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7576042 |
Salt water stable latex cement slurries
A method of servicing a wellbore comprising preparing a cement slurry by premixing at least one latex, at least one stabilizer, and optionally water to form a homogeneous solution, further mixing...
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7462234 |
Wellbore servicing compositions
A wellbore servicing comprising a calcium aluminate cement and at least one gelation inhibitor wherein the calcium aluminate cement comprises less than about 50 wt. % alumina, greater than about 2...
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7241818 |
Filler comprising fly ash for use in composites
The present invention is a fly ash filler or filler blend having a particle size distribution with at least three modes that can be combined with a polymer or bitumen at higher filler loadings to...
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7150787 |
Polymer-modified gypsum composition
A composition including two components is provided. When the two components are admixed in the method of the invention a polymer-modified gypsum composition is provided. The admixture exhibits a...
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7060129 |
Process for controlling gas migration during well cementing
The present invention provides a cement composition and a process for using the cement composition to inhibit gas migration from a subterranean zone into the cement. The process comprises...
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6964986 |
Aqueous adhesive system, method for the production and use thereof
An aqueous adhesive system consisting of two separate components, A and B. Component A is an aqueous dispersion of polymer containing at least one olefinically unsaturated double bond and Component...
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6869987 |
Cementitious compositions and a method of their use
A settable composition which can be applied by spraying to form a coating on a surface such as the walls of a mine comprises (i) a cementitious composition comprising the following components: (a)...
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6867249 |
Lightweight and porous construction materials containing rubber
The present invention relates to a process for manufacturing a construction material by mixing a cementitious material, rubber bits and water. It also extends to a construction material comprising...
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6762221 |
Use of naphthalenesulfonic acid-formaldehyde condensates products as drying aids
Naphthalenesulfonic acid-formaldehyde condensates are used as assistants in the drying of aqueous polymer dispersions. Also described is a process for preparing polymer powders by drying, using...
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6537366 |
Concrete admixture with improved durability and efflorescence control containing a highly resilient colorant
A composition for coloring concrete and methods for making the composition is provided, which includes a hydrophobic efflorescence control agent selected from the group consisting of calcium...
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6458870 |
Process for preparing an aqueous solution of sulfanilic acid modified melamine-formaldehyde resin and a cement composition
The present invention relates to a process for preparing an aqueous solution of sulfonated melamine-formaldehyde resin, and a cement composition in which the solution and a setting retarder are...
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6402832 |
Wallboard joint compound
The present invention is an improved wallboard joint compound comprising an inorganic joint compound such as, for example, gypsum, mixed with water, plus one or more additives selected to reduce...
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RE37655 |
Additive for, method of adding thereof and resulting cured cement-type concreations for improved heat and freeze-thaw durability
An additive for, a method of adding thereof to uncured mixes for and resulting cured cement-type concreations such as cured embodiments of concrete, marcadam, and roof-top shingles each exhibiting...
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6302955 |
Composition for improving freeze/thaw durability of masonry containing fatty acid-based efflorescence control agents
A composition for improving the freeze thaw durability of masonry concrete comprising (i) an alkylaryl polyether alcohol having the formula R-.O slashed.-(OCH 2 CH 2 ) x OH, wherein R is a C 4 ...
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6254804 |
Oxygen scavengers with reduced oxidation products for use in plastic films
An oxygen scavenger composition, for use in or with plastics materials, includes a polymer or oligomer having at least one cyclohexene group or functionality. The composition produces only low...
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6235809 |
Multi-functional additive for use in well cementing
This invention relates to a cement composition for cementing oil, gas and geothermal wells comprising: a cement; and an additive comprising a blend of a sodium silicate; water; a carrageenan...
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6176921 |
Cement dispersants and method of producing concrete by using same
A cement dispersant composed of water-soluble vinyl copolymers which include specified kinds of constituent units at specified ratios and of which the weight average molecular weight pullulan...
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6051635 |
Dowels made from thermosetting resins and process of making same
A dowel for use in the woodworking industry to secure two pieces of wood together is made of a composite, polymeric material comprising from about 4% to 90% by weight thermosetting resin and from...
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6028167 |
Use of phenolsulfonic acid-formaldehyde condensation products as drying aids
Phenolsulfonic acid-formaldehyde condensates are used as assistants in the drying of aqueous polymer dispersions. Also described are a process for preparing polymer powders by drying, using these...
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5824725 |
Method and composition for stabilizing soil and process for making the same
A water soluble chemical composition for use as a soil stabilizer, conditer and structuring agent includes a dispersing agent such as a polyanionic sulfonated urea-melamine formaldehyde condensate,...
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5814146 |
MDF cement compositions with improved impact strength
The invention concerns a MDF cement material showing better impact strength meant as an increase in the breaking total energy, by fibers addition.
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5753368 |
Fibers having enhanced concrete bonding strength
The bonding between concrete and fibers is enhanced by using a fiber coating material selected from certain glycol ethers, having at least three carbon atoms in an oxyalkylene group, and glycerol...
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5725656 |
Gypsum composition
This invention relates generally to a gypsum composition having improved setting and strength characteristics. More specifically, this invention relates to a gypsum composition comprising an...
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5714525 |
Preparation of friction elements and compositions therefor
Densified particles of friction ingredients which include an uncured mix of friction ingredients with a thermosetting binder resin and an effective amount of a liquid coreactive with the resin...
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5702828 |
Process for waterproofing gypsum materials
The invention provides a process for water-proofing gypsum materials which comprises adding, to a pulverulent gypsum plaster composition containing from 10 to 90% by weight of gypsum based on the...
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5674929 |
Cementitious compositions for layered applications
The interlayer adhesion and final strength of cementitious compositions which are applied in consecutive layers are improved by the incorporation in the compositions of an admixture which is a...
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5651817 |
Cement dispersant
When a cement dispersant comprising a polymer which is obtained by co-condensating monomers comprising monomer (A) and monomer (B) with formaldehyde, or a salt obtained by neutralizing the polymer,...
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5651816 |
Cement, cement products, molding material, concrete member and a method of producing the same
Cement comprising hydraulic cement and polymer precursor such as alcohol-soluble phenol resin precursor that is substantially anhydrous and generates water by polymerization.
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5594050 |
Cement composition containing chemically crosslinked polyvinyl alcohol (PVA)
The invention relates to a new, chemically crosslinked PVA. Its application is that of a fluid loss control agent in fluids used in the oil industry, in particular cement slurries, separating...
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5567750 |
Redispersible dispersion powder composition
The invention provides a redispersibte dispersion powder composition comprising a) a base polymer selected from the group consisting of vinyl ester polymers, styrene polymres, acrylate polymers and...
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5558709 |
Flow improving agents for binder suspensions containing cement
Disclosed is a flow improving agent for binder suspensions containing cement which is composed of a) amino-s-triazine-formaldehyde-sulfite condensation products having a molar ratio of...
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5550176 |
Room temperature setting carbonaceous cement with increased electrical conductivity and flexural strength
A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst, a liquid carbonizable component, and copper particles, which when treated with the catalyst will...
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5432212 |
Dispersant composition for cement having excellent property in inhibition of slump-loss
A cement admixture which when added to a cement composition, such as cement mortar or concrete inhibits slump-loss of the cement composition and improve its workability and applicability. The...
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5421881 |
Cement set retarding additives, compositions and methods
The present invention provides set retarding additives, set retarded hydraulic cement compositions including such additives and methods of using the cement compositions for cementing zones in...
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5407290 |
Connecting joint for electric furnace electrodes
A joint for rigidly and fixedly connecting in end-to-end relationship electrodes of graphite or carbon, whose ends comprise a socket with an internal screwthread into which is screwed a connector...
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5354792 |
Flowability improving agent, a process for the production thereof and a use thereof
The invention relates to a flowability improving agent comprising a combination, calculated on a dry product, of: A) 60-99% by weight of a sulphonated melamine-formaldehyde resin, a sulphonated...
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5334648 |
Emulsion polymers for use as a urea formaldehyde resin modifier
Emulsion copolymers, for use as urea formaldehyde resin modifiers, are formed from vinyl chloride monomers, softening monomers, and functional monomers. The copolymer when blended with formaldehyde...
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5262452 |
Oil well cementing formulations
An oil and gas well cementing composition has styrene/butadiene latex and a combination of nonionic and anionic surfactants for improved physical properties, especially fluid loss.
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5245001 |
Aminoarylsulfonic acid-phenol-formaldehyde condensate and concrete admixture comprising the same
The present invention relates to aminoarylsulfonic acid-phenol-formaldehyde condensate useful for incorporation into cementing compositions, for example, mortar, cement paste and the like, for...
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5233012 |
Production of novel condensates comprising bisphenols and aromatic aminosulfonic acids, condensates and dispersant, additive and water-reducing agent based thereon
Novel condensates comprising bisphenols and aromatic aminosulfonic acids, in particular, novel 4-aminobenzenesulfonic acid-2,2-bis (hydroxyphenyl)propaneformaldehyde condensates, and methods for...
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5185389 |
Latex modified mortar and concrete
A modified mortar or concrete composition in which a polymeric binding material is combined with sand, cement, and fine fillers. Use of the higher than previously considered functional ratio of...
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5179170 |
Dispersant and cement admixture
The dispersant composed of a water-soluble salt of either a copolymer of a component in naphtha oil and maleic anhydride or a partial esterification product of said copolymer has improved...
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5162403 |
Phenolic resin preforms and method of manufacturing them
Premoulding materials having long-term controllable B-stage characteristic, comprising phenol resins, optionally with reagents, additives and adjuvants, are characterized in that they contain...
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5102467 |
Novel cement additives and hydraulic cement mixes containing them
A hydraulic cement admixture capable of enhancing the latter stage set strength of the cured composition comprising certain mono- and disubstituted (dialkanolaminomethyl) phenols.
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5075358 |
Multiple purpose patching composition
A latex modified mortar or concrete material in which a polymeric or latex binding material is combined with a low shrinkage (gypsum) cement and fine fillers. Use of the low shrinkage cement and a...
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5045385 |
Fire retardant composition for building panels and door cores
A fire retardant composition and method wherein the composition includes 30 to 75% of an inert mineral filler selected from perlite and vermiculite, 10 to 40% by weight of glass fibers having a...
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4946505 |
Process for dyeing concrete
Coloring materials used in a process of dyeing concrete consist of pigment granules other than compacted or briquetted granules. The granules consist of one or more pigments, one or more binders...
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4891071 |
Cementitious composite material with vacuum integrity at elevated temperatures
The temperatures at which the cementitious composite materials described in U.S. Pat. No. 4,482,385 can be used as tool or mold materials are extended by a treatment which comprises heating said...
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4873145 |
Resin-coated aggregates
A substantially water-resistant resin-coated aggregate for use in concrete includes a porous aggregate body, such as an artificial light weight aggregate, with an elastic layer made of a phenol...
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4820766 |
Highly stable sulfonated melamine-formaldehyde condensate solution
A highly stable melamine-formaldehyde condensate solution for use as superplasticizer additives for cement or the like is produced by condensing melamine and formaldehyde in an aqueous medium,...
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