Abstract: A foamable flame-retardant thermoplastic injection moldable composition comprising in admixture (a) a polyester resin, (b) a filler selected from the group consisting of fibrous glass or a mineral or mixtures thereof in an amount of from about 5 to about 50 weight percent, (c) a flame-retardant additive and (d) a minor amount of a foaming agent.

Abstract: A blowing agent concentrate comprising a chemical blowing agent and a thermoplastic composition vehicle therefore, said thermoplastic composition being a saturated polyester and/or copolyester having a crystalline melting point between 100.degree. C. and 220.degree. C. and a reduced viscosity of 0.4 dl/g to 1.6 dl/g; the use of such blowing agent concentrate in the formation of foamed articles of high molecular weight polyalkyleneterephthalate which articles can be filled and/or reinforced and/or flame proofed and can contain other additives. Particularly contemplated is the use of such blowing agent concentrate in the formation of glass fiber reinforced structural foam moldings of polyalkyleneterephthalates especially polytetramethylene terephthalates.

Abstract: A sealant for the remedial sealing of self-sealing coke oven doors, or ordinary coke oven doors sealed with a conventional lute, or for sealing spigot joints in off-gas pipe lines in coke oven installations comprises a mixture of from 25 to 45% of a latex, (preferably a PVA-based latex) from 10 to 25% water, from 25 to 45% of a particulate filler (preferably a talc) and from 5 to 15% of an inorganic fiber (preferably an asbestos fiber). At least 40% of the fiber should pass through a British standard 100-mesh sieve.The sealant may vary from a flowable to a putty or paste-like consistency and may be applied by spraying or trowelling as appropriate. If the inorganic fiber is not an asbestos the sealant may also include a proportion of a water soluble thickener to enhance the compatibility of the mixture.

Abstract: The invention relates to a foaming on foamable olefin polymer composition containing a nucleating agent and a cell size increasing agent comprising certain amino acids and/or polyhydric alcohols.

Abstract: The disclosure relates to flexible heat expanding, fire retardant composite materials comprising an intumescent component in granular form, an organic binder component such as an elastomer, an organic char-forming component and fillers such as clay, silica, synthetic organic staple fibers or inorganic fiberglass or ceramic fibers. These composites, when subjected to heat at about 110.degree. C., can intumesce up to ten times their original volume.

Abstract: Copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid amide monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.

Abstract: Prefabricated self-supporting panels having at least two outer layers and one inner layer provided with a foamed mixture, wherein the inner layer comprises unsaturated polyester resins, hollow microspheres of aluminum phyllosilicate having an average diameter of 150 microns and density of 0.7 kg/cu.dm., and a coupling agent of the organofunctional silane type.The process for the manufacture of these panels has also been described.

Abstract: Rubber-modified copolymers of monovinyl aromatic monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.

Abstract: Copolymers of monovinyl aromatic monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said composition having fire retardant properties.

Abstract: A shapeable, fireproof, elastic packing material suitable for packing joints and the like in the form of a paste or shaped structure which is elastic at low temperature and is capable of swelling at high temperature, e.g. in a fire, to form a solid gas impenetrable barrier. The elastic packing material contains an elastomer, a vulcanizing agent and an intumescent mineral.

Abstract: A method for preparing a siloxane foam by mixing an organohydrogensiloxane, a hydroxylated organosiloxane, a platinum catalyst, and an aluminum silicate, and thereafter allowing a foam to form. Preferably, the aluminum silicate comprises about from thirty percent (30%) to about forty percent (40%) by weight of the total composition. The new foams are economical and have improved fire retardancy, physical strength, sealing and wear characteristics, and consistency of composition. The new foams are especially useful as fire retardant insulation in the construction industry, especially as a protective encasement for mechanical and electrical wires, pipes, conduits, and the like.

Abstract: A sealant for the remedial sealing of self-sealing coke oven doors, or ordinary coke oven doors sealed with a conventional lute, or for sealing spigot joints in off-gas pipe lines in coke oven installations comprises a mixture of from 25 to 45% of a latex, (preferably a PVA-based latex) from 10 to 25% water, from 25 to 45% of a particulate filler (preferably a talc) and from 5 to 15% of an inorganic fibre (preferably an asbestos fibre). At least 40% of the fibre should pass through a British standard 100-mesh sieve.The sealant may vary from a flowable to a putty or paste-like consistency and may be applied by spraying or trowelling as appropriate. If the inorganic fibre is not an asbestos the sealant may also include a proportion of a water soluble thickener to enhance the compatibility of the mixture.

Abstract: A binder composition for binding foundry sand particles to form molds and cores in sand mold casting processes which may be aluminum alloy casting processes, comprising a thermosetting resin and powdery zinc carbonate which is dispersed in the resin and, while the molds and cores are heated by the poured molten metal, undergoes thermal decomposition with generation of carbon dioxide gas which aids the molds and cores to become readily disintegratable.

Abstract: Organopolysiloxane foams are prepared by heating a mixture containing (A) a diorganopolysiloxane, (B) silicon dioxide having a surface area of at least 50 m.sup.2 /g, (C) a peroxide compound, (D) at least one organosilicon compound containing at least 2 weight percent of Si-bonded hydroxyl groups and (E) at least one organopolysiloxane having Si-bonded hydrogen, to a temperature between 280.degree. and 320.degree. C. at a pressure which does not exceed the pressure of the surrounding atmosphere.

Abstract: The gel range of acid-acting delayed-action gelling agents, such as sodium silicofluoride, in latex spread foam compounds which are to be gelled by subjecting them to a preliminary heat treatment prior to drying is substantially broadened by including a water-soluble ammonium or amine sulfamate in the compound. At least 0.5 parts by weight of the sulfamate should be used per 100 parts by weight of dry solids in the starting uncompounded latex. It can be added to the latex at any time before or during the compounding step and it is preferably added with 0.5-1 part of a soap per part of sulfamate and also with sufficient ammonium hydroxide or other ammonia donor compound to maintain the pH of the compounded latex composition at 9.5 or higher.

Abstract: Unsaturated polyester resins will form foamed or solid plastics with water-binding agents containing an oxidated silicon compound in the presence of an initiator.

Abstract: A fire protective mastic is provided, whose essential components are solids including a low fusing ceramic frit, hydrated solids having chemically bonded water which is released as a fire protective water vapor when heated, solids which expand or intumesce during the same heat application to form a porous, expanded or foamy insulating body, solids which have a fire break effect, such as antimony oxide and zinc tetraborate, and binder solids which are thermoplastic resins and serve to bind the solids into a flexible coating when applied, the binder solids being dispersed as an emulsion in water and mixed with the other solids to form a mastic. With further addition of water it is converted to a selected viscosity for application by troweling, coating or spraying.

Abstract: This invention relates to a novel elastomeric foamed material which has been found to exhibit a variety of unusual and desirable features both in its physcial properties and in its process of manufacture. These foamed compositions of a lightly sulfonated elastomeric gum contain a non-volatile polar plasticizer and preferably extenders such as oil and fillers. These elastomer foams exhibit an unusal profile of physical properties including extremely rapid production, melt reprocessability of fabricated articles, a novel memory characteristic, and high temperature reshaping of foamed objects while maintaining a good foam structure. These novel foams can be manufactured with relatively uniform cell structures and with small cell sizes at foam densities from near bulk density to less than 0.1g/cc.

Abstract: An electrical insulation foamed plastic is produced using sulfur hexafluoride adsorbed on molecular sieves as the foaming agent and a low shear mixing technique.

Abstract: Silicon halides will react chemically with polyols to produce polyol silicate resinous products which will react chemically with polyisocyanates to produce polyisocyanate silicate solid or cellular solid products.

Abstract: The method of production of chemically set compositions which show no shrinkage or which increase their volume during setting finding their application in building engineering, electrotechnical engineering and other fields of technology, consists in adding a special expanding system to a composition comprising synthetic resins or elastomers. Said system consists of an expanding agent, an expansion promoter, and if need be an expansion moderator, and sodium and/or potassium and/or magnesium fluosilicate. As the expanding agent substances are used having a porous structure and sorption properties, as for instance aluminosilicates, and as the expansion promoter substances are used having a polar structure and a critical diameter of the molecule smaller than that of the pores of the expanding agent, as for instance alcohols.

Abstract: This invention relates to a novel elastomeric foamed material which has been found to exhibit a variety of unusual and desirable features both in its physical properties and in its process of manufacture. These foamed compositions of a lightly sulfonated elastomeric gum contain a non-volatile polar plasticizer and preferably extenders such as oil and fillers. These elastomer foams exhibit an unusual profile of physical properties including extremely rapid production, melt reprocessability of fabricated articles, a novel memory characteristic, and high temperature reshaping of foamed objects while maintaining a good foam structure. These novel foams can be manufactured with relatively uniform cell structures and with small cell sizes at foam densities from near bulk density to less than 0.1g/cc.

Abstract: Intumescent coating composition for use in the spray-coating of beams and other structural members to protect them against the effect of fire and containing an epoxy resin film-forming binder and melamine phosphate spumific agent, in a weight ratio of less than 7.5:1, are improved by the inclusion therein of 1 to 15 percent by weight of inorganic fibres having a silica content of less than about 50 percent by weight of an aluminium oxide content preferably greater than about 50 percent by weight.The inorganic fibres may be mineral or ceramic and have a length of less than about 1 mm and a mean diameter of less than about 0.01 mm. The epoxy resin may be diglycidylether capable of being cured by the addition of a curing agent.

Abstract: Silicone rubber compositions comprising (A) a diorganopolysiloxane in which the organo substituents are 0.01 to 2 mole % vinyl groups, 0 to 10 mole % phenyl groups and the remainder is alkyl groups, (B) an organohydrogenpolysiloxane, (C) a (O) valent platinum-(III) phosphor complex and, optionally, (D) a filler. These compositions can be cured with steam. Foamable compositions comprising (A), (B), (C) and hydrophobicized wet-process silica.

Abstract: A low density, flame-resistant foamed composition is formed by heating a thorough mixture of branched polyphenylene and an inorganic fiber to above about 800.degree. F.

Abstract: Certain polymeric modifiers are surprisingly effective for injection molding and extruding thermoplastic structural foam of lower density, improved appearance, more uniform cell structure, and for lowering injection molding cycle time.

Abstract: Extruded structural members are produced from polyolefins reclaimed from lead-acid battery cases which heretofore, because they are not biodegradable, have created an ecological problem. Such structural members have an impact strength which nominally is 17% greater than the impact strength structural members formed of corresponding virgin polyolefins.

Abstract: This specification relates to foams produced from ion leachable glass and a polycarboxylic acid.

Abstract: Low density, closed cell, soft foam products having dimensional stability are made from ethylenic resins having low stiffness, especially comprising copolymers consisting essentially of ethylene and monoethylenically unsaturated non-ionic comonomers, by release to lower pressure of a flowable, foamable gel under pressure, e.g., by extrusion foaming, wherein the gel comprises the ethylenic polymer and a volatile mixed blowing agent. The starting polymers are preferably copolymers of ethylene and vinyl acetate having stiffness less than about 20,000 psi. The mixed blowing agents are particularly characterized as mixtures of dichlorodifluoromethane and at least one fluorocarbon constituent A, as defined. Exemplary mixtures contain (I) dichlorodifluoromethane and (II) from 35 to 50 percent chloropentafluoroethane, octafluoropropane or octafluorocyclobutane based on the mixtures of I and II.

Abstract: There is disclosed a novel process and product produced thereby for the selective stretching of incremental portions of a substrate of a synthetic thermoplastic material selected from the group consisting of a thermoplastic orientable polymer or a blend of a thermoplastic orientable copolymer in which there is admixed an incompatible second phase selected the group consisting of an incompatible polymer or inorganic material. The substrate is stretched in grooved roller pairs by controlling the velocity of introduction of the substrate to maintain the velocity substantially identical to the surface velocity of the roller pair. Stretching of the blends produce an opaque, low density porous sheet.

Abstract: Thermoplastic polymeric laminates are prepared which have one layer of filled styrene polymer composition, and at least one layer of a dissimilar polymer selected from polyolefins such as polyethylene, polypropylene and polybutene, and nitrile group containing barrier polymers. The filled styrene polymer composition contains from 5 to 50 parts by weight filler, and is the product of mixing a styrene polymer masterbatch of impact polystyrene, filler, rubber and oil with polystyrene. The laminates can be used for thermoforming thin walled articles such as cups, plates, trays and containers.

Abstract: The invention refers to a blowing agent composition consisting of 1,4 butan-diol-bis-(carbonic acid ester-benzoic acid anhydride) and silicon dioxide. Silicon dioxide reduces the decomposition temperature of the anhydride while at the same time increasing the yield of gas substantially.

Abstract: A process for forming a foamed thermoplastic material in which a carrier member made, for example, of a vegetable material such as lignocellulose-containing fibers or cork particles, and having bonded thereto, by either capillary bonding or molecular bonding, a gas bubble forming medium, such as water or aqueous dispersions, is added to the plastic material, whereby, when the temperature of the plastic is raised above the temperature at which the medium forms bubbles, gas bubbles, are formed and form cavities in the plastic. The carrier can also act as a reinforcing agent for the plastic.

Abstract: A cellular high-temperature insulation composite molded product comprising the molded and cured product obtained by preparing a mixture of(1) a dry blend of(a) expanded perlite,(b) a calcium aluminate cement,(c) a refractory clay, and(d) wollastonite, with(2) an aqueous liquid composition comprising(a) an auxiliary binder, and(b) waterAnd molding and curing the mixture, and a method for the production of the above-described cellular high-temperature insulation composite molded product. Additional embodiments comprise use of reinforcing fibers and a surface active agent additionally in the aqueous liquid composition, generally as a foamed aqueous liquid composition and use of a chemical cement curing accelerator additionally in the aqueous liquid composition.