Abstract: A method of forming fiber reinforced aluminum phosphate bonded material having improved strength at elevated temperatures. The method comprises the steps of: (a) preparing a slurry by blending alumina and alumina phosphate solution, the slurry being substantially free of silica; (b) providing a fiber substrate; (c) infiltrating the solution into the fiber substrate; and (d) curing the infiltrated substrate to form a fiber reinforced aluminum phosphate bonded composite material. In a preferred embodiment of the present invention, the fiber substrate is made from SiC fibers.

Abstract: Pressureless sintering is used to densify silicon carbide based ceramics using a compound comprising transition metal oxides and aluminum oxide at temperatures in excess of 1850.degree. C. The resulting sintered body has a density greater than 95% of its theoretical density, flexural strength in excess of 560 MPa and fracture toughness of 7.2 MPa.m.sup.1/2. The method consists of sintering and conversion of transition metal oxides into carbides in one step operation. Practically any transition metal oxide can be used. The sintered ceramic bodies made by the present invention consist of silicon carbide matrix phase and Al.sub.2 O.sub.3 and transition metal carbide phases.

Abstract: The invention relates to fine non-oxide ceramic powders MeX, whereinMe=B, Al, Si, Ti, Zr, Hf, V, Y, Ta, Nb, Mo, W, La, Fe, Co, Ni and/or Cr andX=C, N, B and Si or combinations thereof, with the exception of Si.sub.3 N.sub.4 greater than 100 nm and AlN greater than 200 nm.

Abstract: A platelike polycrystalline fiber having a composite phase which consists of potassium hexatitanate crystals and titanium dioxide crystals mixed therewith is prepared by heating a mixture of titanium compound and potassium compound to obtain a melt, cooling the melt to obtain a lump of fibers, treating the lump of fibers in an aqueous acid solution to control the potassium content of the fibers to 1 to 13.5 weight %, and heat-treating the resulting fibers at 900.degree. to 1300.degree. C.The composite fiber is suitable as fibers to be included in friction materials for slide members of automobiles and like brake devices.

Abstract: The invention relates to fine-particle oxide ceramic powders of the metal oxides MeO, whereMe=Al, Si, Zr, Hf, Ta, Nb, Mo, W, V, La and/or Y,Al.sub.2 O.sub.3 being present in the .alpha.-phase and SiO.sub.2 being present in crystalline form.

Abstract: A hydrophobic filler material for alkaline paper is disclosed. The filler material comprises finely divided particles of an inorganic material, a majority of particles having a surface all of which is substantially modified with a water soluble C.sub.12 -C.sub.22 fatty acid salt and a metal ion in an amount at least effective to complex all of the fatty acid salt present. An alkaline paper is disclosed. The alkaline paper comprises a hydrophobic filler material comprising finely divided inorganic material, a majority of particles having substantially all of their surface being modified with a water soluble C.sub.12 -C.sub.22 fatty acid salt. A method for improving sizing of alkaline paper is disclosed, comprising preparing a filler material and adding the same to cellulose fiber. The filler material is prepared by selecting finely divided particles of an inorganic material and substantially modifying all of the surface of a majority of the particles with a C.sub.12 -C.sub.

Abstract: This invention relates to a method of manufacturing a malleable material for candles which includes the following steps: preparing 60% refined cera alba, 20% stearic acid, 10% thickening agent; mixing the refined cera alba with the stearic acid and melting the mixture at 100.degree. C.-120.degree. C. so as to mix them evenly; adding the vaseline into the mixture thereby forming a solid state material.

Abstract: The present invention relates to synthetic phyllosilicates having a lamellar structure of the type T--O--T devoid of OH.sup.- and F.sup.- ions. Said phyllosilicates are very resistant to oxidation and possess a high thermal stability. The invention further relates to a process for the preparation of said phyllosilicates.

Abstract: A process for producing micropellets of lightweight aggregate having a substantially spheroidal configuration which includes continuously mixing ceramic clay and liquid in a high speed rotating pin mixer to encapsulate substantially all other non-volatile inorganic solid materials present in micropellets having a diameter not exceeding about six mesh. The spheroidal micropellets are then fired at a temperature of at least 2,000.degree. F. to oxidize all volatile organic compounds present. The light-weight aggregate of micropellets can advantageously-be used to replace sand in a cement or concrete matrix, as a well as for numerous other uses.

Abstract: There are described luster pigments based on metal oxide-coated aluminum platelets wherein the substrate aluminum platelets have a total carbon content <0.1% by weight, and the preparation and use of these pigments.

Abstract: A composition for use in producing a foundry mold, a foundry mold of the composition and a method for making the foundry mold from the composition. The composition includes sodium smectite clay and at least one of a metal oxide, hydroxide or salt as a mineral clay component of the composition. This mineral clay component is present in the composition along with water and foundry sand. The metal of the oxide, hydroxide or salt may be aluminum, calcium, iron, potassium, magnesium, boron or zinc. The sodium smectite clay may be at least one of bentonite, hectorite or saponite.

Abstract: Disclosed is a process of using a bimodal distribution of scrubs in an externally cooled conduit during heat removal whereby a hot gaseous suspension containing pigmentary metal oxides is subjected to cooling. Effective heat transfer is provided. Pigmentary properties such as CBU and gloss are improved.

Abstract: A method of making metal oxide clusters in a single stage by reacting a metal oxide with a substoichiometric amount of an acid in the presence of an oxide particle growth terminator and solubilizer. A method of making a ceramer is also disclosed in which the metal oxide clusters are reacted with a functionalized polymer. The resultant metal oxide clusters and ceramers are also disclosed.

Abstract: A method for producing calcined kaolin pigments of high opacifying properties and low abrasion. A kaolin crude is selected having a G.E. brightness in the range of 70 to 80, a titania content of 2.0 to 3.0% by weight, less than 2% iron expressed as Fe.sub.2 O.sub.3, and a particle size distribution such that at least 88% by weight of the particles of said crude are of less than 2 .mu.m E.S.D.. The crude is blunged with water, and the resultant slurry degritted to form an aqueous slurry having at least 65% by weight solids. The slurry is centrifuged and a fraction recovered having over 65% solids, and in which at least 92% by weight of the particles are of less than 2 .mu.m. The recovered fraction is dried to less than 1% moisture, and pulverized to break up agglomerates. The pulverized fraction is then calcined by heating same to 1450.degree. to 1600.degree. F. after which the calcined kaolin is milled to yield a product having a G.E. brightness of 79 to 81 and an Einleiner abrasion of not mere than 2.

Abstract: The invention relates to transparent iron oxide pigments having an average particle size, based on the longest needle axis, of less than 0.1 .mu.m, to processes for their production and to their use for pigmenting lacquers and plastics.

Abstract: A moisture absorbing and frictional grid enhancing composition is provided which combines powdered magnesium silicate particulates and sawdust particulates in a weight percentage ratio approximating 50%-90% by weight of sawdust particulates to the overall composition weight. The powdered magnesium silicate particulates are mixed with the sawdust particulates in a dry state to form the overall moisture absorbing and frictional grip enhancing composition which has a spongy feel to the user and optimizes both moisture absorption and frictional gripping of an implement.

Abstract: Organoclays made from smectite-type clays are described as rheological additives for clear systems including clear coat paints, lacquers, varnishes and personal care products. Such additives impart desirable properties to such systems and do not adversely impact the desired properties of clarity and transparency required in such systems.

Abstract: The present invention relates to platelet-like pigments of dark surface color and to their preparation process and use.

Abstract: A novel class of chemical compounds has been discovered that has the ability to prevent slippage between surfaces in intimate contact. One immediate application of the compounds is their utility when applied to the rubber V-belts used on the fan belts of automobiles. The compounds are non-toxic, easy to apply and readily available.

Abstract: The invention relates to iron oxide pigments based on silica, zirconium dioxide and/or titanium dioxide particles coated with iron oxide, the iron oxide content being more than 350% by weight, relative to the weight of the silica, zirconium dioxide and/or titanium dioxide particles.