Abstract: Mixed anodic/cathodic corrosion inhibitors for use in hydraulic cement, comprising a) a first component consisting of an amount of alkali or alkaline earth metal nitrite sufficient to inhibit anodic corrosion; and b) a second component comprising an agent that acts to increases the anodic corrosion performance of the first component; wherein said first and second components are present in a weight ratio of from about 1:0.1 to 1:1. Optionally an EO/PO superplasticizer can be incorporated where the weight ratio of the first component, i.e., nitrite, to EO/PO superplasticizer is from about 1:0.005 to 1:0.25, with the surprising benefit of increased protection against cathodic corrosion without harming the level of anodic corrosion inhibition.

Abstract: Novel water-soluble linear copolymers of vinylacetate with monomeric addition products of amines, amino acids, amino groups containing aromatic sulfonic acids, amino alcohols of maleic anthydride. The copolymers are useful as fluidizers in water containing solid matter suspensions.

Abstract: The present invention is directed to an imidized polycarboxylic acid polymer useful as a cement admixture, to improved cement compositions containing said polymer and to a process of forming the same.

Abstract: A floor paint composition superior in resistance to oil and solvents, and in early strength. The composition is mainly composed of a synthetic resin emulsion based on an from anion copolymer obtained from the copolymerization of .alpha.-type hemihydrate gypsum, cement and ethylene unsaturated monomer. The ratio of weight of .alpha.-type hemihydrate gypsum to cement is between 80:20 and 95:5. The ratio of the solid content of the synthetic resin relative to 100 parts by weight of the mixture of .alpha.-type hemihydrate gypsum and cement is between 15 and 35 parts by weight. The anion copolymer contains at least one unit of a monomer selected from the group consisting of ethylene unsaturated carboxylic acid, ethylene unsaturated sulfonic acid and ethylene unsaturated phosphonic acid. The copolymer can include an ethylene unsaturated monomer having at least one organic silicon radical. The synthetic resin emulsion can include epoxy silane.

Abstract: The present invention provides a thermoplastic cement composition, characterized in that the composition can be easily processed thermoplastically during molding and that when the cement component constituting the composition is hardened by the absorption of water, the composition loses its thermoplasticity to give a product having excellent heat resistance and other properties.The thermoplastic cement composition comprises 100 parts by weight of a thermoplastic, 50 to 600 parts by weight of a hydraulic cement and/or an air-hardening cement and 0.1 to 20 parts by weight of a hydrophilic substance.

Abstract: A process for maintaining or increasing the tensile strength of fibers of aromatic copolyamides which are formed from a major portion of para-monomers and are soluble in organic aprotic and polar solvents. The process involves storing the fibers in alkaline media after production by wet or dry spinning processes, after treatment of the dry or wet spun fibers, and storing the fibers in an aqueous environment having a pH of at least 10. The tensile strength of the fibers is retained or increased.

Abstract: Substances useful as water reducing and superplasticizer additives for cement compositions are formed by reaction of carboxylic acid polymers with polyethers of C.sub.2 -C.sub.4 epoxides wherein partial cleavage of the polyether and esterification of the polyether and the cleavage products thereof by the other reactant are achieved. In one embodiment, a sulfonic acid is used to catalyze the reaction of poly(acrylic acid) and a monofunctional ethylene oxide-propylene oxide copolymer at a temperature in excess of 140.degree. C.

Abstract: A random copolymer in free acid or salt form having the following types and numbers of monomer units; ##STR1## in which M is hydrogen or a residue of a hydrophobic polyalkylene glycol or polysiloxane,R is an C.sub.2-6 alkylene radical,R.sub.1 is a C.sub.1-20 alkyl, C.sub.6-9 cycloalkyl or phenyl group,x,y and z are numbers from 1 to 100,m is a number from 1 to 100,n is a number from 10 to 100,with the provisos, thati) the ratio of x to (y+z) is from 1:10 to 10:1 inclusive,ii) the ratio of z:y is from 5:1 to 100:1, andiii) m+n=15-100.The copolymers are useful as additives in cementitious compositions.

Abstract: The subject invention is directed to a cement admixture composition composed of certain alkylene glycols and copolymers of alkenyl ether and maleic anhydride. The present admixture provides a means to inhibit drying shrinkage of cement compositions while enhancing the compressive strength of the set composition.

Abstract: A polymer concrete pipe liner is formed from a fluidized, but substantially waterless cement containing mixture applied to the pipe interior. The mixture contains inorganic cement particles, a liquid styrene mixture and one or more poly-olefinically unsaturated co-monomers in a greater amount than the styrene. The mixture substantially excludes acrylonitrile and acrylamide. The co-monomers are preferably selected from a group including trimethylolpropane-trimethacrylate, trimethylolpropane-methacrylate, divinyl benzene, and hexadiene. Mixing liquid and solid aggregate components forms a slurry which is transferred to a pipe interior and centrifugally cast to form the liner. The composition avoids the need for high temperature curing the toxic reactive unsaturates to co-polymerize and cross-link polystyrene.

Abstract: Disclosed herein is a met,hod for adjusting the consistency of concrete mix by adding an water-absorbing polymeric material or a thickening agent of carboxymethylcellulose to a fresh concrete mix.

Abstract: 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 fluids, or "spacers", and drilling muds. Its advantages are that it does not delay the setting of the cement, that it has high temperature properties that are relatively insensitive to external conditions.

Abstract: The present invention provides a one-piece solid golf ball or a two or more piece solid golf ball which comprises an inner core and a cover covering the inner core. The one-piece solid golf ball is formed from a rubber composition which comprises:a base rubber,vulcanized rubber powder, anda vulcanizing agent.The two or more piece solid golf ball comprises an inner core and a cover covering the inner core, the inner core being composed of either one uniform rubber material or a combination of a center and one or more outer layers disposed over the center, wherein one or more rubber portions of the inner core are formed from a rubber composition comprising:a base rubber,vulcanized rubber powder, anda vulcanizing agent.

Abstract: The present invention provides a one-piece solid golf ball or a two or more piece solid golf ball which comprises an inner core and a cover covering the inner core. The one-piece solid golf ball is formed from a rubber composition which comprises:a base rubber,vulcanized rubber powder, anda vulcanizing agent.The two or more piece solid golf ball comprises an inner core and a cover covering the inner core, the inner core being composed of either one uniform rubber material or a combination of a center and one or more outer layers disposed over the center, wherein one or more rubber portions of the inner core are formed from a rubber composition comprising:a base rubber,vulcanized rubber powder, anda vulcanizing agent.

Abstract: The invention provides a redispersibte dispersion powder composition comprisinga) a base polymer selected from the group consisting of vinyl ester polymers, styrene polymres, acrylate polymers and vinyl chloride polymers,b) from 2 to 15% by weight, based on the weight of the base polymer, of polyvinyl alcohol having a degree of hydrolysis of from 85 to 95 mol % and a Hoppler viscosity of from 2 to 25 mPa.s,c) from 3 to 30% by weight, based on the total weight of polymeric components, of fine antiblocking agent, andd) from 1 to 15% by weight, based on the weight of the base polymer, of an aminofunctional polyvinyl alcohol soluble in cold water and having a Hoppler viscosity of from 1 to 20 mPa.s and a saponification number of from 0 to 250, which comprises residues of aminofunctional vinyl units of the formula CH.sub.2 .dbd.CH--(CH.sub.2).sub.x --NH.sub.2, wherein x is a number of from 0 to 4.

Abstract: Composition adapted to improve the rheological properties of cement-based products and more especially to increase the duration of the workability of concrete ready to use, characterized in that it comprises, in the form of a ternary mixturea superplasticizing or water-reducing agent having a dispersing effect,a stabilizing agent capable of forming a chelate with the calcium ions of the cement-based product, anda polycarboxylic polymer dispersing agent.

Abstract: A cement admixture composed of a low molecular weight oxyalkylene compound and a comb polymer having carboxylic acid groups and oxyalkylene units therein.

Abstract: A concrete treating composition including an aqueous solution of a polymer binder and water is disclosed. The composition is added to unset concrete during various concrete finishing steps in a process to treat the upper region of the concrete and protect the finished concrete from staining, wear, erosion, damage from chemicals and weathering. In an alternative embodiment, a wetting agent is also added to the composition.

Abstract: 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 wells. The set retarding additives are copolymers or terpolymers containing monomer units formed from one of maleic acid, itaconic acid, fumaric acid, citraconic acid and mesaconic acid along with other monomer units.

Abstract: A combined alumina, cement and gypsum product comprises 100 parts by weight of alumina cement, 10 to 100 parts by weight of an aqueous polymer precursor emulsion (Component A), and 15 to 600 parts by weight of a hemi-hydrate gypsum (Component B). Component A preferably comprises a thermosetting acrylic resin, and Component B is preferably an alpha-hemihydrate gypsum or an anhydrous or retarded plaster. Aggregates, reinforcing materials or other additives may be incorporated into the product. The product is preferably prepared by mixing together Component A and the alumina cement to form a precursor slurry, then mixing together the precursor slurry and Component B, and allowing the mixture to cure.

Abstract: The present invention relates to an improved dental flask that is suitable for use in microwave, irradiation processing of dentures, obturators and other dental prosthesis in which the dental flask is manufactured from a composition that is a mixture of a predominant amount of a liquid, polymerizable plastic resin mixed with lesser amounts of a gypsum-based material and plastic resin fibers.

Abstract: Binder premix or primer compositions comprise (a) vinyl esters and/or unsaturated polyesters containing characteristic linkages, --COO--CH.sub.2 --CHOH--CH.sub.2 O--, (b) monofunctional and/or polyfunctional vinyl monomers and/or monofunctional and/or polyfunctional resins, and (c) monofunctional and polyfunctional vinyl monomers and/or monofunctional and/or polyfunctional resins which have very high group molar attraction constants. The primer or binder premix is utilized in the repair of a bridge, highway, roadway, airport runway, parking structure, or patio and similar type structures.

Abstract: Set retarded cement compositions and methods of using the compositions for cementing zones in wells at temperatures in the range of from about 200.degree. F. to about 450.degree. F. are provided.

Abstract: A cement additive composed of a crosslinked polymer in which, between main chains having a water-soluble polymer structure of a molecular weight from 500 to 100,000, there is a bond having as a structural unit at least one divalent group having the following formula (I): ##STR1## where R.sup.1 and R.sup.2 independently denote any one of the following: ##STR2## where R.sup.1 is not required, if R.sup.2 is the following: ##STR3## and where R and R' independently denote an alkyl group of carbon number of 1 to 5.

Abstract: Improved set retarded cement compositions for cementing subterranean zones in wells at low temperatures having excellent short term compressive strength development and methods of using such compositions are provided. The compositions are basically comprised of a hydraulic cement, water and a copolymer containing 2-acrylamido-2-methylpropane sulfonic acid in an amount in the range of from about 65 to about 85 mole percent and acrylic acid in an amount in the range of from about 15 to about 35 mole percent having an average molecular weight below about 5000.

Abstract: 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 admixture is composed of copolymers from an alkenyl ether, a polyalkenyl ether and maleic anhydride.

Abstract: Resurfacing surfaces of highways, roads, etc. to provide skid-resistant surface by preparing polymer concrete composition containing a curable polymer composition containing ethylenically unsaturated polymer having carbon-bonded carboxyl groups and/or hydroxyl groups and at least one reactive thickener comprising Group IIA metal oxide or hydroxide or a polyisocyanate; mixing the resulting mixture with aggregate; coating said surface with the resulting composition; compacting and shaping the resulting composition and curing the compacted, shaped composition on said surface.

Abstract: 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 wells. The set retarding additives are graft copolymers or terpolymers comprised of the condensation polymer product of a ketone, aldehyde and a compound which introduces acid groups into the polymer having grafted thereto a monomer selected from the group consisting of acrylic acid, vinyl phosphonic acid, methacrylic acid, maleic acid and itaconic acid or one of the foregoing monomers and a second monomer of 2-acrylamido-2-methylpropane sulfonic acid.

Abstract: 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.

Abstract: A chromating treatment composition particularly suitable for preparing aluminum and stainless steel for clear coating comprises water, anions containing hexavalent chromium, trivalent chromium cations, phosphate ions, dry process finely divided silica, and acrylic and/or methacrylic acid polymer or copolymer in such amounts that:(A) the concentration of the total of hexavalent and trivalent chromium atoms is in the range from 1 to 60 g/L;(B) the (trivalent chromium atom)/(hexavalent chromium atom) weight ratio is in the range from 0.6 to 2.5;(C) the (phosphate ion)/(total chromium atoms in hexavalent chromium ions and trivalent chromium ions) weight ratio is in the range from 0.5 to 4.5;(D) the (dry process silica)/(total chromium atoms in hexavalent chromium ions and trivalent chromium ions) weight ratio is in the range from 0.1 to 5.

Abstract: There are provided compositions and processes for enhancing the initial and long term shear strength and initial tip stability of process wastes. The process wastes are aqueous dispersions such as the slurry tailings from mining operations. The compositions are comprised of the process waste, cement and a water absorbent polymer which is a mixture of Mannich acrylamide polymers and dimethyldiallyammonium halide polymers.

Abstract: Improved cement compositions and methods of using such compositions in carrying out construction and remedial operations in oil and gas wells at high temperatures are provided. The compositions are basically comprised of hydraulic cement, sufficient water to form a pumpable slurry, and a dispersing and stabilizing additive comprised of an ethoxylated alkali metal salt of an alkyl polyether sulfonate.

Abstract: Cement dispersion agents composed of water-soluble vinyl copolymers obtained by aqueous solution radical polymerization of five specified kinds of monomers at a ratio within a specified range can provide improved fluidity to high-strength hardened concrete and mortar with extremely low water-to-cement ratio.

Abstract: Cement admixture compositions formed from alkenyl ether/maleic anhydride copolymers having specific molecular structures have been found to impart a high degree of slump loss over a sustained period of time while not causing any significant set retardation of the treated cement based composition.

Abstract: An aqueous solution, for use as a cement dispersing agent, of a polymer salt, which is formed by reacting a polycarboxylic acid with a nitrogenous acrylic polymer.

Abstract: A method for producing a liquid crystalline polyester, which comprises reacting compounds of the following formulas: ##STR1## and a dicarboxylic acid of the following formula ##STR2## wherein R.sup.1 is a bivalent aromatic hydrocarbon group having from 6 to 18 C atoms as starting material, for polycondensation in a molten state.

Abstract: A process for producing a carpet is disclosed, comprising laminating a backing material composition comprising 100 parts by weight, on a resin solid basis, of an aqueous emulsion of a resin having a glass transition point of not higher than 5.degree. C., from 120 to 400 parts by weight of hydraulic inorganic cement, and up to 600 parts by weight of a non-hydraulic inorganic filler on a carpeting surface base material and heating the laminate to harden and dry the backing material composition. A carpet in which a carpeting surface base material and a backing material (and a carpeting back base material, if used) are firmly and integrally bonded can easily be obtained. The carpet has excellent properties, such as flexibility (softness), dimensional stability (resistance to shrinkage), fit to a floor, and workability, in a good balance.

Abstract: A hydraulic cement mix including hydraulic cement, aggregate, sufficient water to effect hydraulic setting of the cement, and a polyamidoamine additive, the additive being present in an amount sufficient to increase the bonding strength of the hardened mix. Generally, the additive is present in a total amount of about 0.025 to 0.25% by weight based upon the weight of the cement, preferably in an amount in the range of about 0.075 to 0.15% by weight.

Abstract: A liquid crystalline polyester comprising dicarboxylic acid units of the following formula (1): ##STR1## wherein R.sup.1 is a bivalent aromatic hydrocarbon group having from 6 to 18 carbon atoms, diol units of the following formula (2):--OCH.sub.2 CH.sub.

Abstract: This invention relates to a heat insulator and a structure using the heat insulator and aims to provide a heat insulator which can be subject to a dry application using the heat insulator in the molded board or a wet application, having characteristics similar to those of a conventional inorganic heat insulator and a high strength which has not been provided before and to provide a structure using the above heat insulator. The heat insulator of this invention is prepared by mixing 3 to 50 parts by weight of synthetic resin emulsion in solid content equivalency, 1 to 20 parts by weight of organic microballoon, 0.3 to 5 parts by weight of carbon fiber and 10 to 200 parts by weight of inorganic microballoon with 100 parts by weight of cement. And the heat insulator of this invention is prepared by mixing 3 to 50 parts by weight of synthetic resin emulsion in solid content equivalency, 1 to 20 parts by weight of organic microballoon and 0.3 to 5 parts by weight of carbon fiber with 100 parts by weight of cement.

Abstract: An additive for reducing water loss from cement comprising a tetrapolymer, a base, an electrolyte, at least one surfactant, and water is disclosed. A process for producing cement slurries with improved water loss properties, as well as an improved method for cementing gas and oil well is also disclosed.

Abstract: Acrylic polymer composites which are moldable to form building veneers, panels, facades, decorative trims, planters and the like which include natural cellulose fibers, alpha-gypsum, melamine resin, hardening agents, inert fillers and water.

Abstract: Free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a PCM material. The silica-PCM mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Abstract: 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 wells. The set retarding additives are graft polymers comprised of a backbone sugar having one or more pendant polymerized or copolymerized vinyl compounds grafted thereto.

Abstract: 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.

Abstract: 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.

Abstract: Resurfacing surfaces of highways, roads, etc. to provide skid-resistant surface by preparing polymer concrete composition containing a curable polymer composition containing ethylenically unsaturated polymer having carbon-bonded carboxyl groups and/or hydroxyl groups and at least one reactive thickener comprising Group IIA metal oxide or hydroxide or a polyisocyanate; mixing the resulting mixture with aggregate; coating said surface with the resulting composition; compacting and shaping the resulting composition and curing the compacted, shaped composition on said surface.

Abstract: Disclosed is a concrete non-cure material for preventing the surface of cement mortar, which maintains contact with said material, from setting or hardening. This invention also discloses a concrete product or concrete structure with surface decorations produced by affixing the concrete non-cure material to the surface of the decorative material or to the inner surface of a form for a concrete molding and production methods therefor.

Abstract: The invention provides novel ionomer polymers and cements comprising .beta.-dicarbonyl groups. The invention has particular utility as filling materials for restoring teeth and for cementing inlays and crowns into place in the tooth, providing a base or a lining in a tooth cavity, and as adhesives or sealants. The invention provides ionomer cement systems that achieve increased resistance to water absorption and solubility.

Abstract: New surgical cements for use in medical applications such as orthopedic and maxillofacial surgeries and dental applications are disclosed. These surgical cements comprise a hardened cement formed from a mixture comprising a cementing component selected from the group consisting of ceramics having the formulaw(RO)--x(R.sub.2 O)--y(P.sub.2 O.sub.5)--z(X)wherein RO is selected from the group consisting of CaO and mixtures of CaO and MgO, R.sub.2 O is selected from the group consisting of alkali metal oxides and mixtures thereof, X is selected from the group consisting of SO.sub.4 and Cl, and w, x, y and z are the mole fractions of the respective constituents in the ceramic, when X is SO.sub.4, w is in the range of about 0.25 to about 0.5, x is in the range of about 0.05 to about 0.4, y is in the range of about 0.05 to about 0.25 and z is in the range of about 0.01 to about 0.25, and when X is Cl, w is in the range of about 0.25 to about 0.5, x is in the range of about 0.05 to about 0.