Abstract: An improved denture adhesive that exhibits superior tack, adhesion, cohesive strength and spreadability characteristics is made from a hydrocarbon-free base consisting of a mixture of medium length chain triglycerides which have been mixed with a small amount of fumed silica and other components so as to improve the viscosity, spreadability and taste. Preferred triglycerides include captic and caprylic acids and in particular, a mixture of the caprylic and captic acids which are combines with fumed silica and a water soluble cellosic polymer and a synthetic methyl vinyl ether/maleic anhydride copolymer that is formulated as a paste or gel.

Abstract: Adhesive compositions comprising an aqueous based adhesive and one or more hydrophilic hydrocarbon surfactant(s) or fluorochemical surfactants and methods for bonding porous materials are described which are particularly suitable for bonding high density and/or high moisture content woods. Methods for bonding timber veneer and improving bond cure rates are also disclosed.

Abstract: Exfoliated layered silicate material derived from intercalates formed by contacting the layer material, e.g., a phyllosilicate, with an intercalant polymer to sorb or intercalate the polymer between adjacent platelets of the layered material. Sufficient intercalant polymer is sorbed between adjacent platelets to expand the adjacent platelets to a spacing of at least about 10 .ANG. (as measured after water removal), up to about 100 .ANG. and preferably in the range of about 30-45 .ANG., so that the intercalate easily can be exfoliated, e.g., when mixed with a thermoplastic or thermosetting matrix polymer melt, to provide a matrix polymer/platelet nanocomposite material--the platelets being exfoliated from the intercalate.

Abstract: Permanent aqueous marker inks are provided which include surfactant, a pigment, a film-forming polymer, and water. The surfactant may be a combination of a hydrocarbon, preferably an alkylphenol ethyoxylate and a fluorocarbon, or it may be a silicone.

Abstract: A hydrophilic, pressure sensitive adhesive of a poly(ethylene oxide) derived network plasticized with an essentially non-volatile, polar plasticizer present in an amount sufficient to form a cohesive, pressure sensitive adhesive. The polymeric network is prepared from an oligomeric precursor comprising difunctional poly(ethylene glycol) moieties which have been end-capped with ethylenically unsaturation. The adhesive is useful as a biomedical adhesive for transmitting or receiving electrical signals as a component of a biomedical electrode. The adhesive is also useful as a drug delivery device to deliver pharmaceuticals or other active ingredients to or through mammalian skin. The adhesive is also useful as a component in a skin covering for protecting mammalian skin or mammalian skin openings with antimicrobial agents. A method of preparation of the adhesive is also disclosed.

Abstract: At least 20% of poly(vinyl alcohol) (PVA) is dispersed in an aqueous solution of at least one salt dissolved therein selected from the group of sodium or potassium formate, sodium, potassium, or magnesium sulfate, sodium or potassium citrate, sodium or potassium polyacrylate, or mixtures thereof. This aqueous suspension of PVA is useful in systems in which PVA is dissolved in order to reduce the time of dissolution.

Abstract: The invention relates to a biocompatible ceramic dental prosthesis having a translucency similar to that of natural tooth enamel and a high mechanical strength.It comprises a rigid, porous infrastructure obtained by the reactive calcination of fine particles of alumina/magnesia spinel, alumina and magnesia, the pores of which are occupied by glass infiltrated at high temperature.The invention also relates to a manufacturing process for producing such a prosthesis.

Abstract: A degradable polymer composition essentially consisting of a mixture of a thermoplastic polymer composition primarily comprising polylactic acid or lactic acid-hydroxycarboxylic acid copolymer and one or more substance selected from starch and modified starch, and is a degradable polymer which does not cause problems such as environmental pollution and can be used for films, filaments and packaging materials, food packaging materials in particular.

Abstract: A hot melt stick that includes a core of a moisture-curable hot melt composition and a moisture-resistant shell coaxial with the core. The shell includes one or more ethylene-containing copolymers that are compatible with the core upon melting. The hot melt stick is adapted for delivery to the melting chamber of a hot melt applicator.

Abstract: Disclosed are materials and/or shaped articles based on a starch which has been thermomechanically digested at elevated pressures and temperatures and with the addition of water and/or lower molecular weight plasticizing agents, said starch containing thermoplastic synthetic polymer compounds in an at least largely homogeneous mixture. The materials and/or shaped articles according to the invention are characterized in that their contents of synthetic thermoplastic polymer compounds is derived from aqueous polymer dispersions comprising a disperse polymer phase in an aqueous phase and that the synthetic thermoplastic polymer compounds have been incorporated in the starch in combination with the aqueous phase in such a manner that the starch digestion has been effected by the concomitant use of the aqueous phase of the polymer dispersions.

Abstract: The biodegradable polymeric compositions comprise a starch based component and a polymeric component comprising polymers of hydroxyacids or mixtures thereof with polymers deriving from ethylenically unsaturated monomers, particularly polymers of ethylene-vinylalcohol or polyvinylalcohol.

Abstract: The invention discloses a composition for forming lens, which contains urethane acrylate prepolymer based on tolylenediisocyanate as a principal material, and further said composition containing brome acrylate at least by 10 to 40 weight %, caprolactone denatured hydroxypivalic acid ester neopentylglycoldiacrylate by 3 to 20 weight %, and bis-(acryloxyethoxy)bisphenol A by 3 to 60 weight %, and refractive index of said cured product being 1.5 or more, further discloses a Fresnel lens using said composition, and a transmission screen 1, in which a Fresnel lens 3 is formed on a base material 2.

Abstract: In a powder-liquid type of dental cold-polymerizing resin composition, the powder component comprises a specific polymer such as polymethylmethacrylate containing a pyrimidinetrione derivative and an organometallic compound mixed at a specific proportion, and the liquid component comprises a radical polymerizable compound containing an organic halogen compound and an aromatic tertiary amine mixed at a specific proportion used with a polymerization inhibitor.

Abstract: This invention relates to an improved adhesive composition having extended holding power accompanied by adhesion building properties during use and having increased gel adhesion, which composition consists essentially of (a) from about 10 to about 35 wt. % lower alkyl vinyl ether-maleic acid copolymer wherein from 0 to about 90 wt. % of the copolymer carboxyl units are converted to a mixture of salts selected from the group of calcium, sodium, strontium, zinc, magnesium and potassium; (b) an excess, with respect to said copolymer, of a non-crosslinked, non-ionic natural guar gum; and (c) from about 30 to about 70 wt. % oil base as a carrier. The invention also relates to the preparation and use of said adhesive for affixing dentures.

Abstract: A process is provided for preparing in aqueous emulsion, a bitumen/polymer binder with a continuous three-dimensional polymeric structure. The process comprises:a) forming a reaction mixture in an emulsion formation zone by feeding to the zone(i) a bitumen-polymer component comprised of a bitumen containing 0.5% to 15%, by weight of the bitumen, of a sulphur-crosslinkable elastomeric polymer, the bitumen/polymer component being in the form of a melt viscosity of not more than 2 Pa.s at the melt temperature,(ii) an aqueous phase containing an effective quantity of an emulsifying system, and(iii) a crosslinking system donating sulphur in a quantity such as to provide 0.

Abstract: The present invention relates to absorbent materials comprising fibers cross-linked by a suitable cross-linker therefor, and wherein said cross-linker is associated with substantially the entire surface of each fiber, said materials being preparable by mixing of an aerated suspension of the charged fibers with the cross-linker before heating and compressing, such fibers having a capacity for fluid absorption considerably greater than has been heretofore known for such materials.

Abstract: A biodegradable plastic added at an amount of a hydrophilic property imparting-substance providing wettability such that the contact angle of plastic surface to water is 70.degree. or less whereby the decomposability thereof with Basidiomycetes, the cultured products thereof and/or the processed products thereof is improved. A method for decomposing plastic under the conditions with limitation to nitrogen and/or carbon in decomposing such biodegradable plastic. In accordance with the present invention, the plastic which has conventionally been decomposed with difficulty can be decomposed efficiently.

Abstract: Ophthalmic lenses and lens blanks having high refractive index and high heat distortion temperature are produced by polymerizing a polymerizable, homogeneous composition comprising epichalcogen resin, aliphatic polythiol, and cyclic anhydride.

Abstract: A dampening water composition which is inexpensive and which does not contaminate working environment as well as exterior environment wherein the dampening water composition comprising water, a pH buffering agent, a water-soluble polymer and n-propyl alcohol, wherein at least a portion of the water-soluble polymer comprises pullulan.

Abstract: The addition of ethylene oxide/propylene oxide block copolymers containing 5 to 35 weight % of ethylene oxy groups and molar masses of the propylene glycol block between 1500 and 3000 to dry, hydraulic binder materials results in reduced dust formation, improved wettability, and enhanced flow properties of these materials when they are mixed with water.