continuous phase of said emulsion to make up 100% by weight; andemulsion B comprises about 40 to 75% by weight of a hard asphalt having a penetration 5 to 25 dmm at 77.degree. F. and 0.05 to 5% by weight of a emulsifier, and water as a continuous phase of said emulsion to make up 100% by weight.Type: GrantFiled: July 14, 1988Date of Patent: May 19, 1992Assignee: Chevron Research and Technology CompanyInventor: Peter E. Graf
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Patent number: 5098604Abstract: New cation-active amine compositions, liquid at ambient temperature, which do not form concretions by prolonged maintenance at temperatures in the region of 0.degree. C., nor by exposure to the open air, and which do not contain solvents, comprising from 20 to 80% branched-chain alkyletheramines and 80 to 20% oxyalkylated alkylpolyamines. Application of their acid liquid solutions as emulsifying phases of road bitumen, and improved manufacturing process for road bitumen emulsions.Type: GrantFiled: November 16, 1989Date of Patent: March 24, 1992Assignee: Ceca, S.A.Inventors: Rene L. A. Brouard, Luc E. A. Navascues
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Patent number: 5096495Abstract: Compositions of matter are disclosed which act as cure rate accelerators for bituminous emulsion-aggregate slurries which compositions are formed as the reaction products of aminoethylpiperazine and either C.sub.22 -tricarboxylic acid or C.sub.21 -dicarboxylic acid in a molar ratio of from 0.5:1 to 1:1, respectively.Type: GrantFiled: December 6, 1989Date of Patent: March 17, 1992Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 5096494Abstract: Compositions of matter are disclosed which act as cure rate accelerators for bituminous emulsion-aggregate slurries which compositions are formed as the reaction products of aminoethylpiperazine and either C.sub.22 -tricarboxylic acid or C.sub.21 -dicarboxylic acid in a molar ratio of from 0.5:1 to 1:1, respectively.Type: GrantFiled: February 15, 1991Date of Patent: March 17, 1992Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 5091008Abstract: A polymer-modified bitumen (PmB) having improved elastic restoration and having a content of 0.5-20 wt. % of polymer components which polymer components are comprised to the extent of at least 20 wt. % of polyalkyl (meth)acrylates having molecular weights greater than 30,000, said polyalkyl (meth)acrylate being comprised of 50-99.8 wt. % of alkyl (meth)acrylates having alkyl groups of 8-26 C atoms, 0.1-2.8 wt. % of polymerizable carboxylic acids, 0.1-2.8 wt. % of polymerizable basic nitrogen compounds; and 0-49.8 wt. % of one or more other polymerizable compounds each having not more than one polymerizable double bond.Type: GrantFiled: May 31, 1990Date of Patent: February 25, 1992Assignee: Rohm GmbH Chemische FabrikInventors: Klaus-Dieter Lehmann, Michael Muller
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Patent number: 5089052Abstract: A method for emulsification of rock asphalt, the resulting low asphalt emulsion and low asphalt emulsion binder for aggregate is disclosed. Fine mesh rock asphalt is emulsified by using a hydrocarbon fluxing agent to sufficiently wet the rock asphalt to produce a fluid mixture, followed by addition of water, small amounts of surfactant and salts, heating the fluid mix while the mixture is being gently stirred. The rock asphalt emulsion can be formed from rock asphalts having low asphalt content, as low as 5, 6, or 7% by weight and greater. Depending on the rock asphalt ore source, the emulsion is comprised of varying amounts of hydrocarbon fluxing oils which are present in sufficient volume to form a fluid mix, from less than about 25% to greater than matching parts by volume of water, and lesser amounts of surfactants and salts. These emulsions have been found to be effective as binders for limestone aggregate coatings, seal, coats, pliable mats and other surprising applications.Type: GrantFiled: August 10, 1989Date of Patent: February 18, 1992Inventor: Allen C. Ludwig
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Patent number: 5088724Abstract: A substitute ground surface material comprising sand coated or treated with a binder comprising a free flowing extender oil with a viscosity transition below -5.degree. F., with a synthetic polymeric material such as styrene-butadiene-styrene co-polymer dissolved or dispersed in the oil. The binder comprises approximately 2% of the material which is an inert, discreet material permanently capable of being raked when laid in a layer upon a substrate. The material is laid on a suitable porous base to form a sports surface for a horse running track or the like.Type: GrantFiled: September 19, 1990Date of Patent: February 18, 1992Assignee: En-Tout-Cas plc.Inventors: Paul Hawkins, Robert J. Blythe
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Patent number: 5085701Abstract: A polymer-modified bitumen (PmB) having improved elastic restoration prepared by blending from 0.5-20 wt. % of a polymer material in bitumen, said polymer additive, which may be comprised of various polymers, being comprised of from 20-100 wt. % of a polyalkyl (meth)acrylate comprising monomer units as follows:50-100 wt. % of alkyl (meth)acrylates containing alkyl groups of 8-26 C atoms;0-30 wt. % of alkyl (meth)acrylates containing alkyl groups of 1-7 C atoms; and0-20 wt. % of other monomers, optionally containing functional groups;and said polymer having a molecular weight Mw>1,000,000, corresponding to a viscosity number .eta..sub.sp /c>120 ml/g as measured in chloroform at 20.degree. C.Type: GrantFiled: June 1, 1990Date of Patent: February 4, 1992Assignee: Rohm GmbH Chemische FabrikInventors: Michael Muller, Horst Pennewiss, Juergen Gebhardt
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Patent number: 5085704Abstract: Compositions of matter are disclosed which act as cure rate accelerators for bituminous emulsion-aggregate slurries which compositions are formed as the reaction products of aminoethylpiperazine and either C.sub.22 -tricarboxylic acid or C.sub.21 -dicarboxylic acid in a molar ratio of from 0.5:1 to 1:1, respectively.Type: GrantFiled: February 15, 1991Date of Patent: February 4, 1992Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 5085702Abstract: Compositions of matter are disclosed which act as cure rate accelerators for bituminous emulsion-aggregate slurries which compositions are formed as the reaction products of aminoethylpiperazine and either C.sub.22 -tricarboxylic acid or C.sub.21 -dicarboxylic acid in a molar ratio of from 0.5:1 to 1:1, respectively.Type: GrantFiled: February 15, 1991Date of Patent: February 4, 1992Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 5073297Abstract: Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of modified polyamide with certain polycarboxylic acids and anhydrides. The modified polyamines are obtained by reacting suitable polyalkylene amines with 1,2-unsaturated acids, able to undergo Michael addition of the amines across the double bonds resulting in amino acids which can undergo polymerization to low and high molecular weight amino polyamides.Type: GrantFiled: November 15, 1989Date of Patent: December 17, 1991Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 5059479Abstract: A pressure-sensitive adhesive emulsion composition, characterized in that it is a pressure-sensitive adhesive emulsion composition containing the ingredients (A) and (B) below; the content of ingredient (B) is set at 1-70 solid parts per 100 solid parts by weight of the emulsion composition.(A) A polymer derived from at least one compound selected from a group including alkyl acrylates, alkyl methacrylates, and vinyl compounds, and having a glass transition temperature in the range of -60.degree. C. to -30.degree. C.(B) A bituminous emulsifier with an average particle diameter of the emulsified particles of 0.5-3.0 .mu.m.Type: GrantFiled: December 29, 1989Date of Patent: October 22, 1991Assignee: National Starch and Chemical Investment Holding CorporationInventors: Hajime Yuyama, Fumio Maekawa, Kazuo Umekage
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Patent number: 5036013Abstract: A method is provided for converting coal to low molecular weight organic compounds comprising combining an aqueous solution of an aqueous-soluble polymeric coal substrate with a lignin peroxidase, oxygen and hydrogen peroxide. The invention is exemplified using the lignin peroxidase from Phanerochaete chrysosporium. Also provided are aqueous-soluble polymeric coal substrates suitable for lignin peroxidase-catalyzed depolymerization and methods of preparing such substrates. Finally, a method is provided for isolating the lignin peroxidase from mycelia-free, unconcentrated media of cultures of P. chrysosporium producing the enzyme.Type: GrantFiled: September 21, 1990Date of Patent: July 30, 1991Assignee: The Salk Institute Biotechnology/Industrial Associates, Inc.Inventors: Willis A. Wood, Lillian M. Wondrack
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Patent number: 5034060Abstract: Slurries are formed with cationic emulsions prepared by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of polyamine with certain polycarboxylic acids, which product is subsequently modified by reaction with from 10-30% of a member of the group consisting of acetic anhydride, phthalic anhydride, propylene carbonate, and styrene oxide.Type: GrantFiled: February 21, 1989Date of Patent: July 23, 1991Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 5024702Abstract: A soil or aggregate stabilizing agent is formed by mixing asphaltic emulsion, lignosulfonate and water. The agent is considered useful in a variety of applications, particularly road construction.Type: GrantFiled: February 9, 1989Date of Patent: June 18, 1991Inventors: Ludvik Mazuch, David R. Haughton
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Patent number: 5019168Abstract: A cationic emulsifier obtained from the reaction products of an alkyl phenol, polyamine, and formaldehyde or of an alkyl phenol, fatty acid/polyamine condensate, and formaldehyde and the uses of the emulsifier in cationic bituminous emulsions and paving slurry seal mixtures are disclosed.Type: GrantFiled: November 6, 1989Date of Patent: May 28, 1991Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 5008382Abstract: Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of a sugar-containing syrup with modified polyamine which is the reaction product of a polyamine with certain polycarboxylic acids and anhydrides.Type: GrantFiled: July 20, 1989Date of Patent: April 16, 1991Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 4997481Abstract: An cationic emulsifier obtained from the reaction products of an alkyl phenol, polyamine, and formaldehyde or of an alkyl phenol, fatty acid/polyamine condensate, and formaldehyde and the uses of the emulsifier in cationic bituminous emulsions and paving slurry seal mixtures are disclosed.Type: GrantFiled: August 28, 1989Date of Patent: March 5, 1991Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4995909Abstract: A cationic emulsifier obtained from the reaction products of an alkyl phenol, polyamine, and formaldehyde or of an alkyl phenol, fatty acid/polyamine condensate, and formaldehyde and the uses of the emulsifier in cationic bituminous emulsions and paving slurry seal mixtures are disclosed.Type: GrantFiled: August 28, 1989Date of Patent: February 26, 1991Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4990592Abstract: An anionic emulsifier obtained from the reaction products of an alkyl phenol, polyamine, and formaldehyde or of an alkyl phenol, fatty acid/polyamine condensate, and formaldehyde followed by the reaction of such products with acrylic acid, and the uses of the emulsifier in anionic bituminous emulsions and paving slurry seal mixtures are disclosed.Type: GrantFiled: November 27, 1989Date of Patent: February 5, 1991Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4990591Abstract: An anionic emulsifier obtained from the reaction products of an alkyl phenol, polyamine, and formaldehyde or of an alkyl phenol, fatty acid/polyamine condensate, and formaldehyde followed by the reaction of such products with acrylic acid, and the uses of the emulsifier in anionic bituminous emulsions and paving slurry seal mixtures are disclosed.Type: GrantFiled: April 7, 1989Date of Patent: February 5, 1991Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4990590Abstract: An anionic emulsifier obtained from the reaction products of an alkyl phenol, polyamine, and formaldehyde or of an alkyl phenol, fatty acid/polyamine condensate, and formaldehyde followed by the reaction of such products with acrylic acid, and the uses of the emulsifier in anionic bituminous emulsions and paving slurry seal mixtures are disclosed.Type: GrantFiled: November 27, 1989Date of Patent: February 5, 1991Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4976784Abstract: An cationic emulsifier obtained from the reaction products of an alkyl phenol, polyamine, and formaldehyde or of an alkyl phenol, fatty acid/polyamine condensate, and formaldehyde and the uses of the emulsifier in cationic bituminous emulsions and paving slurry seal mixtures are disclosed.Type: GrantFiled: August 28, 1989Date of Patent: December 11, 1990Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4970025Abstract: This invention provides cationic emulsions of bituminous binders of the bitumen/polymer type, formed by a dispersion of an organic phase of the binder in an aqueous phase containing a cationic nitrogenous emulsifier and a mineral or organic acid, the acid being in appropriate quantity so that the pH of the aqueous phase is comprised between 3 and 9. The aqueous phase also contains an agent consisting of at least one water-soluble sequestering salt of phosphonic acid, particularly a salt of alkaline metal or of amine of hydroxyalkyl-1,1-diphosphonic acid, and optionally a water-soluble thickening agent. To obtain the emulsions, which are usable for road applications, the emulsifying agent, the sequestering agent and optionally the thickening agent may be used in the form of a premixture containing the agents and called cationic emulsifying system.Type: GrantFiled: June 8, 1988Date of Patent: November 13, 1990Assignee: Elf FranceInventors: Francis Demangeon, Emile Lopez
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Patent number: 4968024Abstract: A ground surface material comprising a particulate base material such as sand which is coated with a binder comprising a free flowing extender oil, typically an aromatic oil, having a synthetic polymeric material such as styrene-butadiene-styrene copolymer dissolved or dispersed therein. The material can be laid on a suitable porous base to form a sports surface for a horse running track or the like.Type: GrantFiled: January 9, 1990Date of Patent: November 6, 1990Assignee: En-Tout-Cas plcInventor: Paul Hawkins
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Patent number: 4957560Abstract: Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of modified polyamine with certain polycarboxylic acids and anhydrides. The modified polyamides are obtained by reacting suitable polyalkylene amines with 1,2-unsaturated acids, able to undergo Michael addition of the amines across the double bonds resulting in amino acids which can undergo polymerization to low and high molecular weight amino polyamides.Type: GrantFiled: March 16, 1989Date of Patent: September 18, 1990Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4944804Abstract: Improved mixability (extended set time) and adhesion (asphalt coating on aggregate) are disclosed for cationic and anionic bituminous emulsion-aggregate paving slurries by the addition to the emulsion-aggregate mixture of small amounts of calcium sulfate hemihydrate (Plaster of Paris).Type: GrantFiled: October 31, 1988Date of Patent: July 31, 1990Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4902349Abstract: An asphalt/polyol emulsion is prepared from asphalt and polyol which are mixed and emulsified with a surface active agent and the plasticizer, by utilizing the behavior of a plasticizer according to the polymer solution theory and the surface-modifying effect of the plasticizer according to the surface chemistry.Type: GrantFiled: September 21, 1987Date of Patent: February 20, 1990Assignee: Toa Dora Kogyo Co., Ltd.Inventors: Saburo Wakizaka, Hiraku Hayasaka, Kazuki Hashimoto, Kentaro Shiojiri, Toshiaki Suzuki
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Patent number: 4895600Abstract: Asphalt compositions are improved by incorporating therein the reaction produce of (a) a phosphorus-containing compound, (b) an amine or polyamine and (c) a carbonyl-containing compound as an anti-stripping agent. These asphalt compositions are useful as a pavement material by blending with an aggregate.Type: GrantFiled: July 28, 1988Date of Patent: January 23, 1990Assignee: The Dow Chemical CompanyInventors: Dane Chang, Druce K. Crump
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Patent number: 4877457Abstract: Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of a sugar-containing syrup with modified polyamine which is the reaction product of a polyamine with certain polycarboxylic acids and anhydrides.Type: GrantFiled: October 27, 1988Date of Patent: October 31, 1989Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 4863308Abstract: The present invention relates to a waterproofing complex for the deck of a road structure, which is intended to receive a surfacing course, the said complex comprising:a bottom layer consisting of a mortar containing about 10 to about 15% of aggregate with a diameter of less than 80 .mu.m, and from about 7.5 to about 9.5% of a bituminous binder based on elastomers, the percentages being expressed by weight relative to the dry aggregate, anda top layer consisting of a bitumen rich in elastomers.It further relates to a process for the waterproof road lining of the deck of a structure.Type: GrantFiled: July 1, 1988Date of Patent: September 5, 1989Assignee: Entreprise Jean LefebvreInventor: Marc Stotzel
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Patent number: 4861377Abstract: Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of modified polyamine with certain polycarboxylic acids and anhydrides. The modified polyamines are obtained by reacting suitable polyalkylene amines with 1,2-unsaturated acids, able to undergo Michael addition of the amines across the double bonds resulting in amino acids which can undergo polymerization to low and high molecular weight amino polyamides.Type: GrantFiled: April 18, 1988Date of Patent: August 29, 1989Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4859245Abstract: Bituminous emulsion viscosifiers are disclosed to be prepared by condensation of the residue obtained from the distillation of crude tall oil or tall oil derived fatty acids and resin acids (rosin) with various amines, which when added to the asphalt before emulsification produce emulsions of a higher viscosity than the emulsion prepared with the asphalt without the additive, at the same or reduced bitumen content.Type: GrantFiled: February 8, 1988Date of Patent: August 22, 1989Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 4859362Abstract: Surface active agents are prepared from by-products of papermaking. According to this method, lignin, modified lignin, and mixtures thereof are reacted with a polyamine to produce an amine condensate, and this amine condensate is reacted with a bisulfite and formaldehyde in aqueous solution to produce the novel surface active agents.Type: GrantFiled: May 4, 1987Date of Patent: August 22, 1989Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 4847006Abstract: A method for long-term storage of radioactive waste in a solid bitumen is here taught. A granular ion-exchange resin (including radioactive ions) is mixed with a bitumen and water emulsion to produce a swollen aqueous product for encapsulation. The method is carried out at room temperature and optionally includes a cationic emulsion having a pH value of less than 4. The emulsion has a water content form 15-50% by weight and preferably is saturated with the water.Type: GrantFiled: June 19, 1987Date of Patent: July 11, 1989Inventors: Lars O. Hoglund, Hubert R. Eschrich
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Patent number: 4832747Abstract: Bitumen emulsions, usually having a relatively low average particle size, can be continuously and speedily prepared by a process comprising feeding emulsion components into the first of at least two static mixers, arranged in series. The product is passed from the first mixer to the second mixer maintained at a temperature lower than that prevailing in the first mixer and below the boiling point of water. The final emulsion product is obtained from the outlet of the second mixer. Bitumen emulsions of up to 70 wt. % bitumen of mean particle size of from 2 to 8 microns are also described.Type: GrantFiled: March 15, 1988Date of Patent: May 23, 1989Assignee: Exxon Chemical Patents Inc.Inventor: Jean Marchal
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Patent number: 4810298Abstract: A method of manufacturing asphalt foam comprising the steps of preparing polyether polyol containing 15 mole % or more of ethylene oxide, preparing urethane prepolymer by making the polyether polyol react with organic isocyanate, and obtaining asphalt foam by mixing the urethane prepolymer with (i) a silicone oil and (ii) an aqueous emulsion of asphalt to obtain an asphalt foam having a five cell structure and excellent water repellancy.Type: GrantFiled: December 2, 1987Date of Patent: March 7, 1989Assignee: Toyo Chemical Industry Co., Ltd.Inventors: Sadao Kumasaka, Koretoshi Katsuki
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Patent number: 4810299Abstract: Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of modified polyamine with certain polycarboxylic acids and anhydrides. The modified polyamines are obtained by reacting suitable polyalkylene amines with a sugar-containing syrup, preferably molasses.Type: GrantFiled: May 20, 1988Date of Patent: March 7, 1989Assignee: Westvaco CorporationInventors: Peter Schilling, Hans G. Schreuders
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Patent number: 4797434Abstract: A process for the manufacture of particulate material, and particularly material for constructing a horse riding surface, involves mixing raw granulated plastics material, such as PVC from waste electric cable, with a bitumen emulsion and water in such a way that the granules are coated while significant agglomeration is avoided. The bitumen emulsion is preferably 40% cationic. The water may be added as a bulk at lower pressure and a small amount at high pressure which is moved around to promote mixing.Type: GrantFiled: February 20, 1987Date of Patent: January 10, 1989Assignee: Denehunt Ltd.Inventor: Frederick D. Lovatt-Smith
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Patent number: 4786329Abstract: Asphalt compositions are improved by incorporating therein the reaction product of (a) a phosphorus-containing compound, (b) an amine or polyamine and (c) a carbonyl-containing compound as an anti-stripping agent. These asphalt compositions are useful as a pavement material by blending with an aggregate.Type: GrantFiled: September 9, 1987Date of Patent: November 22, 1988Assignee: The Dow Chemical CompanyInventors: Dane Chang, Druce K. Crump
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Patent number: 4765839Abstract: Bituminous compositions are improved by incorporating therein the reaction product of an organic amine with a substituted nitrogen-containing heterocyclic compound as an anti-stripping agent. These compositions are useful as a pavement material by blending with an aggregate.Type: GrantFiled: November 19, 1987Date of Patent: August 23, 1988Assignee: The Dow Chemical CompanyInventors: Duane S. Treybig, Dane Chang
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Patent number: 4762565Abstract: A paving composition comprising about 80 to 97% by weight of an open-graded aggregate and about 3 to 20% asphalt, said composition being formed by successively mixing two asphalt-containing emulsions A and B with said aggregate wherein:emulsion A comprises about 40 to 75% by weight of a soft asphalt having a viscosity in the range of 50 to 1000 centistokes at 210.degree. F. and 0.25 to 5% by weight of a emulsifier, and water as a continuous phase of said emulsion to make up 100% by weight; andemulsion B comprises about 40 to 75% by weight of a hard asphalt having a penetration 5 to 25 dmm at 77.degree. F. and 0.25 to 5% by weight of a emulsifier, and water as a continuous phase of said emulsion to make up 100% by weight.Type: GrantFiled: October 31, 1986Date of Patent: August 9, 1988Assignee: Chevron Research CompanyInventor: Peter E. Graf
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Patent number: 4738996Abstract: A composition which contains (a) 80 to 99% w of a bitumen component; (b) 1 to 20% w of an elastomer; (c) 1 to 60% w of a hydrocarbon resin which has been modified to contain carboxyl, carboxylic anhydride, hydroxyl and/or amino groups; and (d) 1 to 100% w of an inorganic filler, the weight percentages being based on the total weight of the bitumen component and elastomer, is suitable for coating structures and a process for applying the composition at elevated temperature onto a suitbale structure.Type: GrantFiled: March 31, 1986Date of Patent: April 19, 1988Assignee: Shell Oil CompanyInventors: Willem C. Vonk, Gerrit van Gooswilligen