Abstract: Methods and compositions for improving the strength and longevity of secondary roadways through environmentally sound practices are disclosed herein. A composition for road sealing includes an aqueous emulsion of acrylic and vinyl acetate polymer, water, and a resin-modified emulsion, wherein the resin-modified emulsion includes a mixture of pitch and rosin, an emulsifying agent, and water.

Abstract: This invention relates to the modification of bitumen by polymeric materials used particularly for the preparation of asphalt mixtures with enhanced mechanical properties, wherein the polymeric materials are selected from additives capable of forming a supramolecular assembly. The modified bitumen may be used for the fabrication of asphalts mixtures with mineral aggregates used in construction or maintenance of sidewalks, roads, highways, parking lots or airport runaways and service roads and any other rolling surfaces.

Abstract: An acid modified asphalt binder is combined with an emulsifier solution to produce an emulsified asphalt binder. The acid modified asphalt binder may be formed by combining an asphalt binder, a phosphorous-based acid, and, optionally, a polymer modifier. The emulsifier solution may be produced by forming an aqueous solution of an amine and a phosphorous-based acid, which forms an aqueous solution comprising an amine phosphate. The emulsified asphalt binder may be combined with an aggregate to form a paving material. In other examples, the emulsified asphalt binder may be used alone, for example in a chip seal application, or in a diluted form, for example in a fog seal application.

Abstract: A bituminous composition including, based on total weight of the bituminous composition, (a) hard bitumen in an amount of 0.5% to 7.5% by weight, the hard bitumen being characterized by a penetration number of 100 dmm or less at 25° C. as determined according to the American Association of State Highway and Transportation Officials (AASHTO) Method T49; (b) emulsifier in an amount of 0.0005% to 0.2% by weight, wherein the emulsifier has a Hildebrand solubility parameter of at least 19 (MPa)1/2; (c) water; and (d) aggregate in an amount of 90% to 99% by weight, the aggregate having an aggregate surface that is wetted with the hard bitumen, wherein the bituminous composition is at a temperature ranging from 50° C. to 140° C.

Abstract: A bituminous composition with improved paving performance, comprising a high-concentration-emulsifier bituminous emulsion is disclosed. The high-concentration-emulsifier bitumen emulsion has a higher content of surfactant than the conventional bitumen emulsion, thus facilitating the use of low levels of emulsion in the finished bituminous paving composition. Additionally, the high-concentration-emulsifier bitumen emulsion has superior surfactant dispersion property compared to the inverted bitumen dispersion, thereby enhancing the mixing and coating performance of the bituminous composition. The disclosed bituminous compositions may be used in a pavement construction at a much lower temperatures range compared to the conventional hot-mix bituminous composition, yet it develops adhesive strength and load-bearing strength properties at rates comparable to those of hot mix bituminous paving compositions.

Abstract: This invention relates to bituminous compositions and methods of producing the same. More particularly, the invention relates to the production of bituminous compositions formulated with performance-graded bitumen-containing solvent-free bitumen emulsions which exhibit controllable, temperature-dependent interfacial rheology. When employed in paving applications, these bituminous compositions develop adhesive strength and load-bearing strength properties at rates comparable to traditional hot mix paving compositions and at rates faster than traditional cold mix paving compositions.

Abstract: Bituminous asphalt binder materials which are modified by the addition of crumb rubber or ground tire rubber and a cross-linking agent are described. In addition, methods are provided for producing a modified asphalt binder containing crumb rubber or ground tire rubber and a cross-linking agent. The modified asphalt binders comprise neat asphalt, crumb rubber, one or more acids and a cross-linking agent. Optionally, the modified asphalt binder may include one or more polymer additives. The crumb rubber may be obtained from recycled truck and/or automobile tires. The addition of crumb rubber in asphalt binders can improve the consistency and properties of the asphalt binders at high and low temperatures. In particular, the modified asphalt binders of the present invention exhibit improved elastic behavior, resulting in improved performance of roads or other surfaces paved using the modified asphalt binder.

Abstract: The present invention relates to bituminous compositions suitable for use in paving applications containing water-in-oil bitumen dispersion of paving grade bitumen such as penetration-graded, viscosity-graded and/or penetration-graded varieties that is substantially free of volatile solvents and made by controlling temperature-dependent interfacial rheology through the use of selected surfactants. The invention paving compositions are suitable for use in the construction of load-bearing, high-traffic pavements at a temperature range lower than that required for conventional hot-mix bituminous paving compositions, yet with similar or superior compaction to densities property and at least equal cure rate.

Abstract: The invention relates to liquid compositions that include an aqueous asphalt mixture and polyurethane dispersion. The polyurethane dispersion includes a polyurethane that is based on an aliphatic polyol backbone based on polytetramethyl ethlene glycol and/or polycaprolactone. The aqueous asphalt mixture in the liquid composition generally constitutes a majority volume percent of the liquid composition. The polyurethane dispersion generally constitutes at least about 0.1 volume percent of said liquid composition.

Abstract: This invention relates to bituminous compositions and methods of producing the same. More particularly, the invention relates to the production of bituminous compositions formulated with performance-graded bitumen-containing solvent-free bitumen emulsions which exhibit controllable, temperature-dependent interfacial rheology. When employed in paving applications, these bituminous compositions develop adhesive strength and load-bearing strength properties at rates comparable to traditional hot mix paving compositions and at rates faster than traditional cold mix paving compositions.

Abstract: The present invention is a method and composition for controlling the viscosity of latex compositions that include fly ash. The composition is an aqueous dispersion comprising water, at least one polymer latex, from about 50 to about 600 parts by weight fly ash per 100 parts by weight dry polymer, and a viscosity stabilizing composition that preferably comprises at least one borate compound. The method includes adding a viscosity stabilizing composition to an aqueous polymer latex composition that includes fly ash. The viscosity stabilizing composition can be used to produce a stirred viscosity of the aqueous dispersion 7 days after mixing that is less than 30% greater than the viscosity of the aqueous composition immediately after mixing.

Abstract: This invention relates to bituminous compositions and methods of producing the same. More particularly, the invention relates to the production of bituminous compositions formulated with performance-graded bitumen-containing solvent-free bitumen emulsions which exhibit controllable, temperature-dependent interfacial rheology. When employed in paving applications, these bituminous compositions develop adhesive strength and load-bearing strength properties at rates comparable to traditional hot mix paving compositions and at rates faster than traditional cold mix paving compositions.

Abstract: The present invention relates to bituminous compositions suitable for use in paving applications containing bitumen emulsion of performance-grade bitumen that is substantially free of volatile solvents and made by controlling temperature-dependent interfacial rheology through the use of selected emulsifiers. The invention bituminous paving compositions are suitable for the construction of load-bearing pavements with improved compaction to densities similar or superior to those achieved in the conventional hot mix bituminous paving compositions. Cure rate of the invention bituminous compositions is higher than those of cold mix bitumen emulsion-based paving compositions, and at least equal to those of hot mix bituminous paving compositions. Additionally, the invention bituminous compositions develop adhesive strength and load-bearing strength properties at rates comparable to those of hot mix bituminous paving compositions, and at rates faster than those of cold mix bituminous paving compositions.

Abstract: The embodiments herein relate to a method of synthesizing new improved reactive terpolymer, S-MMA-X (styrene/modified maleic anhydride/X) wherein X is any type of polymers. The method involves synthesizing styrene-modified maleic anhydride complex (SMMA) with the ability to react with all kinds of polymers to produce new reactive terpolymer with formation of nano particles inside them. The nanoparticle formations improve the physio-chemical, thermal and mechanical properties of the newly formed reactive terpolymer when compared to natural rubber, their derivatives, EPDM or other known polymer etc. Depending on the property of the end product polymers produced by the invention, the end use can be varied. In one embodiment, the polymer X is natural rubber (NR) and the end product terpolymer is used as bitumen modifier. In another embodiment, the polymer X is ethylene-propylene diene monomer (EPDM) and the end product terpolymer behaves like a smart particle and absorbs oil and water contaminants.

Abstract: This invention relates to bituminous compositions and methods of producing the same. More particularly, the invention relates to the production of bituminous compositions formulated with performance-graded bitumen-containing solvent-free bitumen emulsions which exhibit controllable, temperature-dependent interfacial rheology. When employed in paving applications, these bituminous compositions develop adhesive strength and load-bearing strength properties at rates comparable to traditional hot mix paving compositions and at rates faster than traditional cold mix paving compositions.

Abstract: A method for formulating an emulsified polymer modified asphalt, and the emulsion thus created. The method includes mixing at least one polymer and a first binder in a high shear device to produce a polymer-binder composite; mixing the polymer-binder composite with a second binder to form a polymer modified asphalt; and emulsifying the polymer modified asphalt by combining effective amounts of an emulsifying agent and of water with the polymer modified asphalt.

Abstract: A cationic dispersion which includes at least one pigment, water, and at least one quaternary salt of a styrene maleimide imide resin in an amount effective to disperse the organic pigment. A method for preparing the cationic dispersion includes (i) mixing, at 500 to 10,000 rpm, at least one pigment; water; and either (a) at least one a quaternary salt of a styrene maleimide imide resin or (b) at least one styrene maleimide imide resin in combination with at least one weak acid, thereby forming a dispersion premix; (ii) milling the dispersion premix in a mixer filled with ceramic, metal or glass beads for a period of time sufficient to reduce pigment agglomerates to primary particles, thereby forming a non-standardized dispersion; and (iii) standardizing the dispersion against a color standard by adding water. The resulting cationic dispersion exhibits good alkali resistance and lightfastness, and can be used to integrally color concrete and other building materials.

Abstract: The invention relates to liquid compositions that include an aqueous asphalt mixture and polyurethane dispersion. The polyurethane dispersion includes a polyurethane that is based on an aliphatic polyol backbone based on polytetramethyl ethlene glycol and/or polycaprolactone. The aqueous asphalt mixture in the liquid composition generally constitutes a majority volume percent of the liquid composition. The polyurethane dispersion generally constitutes at least about 0.1 volume percent of said liquid composition.

Abstract: An environmentally friendly composition and related methods of use and production of an asphalt prime coat, suitable for application to a base road structure, are described herein. The composition includes an asphaltine, and an emulsion of a natural hydrocarbon resin mixed with a penetrating component, which can include a very limited quantity an organic solvent, or can omit organic solvents. If organic solvents are omitted, a hydrophobic wax can be added for moisture retention and water impermeability. Dispersion agents can be used to facilitate penetration into the base road. Rheology modifying agents and/or alcohols can be used to add flexibility, decrease curing time, and improve thickness and viscosity. The prime coat contains a lower quantity of volatile organic compounds than conventional prime coats, reducing environmental impact. The drying time of the composition is less than alternative compositions.

Abstract: The invention relates to liquid compositions that include an aqueous asphalt mixture and polyurethane dispersion. The polyurethane dispersion includes a polyurethane that is based on an aliphatic polyol backbone based on polytetramethyl ethlene glycol and/or polycaprolactone. The aqueous asphalt mixture in the liquid composition generally constitutes a majority volume percent of the liquid composition. The polyurethane dispersion generally constitutes at least about 0.1 volume percent of said liquid composition.

Abstract: Petroleum asphalt emulsions which contain recycled tire rubber and processes for making the emulsions at temperatures above ambient or room temperature. These emulsions may contain significant quantities of recycled tire rubber and recycled and reclaimed motor oils and fluxes. All of these formulations meet current specifications for products used to make slurry seal asphalt pavement coatings, ASTM D 1227 emulsified asphalt roof coatings, and may have applications as crack fillers for asphalt and Portland cement pavements, and as parking lot seal-coat materials.

Abstract: A binder for bituminous compositions including at least one dialkylamide derived from an unsaturated fatty acid; and at least one catalyst for polymerizing the at least one dialkylamide under the action of oxygen is provided. A bituminous composition including (i) 80% b.w. to 94.9% b.w. bitumen; and (ii) a binder, that includes (a) 1% b.w. to 19% b.w. unsaturated fatty acid dialkylamides; and (b) 0.1% b.w. to 1% b.w. of a polymerization catalyst, where the amounts are calculated based on the solids content of the composition, and where the amounts total 100% b.w. is also provided. A method for preparing a binder for a bituminous composition including combining at least one unsaturated dialkylamide derived from an unsaturated fatty acid with at least one catalyst for the polymerization of the at least one dialkylamide under the action of oxygen is also provided.

Abstract: Asphalt surfacing compositions and methods involving asphalt millings, water, and an amount of a polyvinyl alcohol sufficient to bind the millings such that a load-bearing asphalt paving surface is formed upon application of the composition to a material are provided.

Abstract: Synthetic asphalt and petroleum asphalt modified synthetic asphalt emulsions which contain recycled tire rubber and processes for making the emulsions at temperatures above ambient or room temperature. These emulsions may contain significant quantities of recycled tire rubber and recycled and reclaimed motor oils and fluxes. In addition, aluminum chloride and ferric chloride may be used in clay-in-water solutions to form emulsifying agents for the synthetic asphalt and modified synthetic asphalt mixtures.

Abstract: The invention is a method of treating, restoring or sealing a surface comprising applying an emulsion comprising a latex polymer, a cationic emulsifier, and optionally a recycling agent to the surface to wet the surface and depositing a surface treatment layer on the surface, wherein the depositing step occurs while the surface is wetted. The invention also includes a surface pretreatment composition comprising water, at least one acrylic latex polymer, an aromatic recycling agent, and at least one cationic emulsifier. Furthermore, the invention includes the surface resulting from the application of the emulsion used in the invention and concentrated emulsions for use with the surface treatment composition.

Abstract: The invention relates to liquid compositions that include an aqueous asphalt mixture and polyurethane dispersion. The polyurethane dispersion includes a polyurethane that is based on an aliphatic polyol backbone based on polytetramethyl ethlene glycol and/or polycaprolactone. The aqueous asphalt mixture in the liquid composition generally constitutes a majority volume percent of the liquid composition. The polyurethane dispersion generally constitutes at least about 0.1 volume percent of said liquid composition.

Abstract: In a first aspect, bituminous asphalt binder materials which are modified by the addition of crumb rubber or ground tire rubber are described. In a second aspect, the present invention is directed to methods of producing a modified asphalt binder containing crumb rubber or ground tire rubber. The modified asphalt binders comprise neat asphalt, crumb rubber, one or more synthetic polymers, and one or more acids. The crumb rubber may be obtained from recycled truck and/or automobile tires.

Abstract: The present invention relates to multi-part coating compositions that comprise a first part which is an asphalt emulsion comprising water, asphalt, and a dispersion system and a second part which is a liquid polymer composition that lacks water. The asphalt emulsion and liquid polymer composition are combined in situ to provide a coating that has fast dry characteristics, and that quickly develops good water-resistance. Such compositions are useful as coatings on metal, wood, and other surfaces, where fast drying characteristics are important. Such compositions are particularly useful as coatings on substrates where early water-resistance of the coating is important, such as those surfaces which are routinely exposed to the outdoors.

Abstract: Coated colored biofiber for thermoplastic articles is disclosed. The coating on the biofiber comprises film-forming polymeric binder, surfactant, and colorant. The colorant can be one or more pigments, one or more dyes, or combinations thereof. The coated colored biofiber can be used in thermoplastic compounds to simulate the appearance of natural wood while adding durability.

Abstract: In a first aspect, bituminous asphalt binder materials which are modified by the addition of crumb rubber or ground tire rubber are described. In a second aspect, the present invention is directed to methods of producing a modified asphalt binder containing crumb rubber or ground tire rubber. The modified asphalt binders comprise neat asphalt, crumb rubber, one or more synthetic polymers, and one or more acids. The crumb rubber may be obtained from recycled truck and/or automobile tires.

Abstract: Bituminous asphalt binder materials which are modified by the addition of crumb rubber or ground tire rubber and a cross-linking agent are described. In addition, methods are provided for producing a modified asphalt binder containing crumb rubber or ground tire rubber and a cross-linking agent. The modified asphalt binders comprise neat asphalt, crumb rubber, one or more acids and a cross-linking agent. Optionally, the modified asphalt binder may include one or more polymer additives. The crumb rubber may be obtained from recycled truck and/or automobile tires. The addition of crumb rubber in asphalt binders can improve the consistency and properties of the asphalt binders at high and low temperatures. In particular, the modified asphalt binders of the present invention exhibit improved elastic behavior, resulting in improved performance of roads or other surfaces paved using the modified asphalt binder.

Abstract: The present invention relates to bituminous compositions suitable for use in paving applications containing water-in-oil bitumen dispersion of paving grade bitumen such as penetration-graded, viscosity-graded and/or penetration-graded varieties that is substantially free of volatile solvents and made by controlling temperature-dependent interfacial rheology through the use of selected surfactants. The invention paving compositions are suitable for use in the construction of load-bearing, high-traffic pavements at a temperature range lower than that required for conventional hot-mix bituminous paving compositions, yet with similar or superior compaction to densities property and at least equal cure rate.

Abstract: A composition for rejuvenating asphalt pavement according to the present invention comprises an asphalt binder, water, a cationic surfactant, a recycling agent, and a cationic, co-agglomerated styrene butadiene rubber latex, which includes sulfur and a vulcanizing agent. The composition is also useful as a scrub seal, fog seal, sand seal as well as for crack filling and the prevention of reflective cracking. The inventive composition may be used in emulsions with different setup times. The invention also includes a method for treatment of aged and cracked asphalt by application of the disclosed compositions.

Abstract: The present invention is a method and composition for controlling the viscosity of latex compositions that include fly ash. The composition is an aqueous dispersion comprising water, at least one polymer latex, from about 50 to about 600 parts by weight fly ash per 100 parts by weight dry polymer, and a viscosity stabilizing composition that preferably comprises at least one borate compound. The method includes adding a viscosity stabilizing composition to an aqueous polymer latex composition that includes fly ash. The viscosity stabilizing composition can be used to produce a stirred viscosity of the aqueous dispersion 7 days after mixing that is less than 30% greater than the viscosity of the aqueous composition immediately after mixing.

Abstract: The present invention is directed to bituminous emulsions comprising bitumen, water, one or more emulsifiers and a block copolymer composition.

Abstract: A composition for microsurfacing of pavement is described. The composition includes a polymer-modified emulsion asphalt oil, water, cement, and crushed aggregate. The crushed aggregate includes a first portion having an L.A. abrasion resistance which is higher than an L.A. abrasion resistance of a second portion of the crushed aggregate.

Abstract: There is provided a method for making bituminous compositions comprising water-in-oil bituminous dispersion and aggregate by the steps of: preparing a solvent-free, water-in-oil bituminous dispersion comprising: (1) bitumen, in an amount from about 75.0% to about 95.0% by total weight of the bitumen dispersion; (2) a surfactant in an amount from about 0.05% to about 2.0% by total weight of the bitumen dispersion; and (3) water in an amount to complete the water-in-oil bituminous dispersion, and producing the bituminous composition having a temperature from about 50° C. to about 120° C. by mixing: (1) the water-in-oil bituminous dispersion of step (A), having a temperature from about 75° C. to about 95° C., in an amount from about 2.0% to about 10.0% by total weight of the bituminous composition, and (2) aggregate, having a temperature from about 60° C. to about 140° C., in an amount from about 90.0% to about 98.0% by total weight of the bituminous composition.

Abstract: Disclosed are a thermoplastic polymer-linked-asphalt composition and a process for making a thermoplastic polymer-linked-asphalt. More particularly, the present invention relates to the reaction and resultant linking of a combination of epoxide-containing polymers and anhydride-containing polymers to asphalt to form a polymer-linked-asphalt composition having higher softening points. The improved polymer-linked-asphalt product is particularly useful in roofing applications.

Abstract: Water-continuous emulsion of elastomeric polymers are disclosed having a solids content of greater than 75%, an average particle size less than 5 ?m, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water comprising; an elastomeric polymer, surfactant, water, optional plasticizer, optional low molecular weight acid, and is essentially free of organic solvents. The water-continuous emulsions of elastomeric polymers can be prepared by; (I) forming a premix that is essentially free of organic solvents comprising an elastomeric polymer and surfactant, and optionally a plasticizer and low molecular weight acid, and (II) adding water to the premix with mixing to form a water continuous emulsion of the elastomeric polymer having a solids content of greater than 75%, an average particle size less than 5 ?m, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water.

Abstract: Cationic aqueous emulsions of rubber modified asphalt cement (RMAC) useable for paving, seal coat, slurry seal, roofing, coating and other applications. First, a RMAC is prepared by combining 45 to 90% by weight asphalt with about 5% to about 55% by weight solid recycled rubber (e.g., crumb rubber from used vehicle tires) under conditions that cause at least a substantial portion of the solid rubber to become liquified or otherwise incorporated into the asphalt. The RMAC may be treated with dodecyl benzenesulfonic acid (DDBSA) which causes reaction(s) to occur and results in a lowering of the viscosity of the RMAC. The RMAC (or DDBSA-treated RMAC) may then be emulsified in an aqueous medium to provide an aqueous emulsion.

Abstract: A latex composition includes (i) 100 parts by mass (in terms of a solid content) of an anionic latex containing, as a main component, a conjugate diene copolymer containing (A) 55 to 99.99% by mass of a conjugate diene unit, (B) 0.01 to 5% by mass of an unsaturated carboxylic acid unit, (C) 0 to 44.99% by mass of an aromatic vinyl compound unit, and (D) 0 to 40% by mass of another unsaturated compound unit copolymerizable therewith, (ii) 0.1 to 20 parts by mass of a nonionic surfactant, and (iii) 0.1 to 10 parts by mass of a cationic surfactant. The latex composition has both of an excellent compatibility with an asphalt and a strong adhesiveness to an aggregate.

Abstract: Provided is a method for accelerating the biodegradation of aliphatic-aromatic co-polyesters comprising greater than 60 mol percent aromatic acid, based on total diacid in the co-polyester. The method involves contacting at least one hydrolytic enzyme in aqueous solution to the co-polyester.

Abstract: Polymer derivatives based upon polyalkyleneimine backbones having from about 20% to about 60% of their reactive amino functionalities substituted by C14-20 carboxylic acids, are disclosed. Fiber lubricants and/or sizing compositions comprising such polymer derivatives are also disclosed. The disclosed fiber lubricants exhibit excellent affinity for fiberglass fibers and have excellent hydrophobicity, while also providing excellent lubrication. Methods for preparing said derivatives are also disclosed. Also disclosed are methods for treating fibers using the polymer derivatives.

Abstract: An aqueous tar solution having excellent stability in which tar is dissolved in a liquid and which does not cause precipitation or separation, as well as a tar-containing coating composition having highly rot- and termite-proofing effects, are provided. The aqueous tar solution is obtained by mixing 10 to 50 g of a 10–50% NaOH solution is mixed, relative to 100 g of tar, to produce a processed tar, and further mixing and dissolving 100 g of a 2–5% NaOH solution, relative to 10 to 20 g of the processed tar. The tar-containing coating composition is obtained by mixing the aqueous tar solution in an aqueous coating composition having resin as the major component and containing charcoal powder.

Abstract: A chemical composition and method for enhancing the physical properties of a materials. The composition may be used as a material conditioner and stabilizer is disclosed. The chemical composition may include a resin, a polymer, an emulsifier and an asphalt emulsion. The method of treating the material may include the steps of applying a chemical composition comprising a vinyl acrylic polymer, a styrene-butadiene copolymer, an anionic emulsifier and an asphalt emulsion. The materials treated may include soil.

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: An asphalt-based, cold paving/coating formulation that provides increased flexibility with respect to the choice of aggregate types, asphalt emulsion types, type and amount of the surfactants used to produce the asphalt emulsion, asphalt emulsion pH's and application temperature's than conventional cold paving/coating formulations while providing good mix times and curing behavior. The asphalt-based formulation can be formed by mixing water; an asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts, and ammonium hydroxide; at least one second compound in aqueous solution selected from the group consisting of Group IIA salts, Group IIIA salts, Group IIIB salts, copper salts, zinc salts, cadmium salts, manganese salts, iron salts, cobalt salts, and nickel salts; and optionally aggregate. Also, a method of preparing an asphalt-based formulation using these components.

Abstract: A release agent for bituminous material is disclosed which comprises a mineral oil-free composition containing an aqueous dispersion of a polyalkenamer, preferably a polyoctenamer. The release agent may additionally contain a dispersing agent and at least one fatty acid ester. The release agent also may be used for the cleaning of surfaces such as motor vehicles, road making machines and environmental surfaces contaminated with bituminous material.

Abstract: The invention relates to a release agent for bituminous material, characterized by a mineral oil-free composition containing an aqueous dispersion of a polyalkenamer, preferably of a polyoctenamer. The release agent may additionally contain a dispersing agent and at least one fatty acid ester. The release agent may also be used for the cleaning of surfaces contaminated with bituminous material.

Abstract: An aqueous tar solution having excellent stability in which tar is dissolved in a liquid and which does not cause precipitation or separation, as well as a tar-containing coating composition having highly rot- and termite-proofing effects, are provided. The aqueous tar solution is obtained by mixing 10 to 50 g of a 10-50% NaOH solution is mixed, relative to 100 g of tar, to produce a processed tar, and further mixing and dissolving 100 g of a 2-5% NaOH solution, relative to 10 to 20 g of the processed tar. The tar-containing coating composition is obtained by mixing the aqueous tar solution in an aqueous coating composition having resin as the major component and containing charcoal powder.