Abstract: A roof sloping compound for creating an auxiliary slope over a wide variety of roof membranes and substrates. The compound includes a dry mixture of aggregate, cement and a redispersible dry polymer adapted to be mixed with water to define a substantially self-leveling consistency enabling the compound to be readily screeded into place in a desired thickness. The aggregate comprises dolomite or limestone and the redispersible dry polymer can comprise a binder based on a copolymer of ethylene vinyl acetate. In a lightweight embodiment of the compound, the aggregate includes lightweight fillers comprising perlite and low density glass granules and a superplasticizer is added to the dry mixture to reduce water demand.

Abstract: Sealant compositions comprising: a wellbore treatment fluid; a set modifier; and, a polymeric component that inhibits release of the set modifier; wherein exposure to ionizing radiation causes degradation of the polymeric component resulting in release of the set modifier and an increase in the mechanical strength of the sealant composition.

Abstract: The invention relates to gypsum-containing construction material compounds, containing gypsum, if necessary one or more polymers, if necessary one or more aggregates, and if necessary one or more additives, characterised in that the gypsum-containing construction material compounds contain one or more types of cement and one or more types of pozzolana.

Abstract: Disclosed is a cementitious material that possesses favorable adhesion and compressive strength properties and is suitable for cold weather applications. Disclosed also are methods for the manufacture and use of the material.

Abstract: The present invention relates to a current composition for cementing oil or gas wells. The composition comprises calcium aluminate cement in which the proportion of HC203 is at least 50% by weight, dispersant, microsilica, mineral particles, water and optionally a retarder.

Abstract: The invention pertains to improving the workability of an aqueous formulation with a hydraulic binder base using a combination between at least one comb-branched copolymer having a (meth)acrylic skeleton, onto which are grafted side-chains terminated by a hydrophilic group, and at least one comb-branched copolymer having a (meth)acrylic skeleton, onto which are grafted side-chains terminated by a hydrophobic group.

Abstract: The invention relates to processes for producing protective colloid-stabilized polymers based on (meth)acrylate esters in the form of their aqueous dispersions and water-redispersible polymer powders by means of free-radically initiated emulsion polymerization of one or more monomers from the group consisting of the esters of acrylic acid or methacrylic acid and optionally one or more further monomers which are copolymerizable therewith, in the presence of one or more protective colloids, and optionally drying of the resulting aqueous dispersion, characterized in that the emulsion polymerization is carried out in the presence of one or more fully hydrolysed 1-alkylvinyl ester-vinyl ester copolymers as protective colloid.

Abstract: Cement compositions and processes for reducing air entrainment in a cement composition generally include mixing a hydraulic cement with a defoamer compositions including one or more organic acid ester polymers selected from an organic acid ester of polyethylene oxide polymer, an organic acid ester of polypropylene oxide polymer, and a mixture thereof. The compositions may further comprise an organic acid ester of an ethylene oxide-propylene oxide block copolymer.

Abstract: A comb polymer that is a dispersant in a binder composition includes an alkaline activating agent, wherein the activating agent is intended for activation of a latently hydraulic and/or puzzolanic binder, and wherein the comb polymer has a polymer backbone formed from a plurality of backbone monomers and a plurality of polymeric side chains each formed from a plurality of side chain monomers and bonded thereto, and wherein at least some of the backbone monomers have one or more ionizable groups, and features a structure constant K of the comb polymer, defined as K=[(N?1)z]2/nP915N3/5×105, at least equal to 70, where n is the average number of side chains per comb polymer molecule, N is the average number of backbone monomers per side chain, P is the average number of side chain monomers per side chain, and z is the average number of ionizable groups per side chain-free backbone monomer.

Abstract: A particulate suspending agent may be useful for mitigating particulate settling in wellbore applications with high-temperature and/or at near-neutral and higher pH values. Methods of treating a wellbore may include providing a treatment fluid comprising an aqueous liquid, a plurality of particulates, and a particulate suspending agent, wherein the particulate suspending agent comprises a crosslinked polymer particulate formed by a reaction comprising a first monofunctional monomer and an orthoester crosslinker, the orthoester crosslinker comprising an orthoester linkage and at least two crosslinking moieties; and placing the treatment fluid in a wellbore penetrating a subterranean formation.

Abstract: The present invention relates to a solid composition containing calcium silicate hydrate and at least one water-swellable polymer which can form a hydrogel, and also to a process for preparing the composition, to the use thereof as a setting accelerator, and as a grinding aid in cement production. It also relates to building material mixtures which comprise the compositions.

Abstract: Ultra-high-performance cementitious materials are made using suitably functionalized and relatively low-cost carbon nanofibers and graphite platelets. Polyelectrolytes and surfactants are physisorbed upon these graphite nanomaterials in water, and dispersion of nanomaterials in water is achieved by stirring. Stable and well-dispersed suspensions of nanomaterials in water are realized without using energy-intensive and costly methods, and also without the use of materials which could hinder the hydration and strength development of ultra-high-performance cementitious materials. The water incorporating dispersed nanomaterials is then mixed with the cementitious matrix and, optionally, microfibers, and cured following standard concrete mixing and curing practices. The resulting cementitious materials incorporating graphite nanomaterials and optionally microfibers offer a desired balance of strength, toughness, abrasion resistance, moisture barrier attributes, durability and fire resistance.

Abstract: Claimed is a cationic copolymer and also its use as an admixture agent for building product systems, especially based on calcium sulfate. The copolymers of the invention effectuate accelerated setting behavior in clay-containing as well as non-clay-containing gypsums and they enable uncurtailed water reduction performance by dispersant agents used at the same time with the copolymers. The clay fractions in the gypsum system are masked by the cationic copolymer, and so the building product mixture exhibits properties of a building product mixture not containing clay. The copolymers are used as a formulation and also together with retarders.

Abstract: The invention relates to a process for the preparation of a polymerization mixture suitable as a dispersant and comprising a copolymer. In the process, a vinyloxyalkylpolyether derivative is reacted with an acid monomer derivative with formation of the copolymer in the presence of a free radical polymerization initiator by free radical polymerization, the free radical polymerization taking place in a medium which contains less than 25% by weight of water and in totality more than 60% by weight of copolymer, vinyloxyalkylpolyether derivative and acid monomer derivative.

Abstract: Polymers P as dispersants, in particular as liquefiers, for hydraulically setting systems, and hydraulically setting systems including the polymer P. The polymer P includes at least one acid unit, at least one ester unit, and at least one unit containing terephthalate or naphthalate.

Abstract: The subject matter of the invention are coated aggregates for producing concrete and methods for the production thereof. The invention also relates to concrete compositions for producing concrete and concrete provided with aggregates, production methods and the use of organic polymers for the improvement of the stability of concrete.

Abstract: The invention relates to a process for the preparation of copolymer in a continuous mode of operation in a polymerization apparatus, comprising a polymerization reactor having feed lines and an outflow, free radical polymerization initiator, an acid monomer and polyether macromonomer being passed as monomeric starting materials into the polymerization reactor through the feed lines, initiator, monomeric starting materials and copolymer-containing reaction composition thermostated at ?20 to +120° C.

Abstract: The invention relates to a copolymer comprising a main hydrocarbon chain and side groups including carboxylic groups and polyoxyalkylate groups, characterized in that it further includes gem-bisphosphonate groups, an admixture for suspensions of mineral particles comprising said copolymer and to a method for preparing said copolymer. Finally it relates to the use of said copolymer for fluidifying and maintaining fluid, suspensions of mineral particles and for reducing the sensitivity of hydraulic compositions to clays and alkaline sulfates. Finally it relates to a composition of mineral particles comprising this copolymer.

Abstract: The present disclosure describes a self-consolidating concrete (SCC) mixture having a compressive strength of at least 25 MPa at 28 days of age. In accordance with one embodiment, there is provided an SCC mixture, comprising: a mixture of coarse aggregate (CA), fine aggregate (FA), very fine aggregate (VFA), Portland cement or Portland limestone cement, an ASTM C494 Type F polycarboxylate ether high range water reducer, and water, wherein the VFA has a particle size distribution in which 95% to 100% passes a 2.5 mm sieve and in which 20% to 100% passes a 75 ?m sieve.

Abstract: The buoyancy control material for subsea main pipelines and high-density buoyancy control material for subsea main pipelines are suggested predominantly for use while manufacturing pipes for subsea pipeline installations. Creation of a buoyancy control material with a density greater than 2800 kg/m3 and the required mobility is an engineering problem solved by this invention. The buoyancy control material for subsea main pipelines contains cement, filler, plasticizing agent and water.

Abstract: An improved modular building panel and system for building construction is disclosed. The improved modular building panel comprises a novel honeycomb or lattice core comprising multiple layers of corrugated, preferably metal, components mechanically connected by any means known in the art, but which may be chemical bonding. External cladding layers comprising a novel cement mix comprising, in a preferred embodiment, Portland cement, silica sand, perlite, glass beads, and water, in combination with the honeycomb structure, provide a lightweight, highly durable, low-cost, projectile resistant, highly insulating, water, mold and mildew resistant, wind resistant novel modular wall system which is adapted for use in commercial, residential, and other construction and which provides superior security to the user. The modular building panel and system of the invention may be utilized for walls, roofs, floors, bridges, or other structures.

Abstract: A paving material for filling gaps between paving blocks or the like, the paving material comprising a powdered or granulated mixture of: inert particulate; a water-soluble resin formable from a polymerisation reaction between formaldehyde and an at least difunctional nucleophile; and a water-soluble acid. The paving material is filled into gaps between blocks and then liquid water is applied thereto, or the sand is exposed to ambient humidity (gaseous water). Upon contact with the water, the resin coats the sand and then sets hard, thereby stabilising the block paving.

Abstract: A method includes using a composition in the production of cement, the composition including at least one dispersing agent and at least one sacrificial molecule to partially or totally retain the properties of the dispersing agent; being either in the form of a liquid solution, or an emulsion or a suspension; the quantity of the sacrificial molecule in the composition representing at least 5% by mass of the mass of dispersing agent; and being introduced before or during the grinding of the clinker.

Abstract: The present invention relates to cement dispersant that is a copolymerization product of a first monomer (A) comprising a carboxylic acid, a second monomer (B) comprising an alkoxylated allyl alcohol sulfate, and, optionally, a third monomer (C) comprising an alkoxylated allyl alcohol. The cement dispersant according to the invention provides improved slump life properties and water reduction properties in cement admixtures.

Abstract: The present invention provides a dispersant for a hydraulic composition containing N-methyldiethanolamine and a specific (meth)acrylic acid copolymer as a polycarboxylic acid copolymer dispersing agent to increase the fluidity of a hydraulic composition.

Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly(diallyldimethylammonium chloride). The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.

Abstract: The invention provides a set gypsum-containing product having increased resistance to permanent deformation and a method for preparing it comprising forming a mixture of a calcium sulfate material, water, and an appropriate amount of one or more enhancing materials chosen from condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates, each of which comprises 2 or more phosphate units. The mixture is then maintained under conditions sufficient for the calcium sulfate material to form a set gypsum material.

Abstract: An isolation device with seal element having substantial elongation properties at a time of setting and insubstantial elongation properties at time of drill out. That is, the seal element may be constructed of materials that are geared toward providing effective temporary sealing, for example to support stimulation operations. The seal is also tailored to change elongation properties over time such that upon sufficient exposure to downhole conditions the elongation properties may be substantially reduced. Thus, drillable removal of the device and seal element may be readily attained without undue concern over stretchable tearing of the element leading to an accumulation of large debris left behind in the well.

Abstract: This invention relates to an additive composition for a hydraulic composition, which contain a specific copolymer (A) and a compound (B) selected from a specific glycol ether-based compound and a specific glycerin derivate-based compound.

Abstract: A thickened composition comprising a polymer, a divalent ions source, water and cement is disclosed. Such composition enables fluid loss reduction and higher gel strength. This may be useful for treating a well for example as a fluid spacer or a scavenger; this may also be used a hydraulic fracturing fluid.

Abstract: The invention provides methods for producing building material formulations in the form of dry mixers, characterized in that (a) one or more dust reducer agents are applied to one or more inorganic supports, to form supported dust reducer agents, the inorganic supports having a porosity of ?65%, and the dust reducer agents being selected from the group consisting of fatty acids, fatty acid derivatives, natural oils, hydrocarbons and polysiloxanes composed of units of the general formula RcSi (OR?)d(OH)eO(4-c-d-e)/2 with c=0 to 3, d=0 to 3, e=0 to 3, in which the sum c+d+e is not more than 3.

Abstract: Cementitious compositions and processes for preparing and using the cementitious compositions are provided. The cementitious compositions are characterized by the property of a reduced or an attenuated water vapor emission from a cementitious mix and a concrete formed therefrom. Certain cementitious compositions are characterized by the property of accelerated drying while still maintaining good workability. Methods of improving water retention and surface drying of concrete, including lightweight concrete are provided. A water soluble ionic salt may be used to sequester water within the pores and capillaries of the cement paste and/or porous lightweight aggregate. In some examples, the salt may be added directly to concrete or aggregates may be infused with a water-salt solution to provide treated porous aggregates having improved water saturation and water retention.

Abstract: The invention relates to a polymer comprising the following units: and the side chains comprising R2 groups, to its preparation methods and to its uses as a thinner in hydraulic compositions.

Abstract: The present invention relates to an aqueous dispersion comprising (a) at least one (meth)acrylic polymer; (b) at least one vinyl acetate polymer selected from vinyl acetate homopolymer and vinyl acetate copolymers comprising in polymerized form vinyl acetate and ethylene; (c) water; and (d) optionally up to 50% by weight of an inorganic filler, based on the total weight of the aqueous dispersion, wherein the weight ratio of (meth)acrylic polymer(s) (a) to vinyl acetate polymer(s) (b) is from 70:30 to 30:70. The aqueous dispersion may be used as a joint compound or sealing compound.

Abstract: An anti-foam additive for a cement composition, including a fatty alcohol ester that is soluble in an aqueous medium at acidic pH, and hydrolysable in a basic medium, i.e. when the ester is incorporated into the cement composition, while releasing an active anti-foam molecule. This ester is preferably a fatty alcohol ester of a quaternary ammonium carboxylate, that is soluble in an aqueous solution of a superplasticizer, such as a polycarboxylate with poly(ethylene oxide) side chains. The additive can used for reducing the amount of air entrained during mixing or blending of mortars or concretes.

Abstract: The present invention pertains to an aqueous solution of comb-branched polymers, having a (meth)acrylic skeleton functionalized by side-chains with hydrophilic alcoxy- or hydroxy-polyalkylene glycol functions, said solution remaining stable and workable at dry solids content levels greater than 60% of its weight. The invention also pertains to a method for manufacturing such solutions, as well as their use as a plasticizing agent, and hydraulic binder-based compositions containing them.

Abstract: A method for producing a setting retarder for hydrate-forming binders, wherein a) a first reactant A, comprising an amino acid and/or an amino acid derivative, is reacted with b) a second reactant C, including an amine-free carboxylic acid and/or an amine-free carboxylic acid derivative, to form a reaction product, characterized in that the reaction is carried out at a pH value of 7.5-11.5 and the pH value is held constant in the specified range of 7.5-11.5 during the reaction. In order to hold the pH value constant in the specified range and to avoid fluctuations, in one process step an aqueous solution of reactant A is prepared and a pH of 7.5-11.5, preferably 8-11, in particular 8.5-10.5, is set by adding a base.

Abstract: A roof sloping compound for creating an auxiliary slope over a wide variety of roof membranes and substrates. The compound includes a dry mixture of aggregate, cement and a redispersible dry polymer adapted to be mixed with water to define a substantially self-leveling consistency enabling the compound to be readily screeded into place in a desired thickness. The aggregate comprises dolomite or limestone and the redispersible dry polymer can comprise a binder based on a copolymer of ethylene vinyl acetate. In a lightweight embodiment of the compound, the aggregate includes lightweight fillers comprising perlite and low density glass granules and a superplasticizer is added to the dry mixture to reduce water demand.

Abstract: The present invention discloses additive compositions, cementitious compositions, and methods for controlling air in cementitious compositions in which colloidal nano-particles are used for stabilizing a water-dispersible defoamer within a cement-dispersant-containing aqueous additive formulation for modifying hydratable cementitious compositions such as cement or concrete.

Abstract: A retarder aid increases the applicable temperature range of phosphonate/borate cement-retarder systems to at least 302° C. (575° F.), and 207 MPa (30,000 psi). The retarder aid comprises a terpolymer of styrene sulfonate, maleic anhydride and acrylate of ethylene oxide. Cement slurries containing the retarder and retarder aid may be used for both primary-cementing and remedial-cementing applications.

Abstract: A cement retarder system for use in underground wells included a borate compound, an organophosphonate salt, and a copolymer formed from AMPS and a monomer selected from the group consisting of acrylic acid, acrylamide and mixtures thereof.

Abstract: The invention relates to comb polymers made from maleic acid or derivatives thereof, allyl ethers, and vinyl acetate, and the preparation thereof by free-radical polymerization at a reaction temperature of 10° C. to 50° C. The invention relates further to the use of such comb polymers to improve the workability of hydraulically setting compositions.

Abstract: A process for the preparation of a copolymer in a semicontinuous mode of operation in a polymerization apparatus containing a polymerization reactor connected to a metering device, in each case acid monomer being initially introduced into the metering device and polyether macromonomer and water into the polymerization reactor, acid monomer being metered from the metering device into the polymerization reactor, the metering of the acid monomer into the polymerization reactor being effected in such a way that first a polymerization pH is established in the aqueous medium and then, until the conversion of 70 mol % of the polyether macromonomer initially introduced into the polymerization reactor, acid monomer is passed into the polymerization reactor in an amount per unit time such that the pH in the aqueous medium deviates by not more than ±0.3 from the initially established polymerization pH.

Abstract: The present invention provides methods, admixture compositions for treating clay-bearing aggregates used for construction purposes, and aggregate compositions for construction purposes. The clay-bearing aggregates are treated with a cationic copolymer made from two and preferably three different monomer components. Cementitious compositions containing the treated aggregates are also described.

Abstract: A process for the preparation of a copolymer in semicontinuous operation in a polymerization apparatus including a polymerization reactor connected to a metering device, acid monomer being initially taken in the metering device and polyether macromonomer and water in the polymerization reactor, acid monomer being metered from the metering device via an acid monomer metering line into the polymerization reactor, a portion of the copolymer-containing aqueous medium being passed continuously during the free radical polymerization from the polymerization reactor via a reaction mixture line which is connected via a mixing device to the acid monomer metering line, the discharged copolymer-containing aqueous medium being mixed with the acid monomer in the mixing device during the metering of the acid monomer and being recycled to the polymerization reactor after the mixing via the acid monomer metering line.

Abstract: A process for the preparation of a copolymer in semicontinuous operation in a polymerization apparatus, comprising a polymerization reactor connected to a metering device, acid monomer being initially taken in the metering device and polyether macromonomer, acid monomer and water in the polymerization reactor, acid monomer being metered from the metering device into the polymerization reactor, the metering of the acid monomer being effected with the proviso that at least 70 mol % of the acid monomer metered in altogether are metered in the course of 5 to 19 minutes at a metering rate that is constant or varies to a limited extent.

Abstract: Cement compositions comprising polymeric particles with inorganic fillers have utilities in the context of well cementing. The fillers improve bonding between the polymeric particles and the cement matrix leading to improved mechanical parameters of the cement system. The filled particles may also lead to improved mixability and slurries that are easier to optimise.

Abstract: A non-ionic polyether-polyester copolymer for extending workability to a cementitious mixture containing hydraulic cement and water, wherein the copolymer includes residues of at least the following monomers: Component A including an ethylenically unsaturated carboxylic acid ester monomer having a moiety hydrolysable in the cementitious mixture, wherein the hydrolyzed monomer residue has an active binding site for a component of the cementitious mixture; and, at least one of: Component B including an ethylenically unsaturated, carboxylic acid ester or alkenyl ether monomer having at least one C2-4 oxyalkylene side group of about 1 to 30 units; or, Component C including an ethylenically unsaturated, carboxylic acid ester or alkenyl ether monomer having at least one C2-4 oxyalkylene side group of 31 to about 350 units; wherein the molar ratio of Component A to the sum of the molar ratios of Component B and Component C is about 1:1 to about 10:1.

Abstract: The invention relates to a copolymer which is suitable as a superplasticizer for hydraulic binders and comprises 5 to 55 mol % of an isoprenol polyether derivative structural unit, 2 to 90 mol % of an acrylic acid derivative structural unit and 2 to 90 mol % of a hydroxyalkyl acrylate structural unit.

Abstract: The invention relates to a method for producing comb polymers, wherein at least one polycarboxylic acid or a salt thereof is esterified with at least one monohydroxy polyether, comprising the following steps: (a) preparing a reaction mixture containing at least one polycarboxylic acid; (b) heating the reaction mixture to at least 80° C.; (c) adding a base; and (d) esterifying the mixture at a reaction temperature of at least 80° C. obtaining a comb polymer, wherein at least one monohydroxy polyether is added to the reaction mixture in step (a) and/or (b). The invention further relates to comb polymers, cement compositions, molded bodies, and uses of comb polymers.