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| Number | Title | Issue Date |
| 8048943 | Bituminous compositions 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 supramolecula... | 11/01/2011 |
| 7951857 | Water-in-oil bitumen dispersion and methods for producing paving compositions from same 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... | 05/31/2011 |
| 7879926 | Method and composition for controlling the viscosity of latex compositions that include fly ash 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 ... | 02/01/2011 |
| 7700672 | Recycled tire rubber emulsions and processes 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 ... | 04/20/2010 |
| 7655712 | Bituminous composition and method 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) 8... | 02/02/2010 |
| 7491756 | Water-based asphalt coating composition 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... | 02/17/2009 |
| 7417082 | Modified asphalt binder material using crosslinked crumb rubber and methods of manufacturing the modified asphalt binder 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 rub... | 08/26/2008 |
| 7357594 | Method of rejuvenating road surfaces with polymer modified asphalt emulsions 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 a... | 04/15/2008 |
| 7351780 | Method for manufacturing high viscosity polyalphaolefins using ionic liquid catalysts A method of continuously manufacturing a high viscosity polyalphaolefin product by introducing a monomer and an ionic liquid catalyst together into a reaction zone while simultaneously withdrawing from the reaction zone a reaction zone effluent that contains the hig... | 04/01/2008 |
| 7341661 | Clarification and sorptive-filtration system for the capture of constituents and particulate matter in liquids and gases A sorptive-filtration system for removing at least one of negatively or positively charged ions, complexes or particulates from an aqueous stream. The system includes a) flow formed substantially from at least one of rainfall-runoff or snowmelt-runoff; b) a filter c... | 03/11/2008 |
| 7341102 | Flue gas injection for heavy oil recovery A variety of methods for thermal recovery of natural gas and bitumen from a formation containing the latter. In general, the methods incorporate a series of existing, but previously uncombined technologies. A modified flue gas from the steam generators conventionall... | 03/11/2008 |
| 7338991 | Process for preparing bitumen/rubber compositions In methods of preparing asphalt and elastomeric polymer compositions, it has been discovered that for a given crosslinker or vulcanizing agent there is an optimum crosslinking temperature to give a composition that has top and bottom softening points that are close.... | 03/04/2008 |
| 7312262 | Methods and compositions for microsurfacing 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 ... | 12/25/2007 |
| 7297204 | Water-in-oil bituminous dispersions and methods for producing paving compositions from the same 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... | 11/20/2007 |
| 7279017 | Method for converting heavy oil residuum to a useful fuel A method for enabling the use of heavy oil residuum by conversion to a useful product. The method, in one embodiment, involves the use of a heavy oil residuum which is substantially non flowable. The viscosity of the residuum is reduced by heat or a combination of h... | 10/09/2007 |
| 7275890 | Cold in-place recycling of bituminous material A method of reconstructing a road is provided. This method includes taking representative cores of the road, analyzing the cores, selecting a substantially solvent-free emulsion based on climate history, mixing the emulsion and reclaimed asphalt pavement particles t... | 10/02/2007 |
| 7229560 | Sack-based processes for recovering oil floating on water One or more water- and oil-porous containers or sacks are made of a pair of mesh sheets affixed together and stiffened around their perimeter. The sacks can be partially filled with a multitude of tubular bodies made of an oil-entrapping polymer, which have their lo... | 06/12/2007 |
| 7186765 | Method for preparation of stable bitumen polymer compositions 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 ela... | 03/06/2007 |
| 7175703 | Liquid composition additive to reduce curing time of surface coatings A liquid composition, active curing additive for water or solvent borne surface coatings and sealants such: latex products, paints, putties, caulks, sports track and court construction, asphalt or coal tar seal coating, asphalt paving, micro-seal, roof tars, asphalt... | 02/13/2007 |
| 7160943 | Aqueous crumb rubber composition A fluid or semifluid additive composition useful for asphalt paving comprises between about 10% and about 50% crumb rubber, about 10% and about 50% petroleum hydrocarbon having at least about 50% aromatics, between about 10% and about 50% surface active clay, and wa... | 01/09/2007 |
| 7157508 | Polymer-linked asphalt compositions 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 a... | 01/02/2007 |
| 7153902 | High solids emulsions of elastomeric polymers Water-continuous emulsion of elastomeric polymers are disclosed having a solids content of greater than 75%, an average particle size less than 5 μm, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water comprising; an e... | 12/26/2006 |
| 7119549 | Output calibrator with dynamic precision An integrated circuit device having an output driver circuit and a control circuit. The output driver circuit outputs a first signal having a signal level according to a control value. The control circuit is coupled to receive the first signal from the output driver... | 10/10/2006 |
| 7114875 | Method and apparatus for laying hot blacktop paving material A method of laying hot blacktop paving material, the method comprising a spreading step during which the material is spread onto a surface for receiving it, and immediately prior to the spreading step, a step of adding water during which water plus wetting agent is ... | 10/03/2006 |
| 7094338 | Method of making and using a filter in the form of a block of agglomerated copolymer fragments One of the exemplary filter systems described includes a bracket and a filter module that can be suspended from the bracket by a plurality of flexible supports. The bracket can support the filter system beneath the grate of a storm drain without the need for the fil... | 08/22/2006 |
| 7087665 | Quick-setting cationic aqueous emulsions using pre-treated rubber modified asphalt cement 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 rec... | 08/08/2006 |
| 7084195 | Latex composition and process for producing the same, and asphalt composition and cationic asphalt emulsion using the same 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 ... | 08/01/2006 |
| 7053130 | Method to accelerate biodegradation of aliphatic-aromatic co-polyesters by enzymatic treatment 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 sol... | 05/30/2006 |
| 7048878 | Process of forming oil-absorbent bodies A process for forming an oil-sorbent composition of matter with bound combinations of styrene-butadiene-styrene (SBS) and ethylene propylene diene monomer (EPDM) utilizes a low-temperature extrusion process. The SBS, or both materials, may be in the form of multitud... | 05/23/2006 |
| 7045570 | Liquid asphalt modifier The present invention relates to compositions and methods for providing an improved means of modifying asphalt with a polymer. More particularly, this invention provides a solvent system that permits addition of the polymer as a liquid that is preferred over solids ... | 05/16/2006 |
| 7026435 | Water-dispersible, hydrophobic polyalkyleneimine polyamide fiberglass lubricant, process for producing the same, and method of use therefor 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 polyme... | 04/11/2006 |
| 6995199 | Wood-based refined tar-containing coating compositions 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 ... | 02/07/2006 |
| 6982291 | Material conditioner and stabilizer and method for making and using same 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.... | 01/03/2006 |
| 6979705 | Water based coal tar emulsions Water-based coal tar emulsions are described which are prepared from a blend comprising coal tar, water, acrylonitrile-butadiene copolymer powders and clay. After the emulsion is prepared from the blend, a rubber latex may be added to the emulsion. Films obtained fr... | 12/27/2005 |
| 6913816 | Composite mat product for roofing construction This invention relates to a low fiber, pliable composite mat product suitable for use in the construction industry, particularly as an interlayer in roofing between a weathering course, e.g. a shingle and structural decking, e.g. plywood, which is a dry preformed fi... | 07/05/2005 |
| 6894092 | Aqueous asphalt emulsions containing liquefied or devulcanized recycled rubber 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 part... | 05/17/2005 |
| 6855754 | Asphalt-based formulations and method of making and using the same for paving and coating applications 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 applicatio... | 02/15/2005 |
| 6855192 | Release agent for bituminous material and use thereof 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 ... | 02/15/2005 |
| 6706787 | Method for preparing asphalt/polymer emulsion-rubber paving composition 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 ... | 03/16/2004 |
| 6518354 | Dispersing emulsion of thermoplastic elastomer and process for preparing the same 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 ... | 02/11/2003 |
