Abstract: A process for dispersing particles of an organic commpound in water is disclosed, which comprises dispersing the organic compound in water using (1) a water-soluble high molecular weight compound having a molecular weight of at least 10,000 and (2) a copolymer formed from a monomer represented by the following formula (I) and a monomer represented by the following formula (II), said copolymer having a molecular weight of not more than 10,000: ##STR1## wherein M.sub.1 and M.sub.2 each represents an alkali metal atom or an ammonium group; R.sub.1 represents a hydrogen atom, a methyl group, or an ethyl group; and R.sub.2 represents an alkyl group having from 2 to 18 carbon atoms.

Abstract: It is the object of this invention to provide a method for the preparation of an antiblocking agent which is effective in its antiblocking activity but is considerable less visible in photographic enlargements made from the film containing the antiblock of this invention.There is described a process for the preparation of monodispersed polymer particles between 5 and 10 microns in diameter which comprises preparing a dispersion of monosized seed polymer particles and then adding to this dispersion an ethylenically unsaturated monomer which is different from the monomer used to prepare the seed polymer particles, together with a polymerization initiator and completing the polymerization, the refractive index of one of the polymers produced being greater than 1.54 and the refractive index of the other polymer being less than 1.54.The refractive index of gelatin is 1.54. There is produced by the process of the present invention a particle which comprises two polymers.

Abstract: The present invention relates to a first low-temperature insulating material which comprises polyvinyl chloride, a plasticizer, a water-containing or absorbing gel or an aqueous solution of a water-soluble polymer and an emulsifier and a second low-temperature insulating material which comprises polyvinyl chloride gelled by mixing with a plasticizer and a surface-covered, water-containing hydrogel. The insulating materials are inexpensive and show excellent heat-insulating properties and excellent flexibility at low temperatures.

Abstract: Novel thermotropic hydrogel forming polymers are described, which are ramdom copolymers of N,N-dimethyacrylamide with methoxy-ethyl acrylate or methacrylate. The linear polymers exhibit in water a lower-critical-solution-temperature (LCST) between 0.degree. and 70.degree. C. The water swelling of the crosslinked polymers is extremely temperature dependent and the gels show sharply defined clear to opaque transitions. The novel polymers are useful in drug delivery systems, absorption and extraction processes and as qualitative thermometers, thermosensors and self-activating sunscreens, for example for greenhouses.

Abstract: A pigment-attached phosphor in which pigment particles are attached to the surfaces of phosphor particles by a binder, the binder being 0.01 to 1.0 parts by weight and preferably 0.05 to 0.80 parts by weight of gelatin and 0.01 to 0.5 parts by weight and preferably 0.02 to 0.40 parts by weight of urea resin, all against 100 parts by weight of phosphor, the weight ratio of the gelatin and urea resin being within a range of 1:1 to 10:1 and preferably 1:1 to 8:1. The gelatin and urea resin ensure a strong and better attachment of the pigment particles to the surfaces of the phosphor particles.

Abstract: An adhesive or coating formulation useful in biomedical application and particularly well suited for use in aqueous environments is provided comprising:(1) a bioadhesive polyphenolic protein component having from about 5 to about 99 weight percent of a proteinaceous substance comprising from about 10 to about 400 of the following repeating decapeptide unit: ##STR1## in which each X is hydrogen or hydroxyl and each R is hydrogen or methyl; (2) from about 1.0 to about 40 weight percent of a cross-linking agent which promotes cross-linking of the decapeptide;(3) one or more additives which promote the desired properties of the formulation, said additives comprising at least one surfactant and being present in an amount of from 0% to about 90% by weight, and(4) a filler compatible with the intended use of the formulation, said filler being present in an amount of from 0% to about 50% by weight.

Abstract: The invention disclosed is a hydrogel-forming wound dressing or skin coating material suitable for household and veterinary use, consisting substantially entirely of wound-compatible and skin-compatible ingredients and comprising a first hydrophilic polymer, selected from polymers or copolymers of acrylic acid, polymers or copolymers of methacrylic acid, polymers or copolymers of itaconic acid, polymers or copolymers of maleic acid and polymers or copolymers of 3-butene-1,2,3-tricarboxylic acid, or combinations thereof, a second hydrophilic polymer which is capable of interacting with the first polymer to produce, upon drying, a hydrogel of improved water resistance and film forming properties relative to the first polymer alone and water. This material is film forming and substantially transparent but capable of being made opaque.

Abstract: Collagen in tactoid form obtained by forming an aqueous solution containing dissolved collagen and a water soluble or miscible polymer adapted to precipitate collagen out of solution in the form of tactoids.

Abstract: The invention disclosed is a hydrogel-forming wound dressing or skin coating material suitable for household and veterinary use, consisting substantially entirely of wound-compatible and skin-compatible ingredients and comprising a first hydrophilic polymer, selected from polymers or copolymers of acrylic acid, polymers or copolymers of methacrylic acid, polymers or copolymers of itaconic acid, polymers or copolymers of maleic acid and polymers or copolymers of 3-butene-1,2,3-tricarboxylic acid, or combinations thereof, a second hydrophilic polymer which is capable of interacting with the first polymer to produce, upon drying, a hydrogen of improved water resistance and film forming properties relative to the first polymer alone and water. This material is film forming and substantially transparent but capable of being made opaque.

Abstract: An assembly for monitoring ionising radiation which comprises coated on a base a binder layer containing a polychlorinated hydrocarbon and a color former.The assembly can be used to monitor levels of radiation of from 0.1 MRads to 10.0 MRads.

Abstract: Dry material which can be hydrated into an aqueous gel comprising (1) a matrix comprising a macromolecular substance A, capable of forming a porous aqueous gel when it is in the presence of water, (2) a water-soluble linear polymer B, (3) a plasticizer for the macromolecular substance A and, (4) dispersed in the matrix, particles of a polymer C obtained from at least one water-immiscible monomer.The material can be obtained by mixing an aqueous solution of A with the polymer B, the plasticizer and a latex of polymer C, followed by cooling, shaping and drying of the aqueous gel obtained.The dry material can be used in biological applications after rehydration.

Abstract: Aqueous redispersible powders which contain a water-soluble polymer and at least one organic silicon compound, in which at least 50 percent by weight of the organic silicon compound(s) used to prepare these powders are liquid or solid at room temperature at 1,020 hPa (abs.), have a boiling point of at least 150.degree. C. at 1,020 hPa (abs.), and contain an average of not more than 1.8 SiC-bonded organic radicals per silicon atom, and have at least one hydrogen atom bonded directly to silicon per molecule, or at least one hydroxy group bonded to silicon per molecule, or at least one hydrocarbon radical bonded to silicon via oxygen per molecule which may be substituted by an alkoxy group, or a mixture of at least two such condensable substituents in which the organic silicon compound(s) are used in an amount of at least 30 percent by weight, based on the total weight of the powder (calculated as anhydrous powder).

Abstract: A moldable hydrophilic polymer composition, preferably gelatin, for use in an injection molding device preferably controlled with a microprocessor. The composition has a molecular mass range of 10,000 to 2,000,000 Dalton or a molecular mass range of 10,000 to 2,000,000 and 10,000,000 to 20,000,000 Dalton. The composition has a water content range from 5 to 25% percent by weight.

Abstract: A polymer composition of excellent compatibility which comprises a block copolymer containing a polyvinyl alcohol polymer unit as one constituent and a polymer unit having an ionic group as another constituent, and protein. It is suitable, especially when the protein is gelatin, for making a photographic emulsion, microcapsules, or a photosensitive material, among others.

Abstract: The present invention provides a process for the production of reagent films in which an aqueous synthetic resin dispersion which contains the usual adjuvants and reagents is coated on to a solid substrate or on to a thin fabric in a thin layer and dried, wherein to the crude film mass used for the coating there are added 0.5 to 5% by weight of a scleroprotein hydrolysate with a molecular weight of from 5000 to 50,000 and 0.5 to 10% by weight of a higher alcohol containing 5 to 10 carbon atoms.

Abstract: A flexible continuous film is comprised of a physical admixture of a polypeptide, a plasticizer and a film-forming flexible polymer. When the film is moistened, the polypeptides exude therefrom.

Abstract: Medical grade pressure sensitive adhesive compositions comprising a homogeneous mixture of one or more polyisobutylenes or blends of one or more polyisobutylenes and butyl rubber, one or more styrene radial or block type copolymers, mineral oil, one or more water soluble hydrocolloid gums, and a tackifier. One or more water swellable cohesive strengthening agents, an antioxidant, and various other optional ingredients may be included within the adhesive composition.

Abstract: A pressure-sensitive adhesive having the capacity to absorb at least about 7 percent of its own weight in water and having a desirable combination of plasticity and wet-stick characteristics, as well as good dry skin adhesion. An adhesive composition particularly suitable for use as a stoma seal adhesive comprises (I) from about 30 to about 80 parts by weight each of (a) a pressure-sensitive adhesive component comprising a synthetic or natural gum-like substance and (b) a moisture absorbing component comprising a synthetic carbohydrate or natural water soluble or swellable hydrocolloid together with (II) from about 2 percent to about 20 percent by weight silica, based on the total weight of the adhesive composition.

Abstract: Novel chromogenic fluoran compounds of the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl radicals of from five to eight carbon atoms; R.sub.2 is selected from the group consisting of alkyl radicals of from one to eight carbon atoms; R.sub.3 is selected from the group consisting of hydrogen atom and lower alkyl radicals of from one to four carbon atoms; X.sub.1 and X.sub.2 are independently selected from the group consisting of hydrogen atom and lower alkyl radicals of from one to four carbon atoms, X.sub.3 is selected from the group consisting of hydrogen atom, lower alkyl radicals of from one to four carbon atoms, halogen atoms and trifluoromethyl radical; and n is an integer of a value of 1 or 2; providing that R.sub.1 does not represent an amyl radical when R.sub.2 is selected from the group consisting of alkyl radicals of from one to five carbon atoms, X.sub.1 and X.sub.2 are each a hydrogen atom, X.sub.

Abstract: Particles of a coloring agent having opaque sheaths which are the color of a mortar mass, are introduced into the reactive mortar mass to signal the distribution of hardener therein.

Abstract: Medical grade adhesive compositions comprising a homogeneous blend of one or more pressure sensitive adhesive materials and one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated such as gluten and long chain polymers of methyl vinyl ether/maleic acid are disclosed. The compositions may also include one or more water soluble hydrocolloid gums and may additionally contain one or more water swellable cohesive strengthening agents.

Abstract: The present invention relates to new modified azulmic acids, several processes for their preparation and their use as intermediate products for the synthesis of numerous products.

Abstract: An article of manufacture with adhesive properties comprising a gelatinous adhesive composition dispersed in a plastics matrix. The gelatinous adhesive composition is the resulting product of heating together in the absence of solvent at least one polyhydric alcohol and at least one material selected from the group consisting of gelatin, naturally occurring high molecular weight polysaccharide gums, and resins which are a copolymer of a vinyl ether and a second component selected from organic acid anhydrides and their corresponding free acids. Heating promotes a chemical reaction between the components and also drives off water produced in the reaction which is carried substantially to completion.