Abstract: A method of preparing an asphalt emulsion composition comprises preparing an aqueous emulsion of a synthetic polymer and asphalt mixture, and blending the aqueous asphalt/polymer emulsion with reclaimed rubber particles wherein the ratio of polymer:rubber particles is between about 1:2 and about 1:20, by weight, respectively, at ambient temperature. The final composition may also contain one or more solids selected from a rheological agent, gilsonite, carbon back, surface active clay and polymer fibers, and mixtures thereof.

Abstract: There is provided a dispersing emulsion excellent in storage stability and mechanical stability, particularly an asphalt modifier of an water based dispersing emulsion, which can be mixed with a hot asphalt or an asphalt emulsion, and can improve rutting resistance, toughness, and flexibility at a low temperature without losing workability. There is provided a dispersing emulsion of a thermoplastic elastomer, which is emulsified and dispersed in the presence of at least one nonionic emulsifier selected from the group consisting of a styrenated phenol poly(alkylene oxide), a poly(alkylene polyamine) poly(alkylene oxide), polyalcohol fatty acid esters, polyalcohol fatty acid esters poly(alkylene oxide), and a benzylated phenol poly(alkylene oxide).

Abstract: Non thixotropic, aqueous emulsions prepared from rubber modified asphalt cement (RMAC). The RMAC is prepared by a method whereby recycled tire rubber is liquified or otherwise consumed by or incorporated into asphalt such that no more than 2% by weight of solid particulate rubber remains. The RMAC may be emulsified in an aqueous or partially aqueous emulsification solution using a one-step or multi-step emulsification process. These aqueous RMAC emulsions are useable in many applications including paving, seal coat, roofing and slurry seal applications.

Abstract: This invention relates to an asphalt modifier comprising 5˜30 wt. %. of solubilized styrene-butadiene-styrene block copolymer and 70˜95 wt. % of solubilized styrene-butadiene latex, which has an excellent resistance property against plastic deformation, while preventing the occurrence of crack at a low temperature.

Abstract: 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 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. Crosslinking agents comprise zinc 2-mercaptobenzothiole and elemental sulfur in a ratio of zinc 2-mercaptobenzothiazole to sulfur of 2.0/1.0. Useful concentrates are possible using this method while avoiding gel formation.

Abstract: The invention concerns an aqueous bitumen emulsion, consisting of the following constituents expressed in weight percentages of the emulsion total weight: 50% to 70% of bitumen; 0.5% to 10% of surfactant; 0% to 5% of thickening agent; 0% to 1% of antifoaming agent; a sufficient quantity of water to make up 100%. Said emulsion is characterised in that the surfactant consists of at least a surfactant selected among the group consisting of an ethylene oxide and a propylene oxide copolymer, with PO/EO ratio ranging between 1.5 and 10, an ethoxylated and/or propoxylated epoxidized surfactant, and a polyvinyl alcohol having molecular mass ranging between 10000 and 150000. The invention also concerns the method for obtaining said emulsions, the compositions containing them, and the use of said bitumen emulsions for the formulation of compositions comprising a hydraulic or organic binder, and/or a mineral or organic filler.

Abstract: An asphalt emulsion and method and apparatus of making the same.

Abstract: A bitumen emulsion comprising bituminous binder, emulsifier, and water. The bituminous binder comprises bitumen and an oxidised wax, and optionally one or more polymers. The incorporation of the oxidised wax into the bituminous binder provides modified bitumen with both a high softening point and a low enough viscosity to allow it to be emulsified. The emulsion may be used as a tack coat in applying a waterproofing layer to a roof base. The emulsion may be made using a static mixing emulsion process.

Abstract: An emulsion consists essentially of clear binders and possibly colored pigments, and contains at least one clear synthetic binder with a softening point or ball-ring temperature (TBA), measured according to the NFT 66-008 standard, that ranges between 30 and 100° C.

Abstract: A method is provided for modifying the rheology of a slurry of a mineral-containing solid material and water by adding a low molecular weight sulfonate-containing polymer to the slurry. The polymer preferably comprises acrylamide, acrylic acid and acrylamidomethyl sulfonate. The inventive method has applications in the nickel ore, cobalt ore, precious metals ore, copper ore, taconite, mineral sands, coal and bauxite industries.

Abstract: 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.

Abstract: An aqueous ink for a ball-point pen which is stable over time and has high pigment dispersion stability, includes a pigment, a water-soluble organic solvent, water, xanthane gum of about 0.01 to about 0.2 wt. % and a sodium alginate of about 0.2 to about 0.6 wt. % of a total amount of the ink.

Abstract: 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.

Abstract: A three component multi-color asphalt emulsion coating is provided in which a water-based carrier, an emulsified asphalt base and at least one globular color components are mixed together. The color components are prevented from mixing with the emulsified asphalt base by relative viscosity and colloidal strength of the color components. The resultant product has enhanced wear characteristics, and is easier and less expensive to apply than traditional roofing such as asphalt shingles. A process for forming the multi-color asphalt emulsion coating is provided wherein the water-based carrier, the emulsified asphalt base, and the globular color components are formed separately prior to first mixing the emulsified asphalt base with the water-based carrier and then blending as many prepared globular color components as desired.

Abstract: In one embodiment, the present invention relates to an asphalt composition containing asphalt, a terpenoid liquid, a rubber at least partially soluble in the asphalt composition and a flexible aggregate.

Abstract: 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.

Abstract: A gel-like emulsion containing natural rubber and crumb rubber from used vehicle tires which may be added to an asphalt paving emulsion at ambient temperature for chip coating, slurry sealing, microsurfacing, soil stabilization or pavement recycling.

Abstract: 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.

Abstract: 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.

Abstract: The present invention relates to mixtures of bitmen, of powdered rubber waste and of at least one copolymer (A) of an alpha-olefin and of at least one unsaturated epoxide, such that:the Brookfield viscosity at 180.degree. C. according to NFT Standard 76102 (27 needle) is lower than 1150 mPa s;the difference in absolute value of the softning points (ring-and-ball temperature) according to NFT 66008 between the top and bottom fractions of a mixture stored for 3 days at 180.degree. C. in a vertical tube is smaller than or equal to 5.degree. C. These mixtures are useful as road binders.

Abstract: Product and method for making an asphaltic emulsion enjoying the weather-resistant and durability advantages of a fully-oxidized asphaltic base. Preferred compositions according to the invention comprise a fully-oxidized asphalt having a softening point of between about 110.degree. F. and about 160.degree. F. and a slurry, the slurry comprising water, a colloidal clay (preferably bentonite clay), barium chloride, and citric acid. Optionally sodium dichromate, fillers such as cellulose fibers, and biocidal agents are added as well. The method for making such asphalts comprises oxidation of a flux asphalt in an air still, preparation of the slurry, and combination of the oxidized asphalt and the slurry in a high speed mixing machine such as a colloidal mill.

Abstract: Process and composition for styrene-ethylene-butylene-styrene (SEBS) block copolymer modified asphalt mixtures for use in roofing, sealing, paving, and waterproofing membranes. Powdered and pelletized SEBS is added to oxidized or unoxidized asphalt flux in high-shear processes, and is applied in hot and ambient uses such as cutbacks and emulsions, with or without added fillers, fibers, or other additives.

Abstract: Disclosed are a curable composition, a cured article therefrom having improved properties, an asphalt emulsion, an asphalt mixture for paving, and a cured article prepared therefrom having an excellent water permeability.

Abstract: A multiple phase emulsion or gel including a water phase within at least one oil phase in which either or both of the phases contains one or more chemical moieties selected from a group consisting of organic compounds that have multiple hydroxide functionality, cholesterol, lecithin, multiple valent metal ions, saponified organic acids, unsaponified organic acids, saponified organic bases, unsaponified organic bases, nonionic surfactants and amphoteric compounds. The water and oil phase is also within a second water or oil phase in which the second water or oil phase is obtained by mixture of chemical moieties selected from a group consisting of organic acids, tall oil products, organic bases, phosphates, sulfates, nonionic chemicals, amphoterics and betaines.

Abstract: 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.

Abstract: The present invention relates to an asphalt composition prepared from bitumen (asphalt), linear and non-linear copolymers of styrene and butadiene, cross-linking agents, and emulsifiers. The present invention compositions are useful for industrial applications, such as hot-mix and emulsified asphalts used with aggregates for road paving, and repair.

Abstract: 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.

Abstract: It has been determined that rubbery terpolymers of a conjugated diolefin monomer, a vinyl aromatic monomer, and N-(isobutoxymethyl) acrylamide (IBMA) can be used to modify asphalt cement to greatly enhance the resistance to shoving, rutting, and low temperature cracking of asphalt concretes made therewith. These rubbery polymers have a Mooney viscosity which is within the range of about 35 to about 80. It has further been determined that these rubbery terpolymers are compatible with virtually all types of asphalt. It is particularly preferred for the rubbery polymers of this invention to also contain repeat units which are derived from hydroxypropyl methacrylate (HPMA).

Abstract: Disclosed is an asphalt composition to which a water soluble prepolymer which is resinified while the reaction proceeds gradually in the aqueous solution is added, wherein the strength of the asphalt composition is notably improved. Further, the resinification speed can freely be controlled by the action of a resinification accelerator. Accordingly, the additive for the emulsified asphalt and the asphalt composition for blending at cold temperatures can be applied effectively to various applications such as road pavement, railroad, waterproof agents, and adhesives.

Abstract: A coating composition useful for coating a surface, such as a pipe surface, includes a water-based emulsion containing an asphalt having a penetration value of no greater than about 10 dmm at 25.degree. C., a latex, at least one thickener and a surface active wetting agent.

Abstract: 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.

Abstract: Coating compositions comprising aluminum pigment, neoprene latex asphalt emulsion, at least one surfactant for reducing reaction of the aluminum pigment with water and with the neoprene latex, at least one organic solvent, and water. The compositions are formed by providing an aluminum pigment mixture comprising aluminum pigment, the surfactant and the organic solvent, providing an aqueous neoprene latex asphalt emulsion and mixing the pigment mixture and the aqueous neoprene latex asphalt emulsion to form the coating composition. The compositions are suitable for coating a variety of surfaces, particularly roof structures and the like.

Abstract: This invention relates to rapid set, medium set, and slow set anionic emulsions prepared from straight bitumen or bitumen modified by the incorporation of polymers such as styrene butadiene rubbers (SBR), styrene block copolymers (SBS), ethylene vinyl acetate copolymers (EVA), and other suitable modifiers. The invention also relates to emulsions modified by the incorporation of solvents (such as diesel oil or kerosene) or by the addition of polymer latices (such as SBR-latex or natural rubber latex). More particularly, the invention relates to improved methods for enhancing adhesion between asphalt and aggregate in anionic solventless and solvent-containing bituminous emulsions wherein the emulsifiers are alkali earth salts of tall oil fatty acids, fortified tall oil fatty acids, tall oil rosin and fortified rosin as well as combinations of kraft lignin and nonionic emulsifiers.

Abstract: This invention relates to rapid set, medium set, and slow set anionic emulsions prepared from straight bitumen or bitumen modified by the incorporation of polymers, solvents, or polymer latices. Particularly, the invention relates to improved methods for enhancing adhesion between the asphalt and the aggregate in avionic solventless and solvent-containing bituminous emulsions wherein the emulsifiers are alkali earth salts of tall oil fatty acids, fortified tall oil fatty acids, tall oil rosin and fortified rosin as well as combinations of kraft lignin and nonionic emulsifiers. The adhesion promoters utilized in these improved methods are the reaction products of styrene (.alpha.-methyl styrene)-acrylic (metacrylic) acid polymers with polyalkylene amines. Further improvement can be obtained by using tall oil fatty acid or fortified tall oil fatty acids as co-reactants in the production of the polyamidoamine products.

Abstract: The invention relates to a reinforcing material suitable for repairing cavities in the ground surrounding an underdrain through which sewers are laid down, and provides a bituminous reinforcing material for grouting excellent in workability and durability. The two-liquid bituminous reinforcing material comprises a liquid A that is obtained by mixing together an asphalt emulsion, a hydraulic inorganic material, a reactive type of water-soluble resin, and water, and a liquid B that is obtained by mixing together an asphalt emulsion, a hydraulic inorganic material, a polymerization catalyst, and water.

Abstract: This invention relates to the manufacture and application of uniquely suitable emulsifiers for anionic bituminous emulsions. In particular, this invention relates to emulsifiers for slow-setting aqueous emulsions suitable for use in applications where a high degree of chemical, mechanical, and rheological stability is required (such as in slurry seal applications and thixotropic industrial emulsion applications). In such applications, fine aggregate, clay, or polymer latex is mixed with the emulsion to obtain a homogenous storage-stable composite which can be applied for coatings, floorings, roofings, and as a roadway sealant.

Abstract: A pavement rejuvenating and/or conditioning composition in which particular coal tar derivatives and other optional ingredients are supplemented with an elastomeric constituent. A rejuvenating or conditioning composition containing an elastomer will reliably hold in place a top layer of fine aggregate, whereas a rejuvenating or conditioning composition without elastomer does not, and also allows for early restoration of traffic, prompt resistance to rain, and good repair and wear resistance of and in the pavement to be maintained. The elastomer is preferably acrylonitrile-butadiene polymer although other polymers can also be substituted including natural and nitrile-rubbers, polyorganosiloxane and, less preferably, styrene-butadiene, neoprene- and polybutadiene polymers.

Abstract: A thermosetting asphalt composition includes a blend of an asphalt and an epoxy-functionalized polymer, the epoxy-functionalized polymer being present in an amount within the range of from about 4 to about 30 percent of the combination of asphalt and epoxy-functionalized polymer.

Abstract: Disclosed is a thermoplastic polymer-linked-asphalt and a process for making a thermoplastic polymer-linked-asphalt. More particularly, disclosed is a reaction process for linking epoxide-containing polymers to asphalt. The improved thermoplastic polymer-linked-asphalt product is particularly useful in road paving and roofing applications.

Abstract: A method of preparing an asphalt emulsion-rubber paving composition comprises combining an aqueous asphalt emulsion, water, latex rubber, minus 40 size rubber particles, and a thickening agent, mixing said materials at substantially ambient temperature to form a substantially homogeneous liquid composition, adding to said liquid composition between about 5 and about 15 pounds of aggregate per gallon of said gallon, and mixing the components at substantially ambient temperature to form such paving composition.

Abstract: It has been determined that rubbery terpolymers of a conjugated diolefin monomer, a vinyl aromatic monomer, and N-(isobutoxymethyl) acrylamide (IBMA) can be used to modify asphalt cement to greatly enhance the resistance to shoving, rutting, and low temperature cracking of asphalt concretes made therewith. These rubbery polymers have a Mooney viscosity which is within the range of about 35 to about 80. It has further been determined that these rubbery terpolymers are compatible with virtually all types of asphalt. It is particularly preferred for the rubbery polymers of this invention to also contain repeat units which are derived from hydroxypropyl methacrylate (HPMA).

Abstract: A bitumen emulsion of the cationic type is disclosed which contains a thickener comprising at least one substance selected from the group consisting of associative thickeners of the nonionic type. The invention also relates to the use of a thickener of the above mentioned type as a thickener in a bitumen emulsion of the cationic type and the use of a bitumen emulsion containing a thickener as set forth above in road building, roofing and waterproofing.

Abstract: This bitumen-polymer emulsion contains:a) at least one bitumen,b) at least one polymer having hydrocarbon chains with mobile hydrogens, said polymer being grafted and crosslinked in situ in said bitumen through a complex of at least one organic silicon compound, said complex being formed from a primary constituent and a secondary constituent, the latter being an organic silicon compound,c) water, andd) at least one emulsifier.

Abstract: A water absorbing particulate polymer material wherein the polymer material when in dry powder form has a particle size of about 50 .mu.m to about 500 .mu.m and wherein the particles consist of internally bonded finer particles which finer particles have a size below 50 .mu.m. The process of using the water absorbing polymer, material to convert a wet sticky mass of inorganic particulate such as coal fines into a crumbly or flowable solid. A process using a water absorbing particulate polymer material to convert a wet sticky mass of organic particulate material into a crumbly or flowable solid wherein the organic matter can be, for example, food waste or sewage.

Abstract: A process is provided for preparing in aqueous emulsion, a bitumen/polymer binder with a continuous three-dimensional polymeric structure. The process comprises:a) forming a reaction mixture in an emulsion formation zone by feeding to the zone(i) a bitumen-polymer component comprised of a bitumen containing 0.5% to 15%, by weight of the bitumen, of a sulphur-crosslinkable elastomeric polymer, the bitumen/polymer component being in the form of a melt viscosity of not more than 2 Pa.s at the melt temperature,(ii) an aqueous phase containing an effective quantity of an emulsifying system, and(iii) a crosslinking system donating sulphur in a quantity such as to provide 0.

Abstract: The invention relates to a method for producing an aqueous asphalt binder emulsion which makes it possible to control the viscosity and breaking properties of the emulsion.

Abstract: Emulsions of asphaltic materials, such as asphalt or asphalt blends with polymers, in water using copolymeric anionic emulsifiers are disclosed. The copolymeric anionic emulsifiers use ionizable carboxyl groups as their hydrophilic moiety. The emulsions using these copolymeric emulsifiers are stable, allowing them to be used anywhere where asphalt or modified asphalt is used as a sealant, coating, or binder. These emulsions can also be mixed with polymer latices, pigments, fibers, fillers and other additives to impart particular properties specific to the type of application, i.e., pigmented flexible coating compositions, non-sag sealer and sealant compositions, water borne adhesive compositions, etc., for use in construction and industrial fields. These asphalt emulsions have better freeze-thaw stability, higher solids contents, and wider applicability to polymer modified asphalt compositions than prior art emulsions.

Abstract: A bituminous composition comprising a bituminous component, a polymer which comprises at least one block of a conjugated diolefin and at least one block of an acrylic monomer such as an alkyl methacrylate and from 0.001 parts to 1 part by weight of a polyfunctional amine having at least two amino groups. An acid or anhydride functionalized conjugated diene block copolymer may be used in place of the acrylic monomer polymer.

Abstract: Disclosed is a thermoplastic polymer-linked-asphalt and a process for making a thermoplastic polymer-linked-asphalt. More particularly, disclosed is a reaction process for linking epoxide-containing polymers to asphalt. The improved thermoplastic polymer-linked-asphalt product is particularly useful in road paving and roofing applications.

Abstract: A stable polymer dispersion having an average particle size of no more than 1 micron comprising water, a surfactant and a polymer comprising at least one conjugated diolefin block and/or vinyl aromatic hydrocarbon block and at least one acrylic monomer block with the structure ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, phenyl and alkyl radicals which are linear or branched and contain from 1 to 10 carbon atoms, and R.sub.2 is a cyclic or non-cyclic alkyl radical which is branched at the first carbon atom, contains from 1 to 14 carbon atoms and may contain a tertiary amine or an ether linkage.