Abstract: The invention relates to a lightweight substance molded body made of a lightweight aggregate and a sintering auxiliary agent, wherein said molded body consist of a sintering product containing 60-95 wt. % lightweight aggregate with 40-5 wt. % water-soluble alkali silicate.

Abstract: Molds are fabricated having a substrate of high density, high strength ultrafine grained isotropic graphite, and having a mold cavity coated with titanium carbide. The molds may be made by making the substrate (main body) of high density, high strength ultrafine grained isotropic graphite, by, for example, isostatic or vibrational molding, machining the substrate to form the mold cavity, and coating the mold cavity with titanium carbide via either chemical deposition or plasma assisted chemical vapor deposition, magnetron sputtering or sputtering. The molds may be used to make various metallic alloys such as nickel, cobalt and iron based superalloys, stainless steel alloys, titanium alloys and titanium aluminide alloys into engineering components by melting the alloys in a vacuum or under a low partial pressure of inert gas and subsequently casting the melt in the graphite molds under vacuum or low partial pressure of inert gas.

Abstract: Methods for making various metallic alloys such as nickel, cobalt and/or iron based superalloys, stainless steel alloys, titanium alloys and titanium aluminide alloys into engineering components by melting of the alloys in a vacuum or under a low partial pressure of inert gas and subsequent casting of the melt in the graphite molds under vacuum or low partial pressure of inert gas are provided, the molds having been fabricated by machining high density, high strength ultrafine grained isotropic graphite, wherein the graphite has been made by isostatic pressing or vibrational molding.

Abstract: Non-stick mold, tool or apparatus is used to convert a liquid or semi-solid material to an end product after the application of a predetermined temperature for a predetermined time. The non-stick mold, tool or apparatus includes a planar portion having at least one cavity. The cavity defined by a side wall that extends downwardly from the planar portion to a closed end. The non-stick mold, tool or apparatus is made from a blend of a fluoropolymer component and a food grade silicon rubber component.

Abstract: Compositions containing core-shell particles having a core polytetrafluoroethylene-based polymers (PTFE) and shell styrene-based polymers (PS), wherein the particles contain an amount by weight of PTFE from 3 to 50%, preferably from 5 to 30% by weight, wherein the core PTFE particles have an average diameter from 5 to 100 nm, preferably from 10 to 70 nm, the core-shell particles having an average diameter from 10 to 170 nm, preferably from 20 to 100 nm.

Abstract: The invention relates to a mixture of elongated N-alkylaziridine prepolymers of general formula (I) wherein n represents a whole number between 1 and 50; R1 represents H or C1 to C12 alkyl; X represents a bivalent, saturated or unsaturated, linear, branched, cyclic or polycyclic hydrocarbon radical which can contain between 0 and 5 heteroatoms from the group 0, NR1, S, which contains a total of between 1 and 50, preferably between 2 and 30, and ideally between 2 and 20 C atoms, and which comprises a group selected from —NR1-(C═O)—O—, —NR1-(C═O)—NR1-, —(C═O)—O—, —(C═O)—S—, which represents that covalent link with the polymer radical Z; Z represents a bivalent prepolymer radical having number-average molar masses of between 1,500 and 45,000 g/mole, from the group comprising polyester, polycarbonate, polyolefins, polysiloxane and polyethers; E represents —X′-A-X′—; A represents a double radical, saturate

Abstract: Silicone material crosslinkable into silicone elastomer by polyaddition reactions is described. A material is provided offering a compromise between the following characteristics: fluidity (in non-crosslinked state), hydrophilicity (in non-crosslinked or crossliked state) and high mechanical properties (in crosslinked state). The following materials are added to crosslinkable silicone material: (i) a reinforcing siliceous filler in the form of a suspension obtained by subjecting the filler to a treatment in two stages by an agent providing compatibility and by operating in the presence of a polyorganosiloxane with Si-alkenyl functions; and (ii) one or more non-ionic, ionic or amphoteric surfactants. Said silicone material is particularly useful for impressions, for example dental impressions and for making pads used in pad printing techniques.

Abstract: An improved phosphate-type refractory investment material and method for marking solid investment molds especially useful for casting high melting point metals and alloys, such as platinum and the like. The material consists essentially of one or more phosphate salts, one or more water soluble organic acids, and refractory powder. The material can be prepared as a dry powder blend which is easily shipped to the user and mixed with water at the time of investing the flask. Alternatively, the salt and/or organic acid can be combined with the refractory powder at the time of mixing with water.

Abstract: A sand casting foundry composition reduces thermal defects that cause veining in metal parts cast from sand casting foundry shapes formed from the foundry composition. A plurality of foundry sand grains are mixed substantially uniformly with a plurality of shale particles, and a curable binder coats the sand grains and the shale particles to establish core and mold foundry shapes used to cast the metal part. Anti-veining capability occurs because the shale particles include mineral components which have an inherent characteristic of crystal structural collapse upon exposure to metallurgical temperatures, and the crystal structural collapse yields space which is consumed by thermal expansion of the sand grains in the foundry composition. This compensatory effect avoids the creation of mechanical forces and stresses within the foundry shape that cause cracks and fissures in the foundry shape that lead to veining.

Abstract: The invention relates to plasticizer-containing polyvinylbutyrals that are characterized by containing as the plasticizer at least one dibenzoate of alkylene and polyalkylene glycols. The invention further relates to a method for producing said compounds, and to their use in molding compounds of all types, especially for producing films that can for example be used as an intermediate layer in laminated safety glasses.

Abstract: A mold releasing agent suitable for easily casting a cylindrical cast member which is superior in adhesion on cast parts at low cost, is provided. A mold releasing agent for a centrifugal casting mold comprises a binder, a heat insulating agent, and a foaming component having a foaming property, is dissolved in a solvent so as to form a slurry having a specific viscosity, and a mold releasing agent layer having crater shaped concave portions is formed by coating on the inside of an integral centrifugal casting mold.

Abstract: A sand casting facing composition comprises a dry mixture of about 77% fine sand, 5% binder, 6% green system sand and 12% burned system sand. The fine sand is mulled with 5.8% wt/wt oil per total dry mixture and catalyst at about 0.5% wt/wt. Preferably, fine sand and binder are mulled with oil, catalyst, green system sand and screened burned system. The mulled mixture is rested, mulled again and rested again before use as facing sand for achieving accurate reproduction of the pattern's fine detail. A method of preparing the mold and preserving fine detail comprises riddling the pattern with a thin layer of the facing sand composition, compacting, riddling with dry system sand and riddling with system sand before compacting about the periphery of the pattern. Final layers of system sand are applied and compacted over the entire pattern.

Abstract: The present invention relates to compositions containing defined sol-gel materials as anti-stick coatings and to apparatus for preparing and processing polymers, such as rubbers, characterized in that they possess such an anti-stick coating containing a hydrophobic sol-gel material.

Abstract: The present invention describes a die to manufacture pieces of plastic materials, molded by injection, projection or blowing processes that does not need end finishing during its construction, and that does not need to employ additional demolding agents during its whole useful life to release the objects molded. Said die is specially useful to obtain pieces of plastic materials that must be painted or must be dealt superficially with the purpose of being employed in various industries, such as the automobile industry, electro-domestic accessories manufacturing, communications, computers, or decoration, etc. This die is also specially useful to obtain pieces that must be adhered in an efficient and substantially permanent way to others as are the soles for the industrial manufacturing of shoes and of sports shoes.

Abstract: A writing implement has a bar type lead element, a container formed as a hollow member having one and opposite ends being open, a supporting shaft inserted in the container to be moved therein linearly in an axial direction, the supporting shaft being formed as a hollow member having a center hole pierced therethrough, and an adjustment member movably connected to a rear end of the container to be rotated, the rotation of the adjustment member causes the supporting shaft to be linearly moved in the container, the adjustment member being formed as a hollow member having one and opposite ends being open to be in fluid communication with the center hole 42. Accordingly, the raw material of the lead element is injected into the container from a rear end of the adjustment member through the center hole, and solidifies into the lead element, and the lead element is supported on the front end of the supporting shaft at its rear end, and moved in accordance with the movement of the supporting shaft.

Abstract: A mold release composition and a method of forming molded articles using the mold release composition. The mold release composition of the present invention comprises at least one low vapor pressure hydrocarbon fluid and may further include an acid bearing release modifying material. An effective amount of the mold release composition is applied to mold surfaces to facilitate the release of a molded article formed by curing a molding media on the mold surface. By virtue of the low vapor pressure of the hydrocarbon fluid, the mold release composition is nonhazardous, nonflammable and environmentally friendly, including moderate to high biodegradability.

Abstract: An impression material for the use with an impression spoon in patients, wherein the impression material comprises curable components and at least one first filler, characterized in that said at least first filler has a BET surface of from 20 to 50 m2/g, preferably from 30 to 40 m2/g, whereby the impression material attains a low thixotropy and a viscosity of from 1 to 350 Pas.

Abstract: A high energy radiation-curable composition comprising a partial hydrolysis-condensation product of (A) a mixture of an alkoxy containing organopolysiloxane and alkoxysilanes and (B) a multifunctional acrylate, and a resin molding coated with the composition. The composition forms coatings of superior curability, water repellency, water resistance, oil repellency, transparency, flexibility, and scratch resistance, especially on resin moldings.

Abstract: This invention provides improved methods and compositions for achieving material coloration using particle scattering. These coloration effects can be designed to be either highly stable or dependent upon the switching effects of either temperature, integrated thermal exposure, moisture absorption, or exposure to actinic radiation. Articles employing materials with these coloration effects are described. Composition comprise a solid, light-transmitting matrix component having a non-liquid particle scattering colorant dispersed. Articles are produced wherein another solid second matrix component has an electronic transition colorant dispersed therein and the first and second compositions are disposed on one another and optionally interpenetrate each other. Colored articles are produced in the form of fibers, films and molded articles.

Abstract: A method for producing a sand core includes the following steps: (a) providing a casting mold having a mold cavity, the casting mold including at least one first conduit and at least one second conduit; (b) providing a sand core disposed in the mold cavity; (c) providing a supply of conditioning gas to the casting mold, the conditioning gas being supplied to the casting mold through at least one of the first and second conduits; (d) providing a controller connected to the first conduit and the second conduit to selectively control the supply of conditioning gas; (e) providing a gas exhaust unit operatively connected to the casting mold; (f) operating the gas exhaust unit to cause the conditioning gas to be moved through the sand core; and (g) removing the sand core from the casting mold.

Abstract: A cosmetic stick container includes a housing sleeve, an inner sleeve provided inside the housing sleeve so as to be advanceble and retractable along a length of said housing sleeve, a cosmetic stick molded directly inside the housing sleeve having a capsule attached thereto so as to be secured to the inner sleeve, and a mold lubricant constituted of a composition having low compatibility with a composition of the cosmetic stick. The mold lubricant is applied on inner surfaces of the housing sleeve and the capsule.

Abstract: A wallboard sheet includes a core having opposing first and second major surfaces, at least one face layer on at least one of the first and second major surfaces of the core, and wherein the core includes aerated concrete. The provision of aerated concrete for the core provides many key advantages over conventional wallboard sheets, such as gypsum wallboard, for example. The at least one face layer may include first and second face layers on respective first and second major surfaces of the core. The one or more face layers may include paper. The core may have a generally rectangular shape defining a pair of opposing side edges and a pair of opposing end edges. The first major surface may have beveled portions adjacent respective opposing side edges in some embodiments. The at least one face layer may extend around the opposing side edges. In addition, the opposing end edges of the core may be exposed.

Abstract: A bonded particulate material and a method for forming an bonded particulate material are defined. The material includes a particulate metal oxide that is capable of forming a metalate in the presence of an alkali. The metal oxide particles are typically dissolved in a solution of the alkali and then dried, such that an undissolved metal oxide core remains, surrounded by a metalate which is in turn bonded to metalate of adjacent particle and/or to a fill material.

Abstract: A dental impression composition comprises a polyether derivative functionalized via the hydroxyl groups of a polyether polyol with groups such as aziridine, epoxide and unsaturated substituents including (meth)acrylic, allyl, vinyl, vinyl ether or maleate groups, wherein the level of cyclic oligomeric polyethers is less than 5.0 weight percent.

Abstract: A foundry exothermic assembly is formed by mixing hollow glass microspheres and an inorganic or organic binder with matrix forming constituents including an oxidizable metal, an oxidizing agent, a foundry refractory aggregate and, optionally, a pro-oxidant, and shaping and curing the mixture. The hollow glass microspheres are dispersed and embedded in the assembly matrix.

Abstract: A method of removing a core from a CMC component in which the core was used to form an internal cavity. According to one embodiment of the invention, the core is removed from a fully densified CMC component by heating the component and core to a temperature at which the core deteriorates but below a temperature at which the component would melt or otherwise be damaged. According to a second embodiment of this invention, the component is only partially densified, and then impregnated with a coating material that is resistant to a leaching compound capable of removing the core. The core can then be removed using the leaching compound without damage to the internal surfaces of the component defined by the core when the component was fabricated.

Abstract: No-bake inorganic binder compositions for binding particulate material and methods for curing such inorganic binders. The inorganic binder compositions are composed of silicate and phosphate components. The no-bake compositions further contain curing catalyst such as a catalyst selected from the group consisting of aliphatic carbonates, cyclic alkylene carbonates, aliphatic carboxylic acid esters, cyclic carboxylic acid esters, phosphate esters and mixtures thereof. The composition produces a binder having the advantageous strength properties of a silicate binder system with the water breakdown properties of a phosphate binder system. Thus, relative to an all-silicate binder system, the present invention has improved mechanical shakeout and improved water collapsibility. Also, relative to conventional all-phosphate binder system, the present invention has superior hot strength, i.e., the foundry cores and molds do not soften at elevated temperatures.

Abstract: A method for preparing a mould lubricant for use in direct chill casting of reactive metals, including magnesium, magnesium alloys, aluminum, and aluminum alloys, proceeds through combining a casting lubricant and a gaseous oxidation-inhibiting agent in a vessel external from the mold under vacuum conditions. The casting lubricant is selected from a variety of casting oils and casting greases. The gaseous oxidation-inhibiting agent is selected from a variety of inert gases, including sulfur hexafluoride (SF6).

Abstract: The ferrules and feeding head and supply elements, insulating or exothermic, are obtained by blowing or manual molding from a formulation which comprises aluminium silicate hollow micro beads, with an alumina content below 38% in weight, an agglomerant and optional loads, in non fibrous form. Depending on the density of the micro beads, appropriate formulations may be obtained for the manufacture of ferrules and insulating and exothermic feeding head and supply elements. the ferrules obtained, have an external and internal dimensional exactness and may be coupled to the mold after production, without additional handklings and in a manual or automatic manner. Said ferrules are of interest in the production of metallic ferrous or non ferrous parts.