Abstract: A polyimide precursor composition includes a resin having a repeating unit represented by the following Formula (I) and having an imidization ratio equal to or less than 0.2, a cyclic amine compound, and an acyclic aliphatic amine compound, wherein the resin, the cyclic amine compound, and the acyclic aliphatic amine compound are dissolved in an aqueous solvent: wherein in Formula (I), A represents a tetravalent organic group and B represents a divalent organic group.

Abstract: A polyimide precursor composition includes a polyimide precursor including a condensation polymer of a tetracarboxylic dianhydride composed of a first tetracarboxylic dianhydride having a benzene ring to which two carboxylic anhydride groups are bonded and a second tetracarboxylic dianhydride other than the first tetracarboxylic dianhydride, and a diamine compound; a tertiary amine compound; and a water-soluble solvent containing at least one kind selected from the group consisting of water and aqueous alcohol, wherein the polyimide precursor and the tertiary amine compound are dissolved in the water-soluble solvent.

Abstract: A photocurable resin composition which hardly causes leakage and is easily formed into a desired shape and an image display device using this photocurable resin composition are provided. Namely, a photocurable resin composition comprises a compound (A) having a photopolymerizable functional group and an oil gelling agent (B), is provided. Also, an image display device having a laminate structure including an image display unit having an image display part, a transparent protective plate, and a resin layer existent between the image display unit and the transparent protective plate, wherein the resin layer is a cured material of the above-described photocurable resin composition, is provided.

Abstract: A polyimide precursor composition includes an organic amine compound and a resin which contains a repeating unit represented by the following Formula (I) and has an imidization rate of 0.2 or less dissolved in a solvent containing water and one or more kinds of organic solvents selected from a water-soluble ether solvent, a water-soluble ketone solvent, and a water-soluble alcohol solvent: wherein A represents a tetravalent organic group, and B represents a divalent organic group.

Abstract: Monomers and crosslinkers derived from renewable resources that can be used to produce flexible, microporous, open-celled polymeric foam materials having physical characteristics making them suitable for a variety of uses, are disclosed. Monomer compositions derived from renewable resources, and having short curing times for preparing foam materials from high internal phase emulsions are also disclosed.

Abstract: A method of preparing a thermoplastic elastomer, and compositions thereof, are disclosed comprising: (I) mixing (A) a thermoplastic resin comprising more than 50 percent by volume of a polyester resin having a softening point of 23° C. to 300° C., (B) a silicone elastomer comprising a diorganopolysiloxane, where the weight ratio of said silicone elastomer to said thermoplastic resin is from 35:65 to 85:15, (C) a glycidyl ester compatibilizer, (D) an organohydrido silicon compound, and (E) a hydrosilation catalyst, components (D) and (E) being present in an amount sufficient to cure said diorganopolysiloxane; and (II) dynamically vulcanizing said diorganopolysiloxane, wherein at least one property of the thermoplastic elastomer selected from tensile strength or elongation is at least 25% greater than the respective property for a corresponding simple blend wherein said diorganopolysiloxane is not cured and said thermoplastic elastomer has an elongation of at least 30%.

Abstract: A method for preparing a thermoplastic elastomer is disclosed, said method comprising: (I) mixing (A) a Theologically stable polyamide resin having a melting point or glass transition temperature of 25° C. to 275° C., (B) a silicone base comprising a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl groups in its molecule and optionally (B″) 5 to 200 parts by weight of a reinforcing filler, the weight ratio of said silicone base to said polyamide resin is from 35:65 to 85:15, (C) a compatibilizer selected from glycidyl ester polymers or organofunctional grafted polyolefins, (D) an organohydrido silicon compound which contains an average of at least 2 silicon-bonded hydrogen groups in its molecule and (E) a hydrosilation catalyst, components (D) and (E) being present in an amount sufficient to cure said diorganopolysiloxane (B′); and (II) dynamically curing said diorganopolysiloxane (B′).

Abstract: Elastomeric silicones, especially elastomeric silicone polyethers, are prepared by combining and reacting (A) an ≡Si—H containing polysiloxane, (B) a mono-alkenyl polyether, (C) an active ingredient such as a vitamin, antimicrobial agent, sunburn prevention agent, astringent, or sex hormone, (D) an &agr;,&ohgr;-unsaturated hydrocarbon, (E) a platinum catalyst, and (F) an oil. The reaction of components (A)-(F) is allowed to continue, forming a crosslinked three-dimensional gelled network of the elastomeric silicone polyether containing the active ingredient and the oil. The compositions are useful in personal and health care applications, personal hygiene, and household cleaning applications.

Abstract: A room temperature-curable organopolysiloxane composition is disclosed, comprising (A) 100 parts by weight of an organopolysiloxane terminated with a silanol group or an alkoxy group, (B) from 0.1 to 30 parts by weight of an organosilicon compound containing more than 2, in average, of hydrolyzable groups bonded to the silicon atom per molecule, (C) from 1 to 650 parts by weight of an oil-absorbing filler which has been prepared by impregnating (a) a porous filler with (b) a volatile organic compound which is incompatible or partly compatible to component (A) and compatible with an organic oily substance in an amount of from 1% by weight based on the weight of the porous filler up to a saturation amount and, if desired, (D) a requisite amount of a curing catalyst. The composition exhibits satisfactory adhesion to a substrate in such adhesion operation as an FIPG system without requiring wiping of organic oily contaminants on the substrate, such as hydrocarbon oils, e.g.

Abstract: A cyanoacrylate monomer adhesive formulation which has improved thermal properties resulting from the inclusion in the formulation of an effective amount for enhancing the thermal resistance of the cured polymer of a naphthosultone compound having at least one strong electron withdrawing group thereon, suitably a nitro group.

Abstract: This invention provides methods for producing a high-molecular weight polycarbodiimide solution from an organic diisocyanate in the presence of a carbodiimidation catalyst, wherein 1) a chlorinated aliphatic hydrocarbon or 2) an alicyclic ether is used as a solvent. This invention also provides a polycarbodiimide solution with excellent stability in preservation.

Abstract: A copolymer latex which is useful in an adhesive composition, a paper coating composition, an adhesive composition for carpet lining and an adhesive composition for a rock fiber substrate is prepared by emulsion copolymerizing an aliphatic conjugated diene monomer and at least one other monomer copolymerizable therewith in the presence of a chain transfer agent and at least one compound having no copolymerizing reactivity selected from the group consisting of hydrocarbons having 5 to 12 carbon atoms, halogenated aromatic hydrocarbons, five or six membered ring heterocyclic compounds, aliphatic ethers and aliphatic esters in an amount of 1 to 100 parts by weight per 100 parts by weight of a total amounts of the aliphatic conjugated diene monomer and the other monomer.

Abstract: A binder resin comprises a vinyl copolymer, a mixture of vinyl copolymers, or a mixture of a vinyl copolymer and a vinyl polymer. A resin component with a molecular weight of not more than 10,000 is contained in an amount of from 5 to 50% by weight based on the whole resin. The vinyl copolymer or the mixture of vinyl copolymers has an acid anhydride group and a carboxyl group.

Abstract: Described is photochromic particulate material comprising a photochromic substance within a matrix of a polymerizate of a polyfunctional acrylate monomer. The photochromic particulate material may be produced by adding an organic photochromic substance to a polymerizable composition including a polyfunctional acrylate monomer and polymerizing the resultant admixture, e.g., by emulsion polymerization. In the case of emulsion or suspension polymerization, finely divided particulate organic photochromic materials are separated from the polymerization medium in the form of spheroidal thermoset photochromic particles of fairly uniform size. If desired, the particles recovered from the polymerization medium may be further ground in conventional attrition mills to further reduce the size of the particulate product. In the case of bulk polymerization, the polymerizate may be formed as a continuously cast sheet, which is then pulverized to a particulate material of pigmentary size.

Abstract: The process for preparing polyurethanes by the reaction of a bicyclic amide acetal and a polyisocyanate in the presence of a plasticizer such as dioctyl phthalate and a polyurethane catalyst such as stannous octoate is described.

Abstract: .alpha.-cyanoacrylate instant adhesive compositions obtained by adding benzophenonetetracarboxylic acid or anhydride thereof to .alpha.-cyanoacrylate and showing superior heat resistance of the degree of 150.degree. C. with keeping instant adhesive capacity.

Abstract: Macroscopic divinylbenzene gels are provided having a high concentration of chemically accessible free vinyl groups. The gels are prepared in a mixture of nonpolar and polar solvents and in the presence of a polymerization initiator under conditions to eliminate syneresis.

Abstract: An improved adhesive binder composition is provided for the preparation of lignocellulosic composite molded articles such as flake or particleboard, made from moldable compositions which comprises an organic di- or polyisocyanate and a cyclic alkylene ester of carbonic acid and optionally lignin, for application to the lignocellulosic material prior to the molding process to form the composite product.

Abstract: Rheology modifiers useful in water-based and organic solvent-based compositions are derived from the reaction of polyalkylene oxide, polyfunctional material, diisocyanate and little or no water. The modifiers are characterized by having a branched structure and containing substantially no terminal hydrophobic groups.

Abstract: Novel polymer/polyisocyanate compositions made by polymerizing at least one ethylenically unsaturated monomer in situ in a blend of a first organic polyisocyanate and a stabilizer. The stabilizer comprises a polyoxyalkylene polyol having a number average molecular weight of at least 4000; an isocyanato terminated prepolymer formed by reacting the polyoxyalkylene polyol and a second organic polyisocyanate with the proviso that the isocyanato terminated prepolymer and the first organic polyisocyanate provide greater than 25 equivalents of isocyanato groups per equivalent of hydroxyl groups; a polymer/polyol formed using the polyoxyalkylene polyol; a polymer/prepolymer formed using the polyoxyalkylene polyol with the proviso indicated for the prepolymer above; or a modified polyol containing an ester group formed using the polyoxyalkylene polyol.