Abstract: A lightweight, thermoplastic elastomer composition is prepared by mixing a thermoplastic elastomer, such as a styrene/butadiene block copolymer, an extender oil and, optionally, at least part of a dense, particulate filler such as silica, at an elevated temperature to form a viscous, liquid masterbatch and, thereafter, mixing hollow microspheres, such as hollow glass micropheres, and all or the remainder of a dense, particulate filler, if any, with the masterbatch at an elevated temperature to form the lightweight, thermoplastic elastomer composition. The thermoplastic elastomer composition is preferably formed into a flexible, lightweight sheet-type structure particularly suitable for use as a sound or heat insulating material for automotive, aircraft and construction uses.

Abstract: A soft, low-resilience, cured rubber composition is prepared by mixing(a) 100 parts by weight of a polymeric material comprising a styrene-butadiene copolymer or styrene-butadiene copolymer mixture having a styrene content of 53 to 75% by weight, and 0 to 40% by weight of the polymeric material of another rubber ingredient,(b) 30 to 300 parts by weight of a filler, and(c) 5 to 100 parts by weight of a plasticizer, adding effective amounts of a vulcanizing agent and a vulcanizing accelerator to the mixture, and then heat curing the mixture. A similar composition further containing a foaming agent may be heat cured into a low-resilience rubber foam. Rubber and foamed rubber compositions have improved vibration-attenuating and shock-absorbing properties.

Abstract: One-part moisture-curable polyurethane adhesive, coating, sealant, or casting compositions containing a blend of isocyanate-functional prepolymer, terpene-phenolic resin, and silane compound. The compositions adhere to a variety of unprimed substrates, and resist moisture and UV exposure.

Abstract: A soft vinyl chloride resin composition having a light weight and a superior abrasion resistance and lusterless surface is provided, which composition is obtained by blending 100 parts by weight of a vinyl chloride copolymer consisting of 99.0 to 99.95% by weight of vinyl chloride and 1.0 to 0.05% by weight of a polyethylene glycol diacrylate or a polyethylene glycol dimethacrylate both having 4 to 50 polymerization units of ethylene glycol, mainly with (a) 5 to 100 parts by weight of a filler having a specific gravity of 0.7 or less and a compressive strength of 70 Kg/cm.sup.2 or higher and (b) 30 to 150 parts by weight of a plasticizer.

Abstract: Cured epoxy resin compositions, having a glass transition temperature (Tg) over 300.degree. F. (149.degree. C.) coupled with coefficients of linear thermal expansion (CTE) closely approaching those of aluminum, find practical utility in tooling applications as a modeling stock. The epoxy resin composition comprises one or more epoxy resins, one or more aromatic amine hardeners or a blend of aromatic and aliphatic amine hardeners, and a combination of at least three fillers selected from the group consisting of glass fibers, glass microspheres, graphite fibers and mica.

Abstract: A material with high mechanical strength and a density close to 1 is obtained by:(a) dispersing on weight basis 10-15% of a melamine-formol resin, 10-50% of hollow microspheres, and optionally up to 60% of light aggregates, in water;(b) mixing the resultant dispersion in the presence of a cross-linking catalyst, e.g., ammonium chloride, for the melamine-formol resin, until a fluid paste is obtained; and(c) allowing said fluid paste to harden into the desired material.

Abstract: Unit soles having a smooth, dull appearance are molded from a polymeric composition comprising a radial (AB)--.sub.x BA monoalkenyl arene/conjugated diene block copolymers, syndiotactic-1,2-polybutadiene a polystyrene resin, a hydrocarbon extending oil, a blowing agent and a filler.

Abstract: Polymers that are stable under aqueous conditions of high ionic strength are combined with non-fused, silicate based microspheres that are modified with multivalent metals but not washed or dried, said microspheres being present as filters.

Abstract: A material suitable for thermosetting includes a collection of hollow particles adhesively mixed with a thermosetting resin in such proportions that the mixture exists in a granular form and may be converted by thermosetting into a fused solid mass having a density not greater than 0.5 grams per cubic centimeter.The particles may be glass microbubbles or phenolic microballoons and the resin may be a hardenable Friedel-Crafts resin. The material according to the invention is more suitable for packing into shaped cavities than known resins including those containing filler particles.

Abstract: Compositions of an aromatic polycarbonate, a polysulfone carbonate and a filler are disclosed which have good electrical properties, high modulus and molten solder resistance.

Abstract: A container sealing composition made from a plastisol having a mass of hollow discrete microspheres incorporated therein. The composition is characterized by having increased shelf life, as manifested in reduced separation of the hollow discrete microspheres from the plastisol, and improved viscosity stability. The container sealing composition also exhibits uniform void volume which is essential for good sealability and seal quality.

Abstract: Energy absorbing polyurethane elastomer compositions having a density of from about 0.4 to about 1 gm/cc, a compression set of less than about 5% and a recovery time of from about 10 to about 100 milliseconds containing a light-weight filler are formed by reaction of a urethane-forming component comprising a compound containing at least four urethane-forming reactive sites and capable of forming stable complexes through unsatisfied urethane-forming reactive sites, an elasticizing polyol selected from the group consisting of diols and triols, and a diisocyanate in less than stoichiometric amounts.

Abstract: A one part composition useful as a putty for filling recessed areas in flexible parts of damaged auto bodies and the like is provided. The curable composition has a viscosity in the range of 50,000 to 450,000 cps and comprises by volume 6 to 25 parts binder comprising substantially non-reactive solvent-soluble polyurethane, 43 to 68 parts solvent for the binder and 20 to 42 parts talc filler. Other fillers may also be included. The preferred polyurethane binder is a linear polyurethane elastomer which is substantially free of cross-links and has an elongation at break value in the range of 300-850% and a tensile strength in the range of 1,500 to 7,000 psi.

Abstract: A method and a composition are provided for molding low density desiccant syntactic foam articles. A low density molded desiccant article may be made as a syntactic foam by blending a thermosetting resin, microspheres and molecular sieve desiccant powder, molding and curing. Such articles have densities of 0.2-0.9 g/cc, moisture capacities of 1-12% by weight, and can serve as light weight structural supports.

Abstract: The invention relates to a process for insulating surfaces for the purpose of preventing or reducing occurrence of condensation on the surface, comprising applying to the surface a layer of a coating composition containing a binder and, distributed therein, granules of an expanded inorganic material having a bulk density of at least 150 kgs/m.sup.3. The invention also provides for a composition suitable for carrying out such process, comprising a binder and granules of an expanded inorganic material of the nature indicated.

Abstract: Methods of converting essentially unpolymerized precursors into polyimides in which the precursors are exposed to microwave radiation. Preheating, thermal post-curing, and other techniques may be employed to promote the development of optimum properties; and reinforcements can be employed to impart strength and rigidity to the final product. Also disclosed are processes for making various composite artifacts in which non-polymeric precursors are converted to polyimides by using the techniques described above.

Abstract: Cured polyorganosiloxane foams exhibiting a uniquely high resistance to burn-through and disintegration when exposed to flames contain at least 0.1% by weight each, based on the weight of said foam, of at least one finely divided nonmetallic fibrous heat resistant material, at least one finely divided nonmetallic cellular heat resistant material, and at least 5 ppm of platinum in elemental or chemically combined form. The total concentration of heat resistant materials should not exceed 40%, based on the weight of the foam. This invention also provides a method for preparing flame retardant polyorganosiloxane foams.

Abstract: A mixture of vinyl plastisol, suspension grade resin and expanded perlite is prepared in a manner such that the particles of perlite are not significantly damaged. The mixture is placed on a substrate and fused, thereby producing a foam-like material which is usable as a decorative covering. Alternatively, the mixture can be cast on a release surface and allowed to stand until the majority of the perlite particles have migrated to the top surface, thus leaving a layer of material containing substantially no perlite along the lower surface which interfaces with the release surface. Upon fusing this stratified mixture and separating the release surface, the fused material is inverted. The layer of material which contains substantially no perlite becomes the protective surface and the remaining portion of the fused material, which is foam-like in nature, becomes the resilient support. Such syntactic foams may be used as replacements or substitutes for mechanically frothed or chemically blown foams.

Abstract: A thermosetting composition exhibiting improved physical properties and little or no blistering is provided consisting essentially of a CO.sub.2 or O.sub.2 terminated high vinyl alkadiene polymer, an inorganic filler, an organic peroxide compound, and a polyolefin modifier.

Abstract: Disclosure is made of a method of curing the polyepoxide resin binder component of polyepoxide based syntactic foams. Ketones are employed to reversably block primary amine groups on polyamine curing agents during the initial curing. As the cure progresses, the block is removed to complete the cure. The result is a moderation of peak exotherms generally associated with the cure, inhibiting degradation of the product foam.

Abstract: A permanently elastic dielectric composition comprising a resilient dielectric base material, an electrically polarizable component having low electrical conductivity to increase the relative dielectric constant of the composition, and a component displaying metal conductivity for maintenance of the relative dielectric constant at high power frequencies.

Abstract: Disclosure is made of a method of curing the polyepoxide resin binder component of polyepoxide based syntactic foams of high density. Ketones are employed to reversably block primary amine groups on polyamine curing agents during the initial curing. As the cure progresses, the block is removed to complete the cure. The result is a moderation of peak exotherms generally associated with the cure, inhibiting degradation of the product foam.

Abstract: A material suitable for thermosetting includes a collection of hollow particles adhesively mixed with a thermosetting resin in such proportions that the mixture exists in a granular form and may be converted by thermosetting into a fused solid mass having a density not greater than 0.5 grams per cubic centimeter.The particles may be glass microbubbles or phenolic microballoons and the resin may be a hardenable Friedel-Crafts resin. The material according to the invention is more suitable for packing into shaped cavities than known resins including those containing filler particles.

Abstract: A fluoroelastomer hollow glass microsphere coating has been found to provide new and unexpected corrosion resistance to metal surfaces for protection against severely corrosive environments. The coating comprises a fluorocarbon elastomer and 3-50% by volume of hollow glass microspheres or microballoons having a size in the range of about 2-300 microns, preferrably 20-200 microns. The hollow glass microspheres or microballoons substantially increases the corrosion resistance of a fluoroelastomeric liquid composition, yielding new and unexpected thermal and chemical resistance, particularly when the coating composition is applied in two or more layers.

Abstract: Hollow glass bubble-containing aqueous dispersions of tetrafluoroethylene polymer having good shelf life are provided, said dispersions also containing nonionic surfactant and water soluble electrolyte.

Abstract: The tetramethylol derivative of 4,4'iso-propylidenediphenol is dissolved in a solution of water and ethylene or propylene carbonate to yield concentrated solutions of the derivative in a form which may readily be used in the manufacture of foams or used as a liquid binder for molded ceiling products. Based on 100 parts by weight of the tertramethylol derivative, these solutions contain from about 15 to about 35 parts by weight of water and from about 5 to about 30 parts by weight of ethylene carbonate or propylene carbonate, with the total parts by weight of the water and carbonate varying from about 40 to about 45.

Abstract: A lightweight extrudible or trowellable caulk or sealant composition can be compounded from polymeric acrylic binders containing dispersed therein sufficient microballoons with minor amounts of the ingredients to provide a pliable caulk material exhibiting good heat insulation properties, low shrinkage, and flexability in use.

Abstract: Flexible intumescent sheet materials containing low density filler components to provide low density mounting mats which reduce the mount density to prevent ceramic diesel particulate monolith cracking are disclosed.

Abstract: Disclosed are telephone cable filling materials and telephone cables comprised of a plurality of insulated electrical conductors twisted together to form a core in which there are a multiplicity of interstices between the insulated electrical conductors filled with the cable filler materials. The filling materials are composed of a petrolatum base material and inorganic microspheres and can be divided into two groups: (1) a first group to fill cables used at temperatures below the melting point of the petrolatum and (2) a second group to fill cables that may be used above that temperature. The first group is composed of mixtures of 40 to 90 weight percent petrolatum and 1 to 60 weight percent inorganic hollow (air filled) microspheres. When mixtures from this group are used as a filler in a telephone cable, the filler has a drip point nearly equal to the average melting point of the petrolatum, normally 57.2.degree. C. The second group is composed of two embodiments.

Abstract: The specification discloses a shell for luggage and the like comprising wood fibers, glass fibers, paper scrap, glass beads, and plastic resin. The mixture is blended with water to form a slurry, is vacuum formed and is then molded under heat and pressure.

Abstract: A fluoroelastomer-hollow glass microsphere coating has been found to provide new and unexpected corrosion resistance to metal surfaces for protection against severely corrosive environments. The coating comprises a fluorocarbon elastomer and 3-50% by volume of hollow glass microspheres or microballoons having a size in the range of about 2-300 microns, preferably 20-200 microns. The hollow glass microspheres or microballoons substantially increases the corrosion resistance of a fluoroelastomeric liquid composition, yielding new and unexpected thermal and chemical resistance, particularly when the coating composition is applied in two or more layers.

Abstract: In a thermosetting composition containing high vinyl alkadiene polymer, organic peroxide, calcium carbonate filler and optional ingredients comprising a vinyl arene liquid monomer, coupling agent, polymerizable plasticizer, and fiberglass reinforcing filler, the addition of an adduct of polybutadiene and a carboxylic acid anhydride improves properties of the molded compositions comprising flexural modulus, tensile strength and Barcol hardness.

Abstract: Glass beads having a particle size of 1 to 200 microns are included as part or all of the filler in a sealing composition suitable for sealing container ends and which is made by dispersing a filler in a latex of a styrene butadiene or other rubbery polymer, optionally also containing a tackifying resin.

Abstract: High density structural ("blocking") materials composed of a polyimide filled with glass microballoons. Structural components such as panels which have integral edgings and/or other parts made of the high density materials.

Abstract: High density structural ("blocking") materials composed of a polyimide filled with glass microballoons and methods for making such materials. Structural components such as panels which have integral edgings and/or other parts made of the high density materials.

Abstract: Hardenable one-component substances composed of hardenable components and an activator wherein one of the components is contained in a reaction hindering protective casing to inhibit hardening until use are disclosed wherein, as an additional component, hollow microspheres are included. The microspheres provide increased stability to storage of the composition as well as enhance the rupture of the protective casing during activation and application of the substance and also provide a low specific gravity to the component. Methods for preparing and using the substances are also disclosed.

Abstract: Methods of converting essentially unpolymerized precursors into polyimides in which the precursors are exposed to microwave radiation. Preheating, thermal post-curing, and other techniques may be employed to promote the development of optimum properties; and reinforcements can be employed to impart strength and rigidity to the final product. Also disclosed are processes for making various composite artifacts in which non-polymeric precursors are converted to polyimides by using the techniques described above.

Abstract: Glass beads having a particle size of 1 to 200 microns are included as part or all of the filler in a sealing composition suitable for sealing container ends and which may be made by dispersing or dissolving solid styrene butadiene or other rubbery polymer and filler, and optionally also containing a tackifying resin, in a liquid medium.

Abstract: High density structural ("blocking") materials composed of a polyimide filled with glass microballoons. Structural components such as panels which have integral edgings and/or other parts made of the high density materials.

Abstract: Disclosed are materials used to fill electrical and light waveguides transmitting communications cables to make them waterproof. The filling materials have superior waterproofing, dielectric and handling characteristics and are made from compounds of styrene-ethylene-butylene-styrene, styrene-butadiene-styrene or styrene-isoprene-styrene type block copolymers dissolved in paraffinic or naphthenic type mineral oils with a minimal content of aromatic hydrocarbons, inorganic hollow microspheres and, if desired, an additive such as low molecular weight polyethylene or glycerol hydroxy stearate.

Abstract: The present invention is directed to a trowelable, lightweight, synthetic stucco composition containing a crushable, lightweight aggregate, and specifically to the protection of the lightweight aggregate from substantial particle size reduction during troweling application by providing in the composition a protective amount of a hard, non-crushable aggregate having a protective particle size. The hard aggregate is strong enough to resist the troweling step without crushing, and serves to keep the trowel a spaced distance away from the substrate upon which the stucco composition is applied, to thereby substantially prevent crushable, lightweight aggregates of similar or smaller particle size from crushing, and to limit the crushing of crushable, lightweight aggregates having a larger particle size.

Abstract: Two component adhesive formulations are described that can be mixed to form compositions containing a curable liquid resin binder and filler. The liquid resin binder comprises from about 1% to about 60% of a lower alkoxy, lower alkyl methacrylate comprising methoxyethyl methacrylate, and from about 40% to about 99% of a polyunsaturated agent selected from the group consisting of aliphatic or aromatic diacrylates or dimethacrylates or mixtures thereof, the percentages being by weight based on the liquid resin binder. The filler forms up to 80% by weight of the adhesive composition and consists of finely divided inorganic filler, finely divided organic filler that may be soluble in the liquid resin binder, and mixtures thereof. The preferred compositions are useful as orthodontic adhesives and contain from about 10% to about 50% by weight of the liquid resin binder of methoxyethyl methacrylate.

Abstract: The invention relates to the production of foam composites which are thermally insulating and light and therefore suitable for use as e.g. ceiling tiles, wall tiles and brick insulation.The aim of the invention is to produce a light, strong composite as cheaply as possible. The method comprises reacting, in the presence of water and poly(vinyl alcohol), hollow silica spheres with a water-soluble organic polyacid and then allowing or causing the resulting composite to set.

Abstract: A multiple shell structure and a method of manufacturing such structure wherein a hollow glass microsphere is surface treated in an organosilane solution so as to render the shell outer surface hydrophobic. The surface treated glass shell is then suspended in the oil phase of an oil-aqueous phase dispersion. The oil phase includes an organic film-forming monomer, a polymerization initiator and a blowing agent. A polymeric film forms at each phase boundary of the dispersion and is then expanded in a blowing operation so as to form an outer homogeneously integral monocellular substantially spherical thermoplastic shell encapsulating an inner glass shell of lesser diameter.