Abstract: A method of crystalline lens replacement for eyes comprises the steps of forming a small hole that penetrates through the lens capsule, removing a part of the crystalline lens substance through the hole, refilling the lens capsule by injecting a composition comprising a hydrophilic polymer directly into the lens capsule, and closing the hole. The method of crystalline lens replacement may be performed on animals or humans. Furthermore, the method of crystalline lens replacement may be performed on a patient suffering from cataract, where the opaque crystalline lens substance in the lens capsule is removed.

Abstract: A method of crystalline lens replacement for eyes comprises the steps of forming a small hole that penetrates through the lens capsule, removing a part of the crystalline lens substance through the hole, refilling the lens capsule by injecting a composition comprising a hydrophilic polymer directly into the lens capsule, and closing the hole. The method of crystalline lens replacement may be performed on animals or humans. Furthermore, the method of crystalline lens replacement may be performed on a patient suffering from cataract, where the opaque crystalline lens substance in the lens capsule is removed.

Abstract: N-(2-methoxyethyl)-N-isopropylacrylamide is a novel compound. The polymer obtained by polymerizing this novel compound is a novel hydrophilic-hydrophobic thermally reversible type macromolecular compound having a transition temperature in the range of 12.degree. C. to 14.degree. C.

Abstract: A metal is dissolved by a method which comprises establishing contact of the metal with a quaternary ammonium compound and a halogenated hydrocarbon or with a quaternary ammonium compound, a halogenated hydrocarbon, and a polar solvent.

Abstract: A dispersion containing minute polymer beads possessing a thermosensitive characteristic is produced by a method which comprises preparing an aqueous solution of an acrylamide type vinyl compound, the homopolymer of which exhibits a hydrophilicity-hydrophobicity thermoreversible solubility characteristic, adding a cationic or anionic surfactant in a ratio equaling or exceeding the micelle concentration to the aqueous solution, adjusting the resultant aqueous solution to a temperature not lower than the clouding point thereof and, at the same time, polymerizing the acrylamide type vinyl compound in the aqueous solution thereby forming a polymer emulsion, exposing the emulsion to an ionizing radiation thereby cross-linking minute polymer beads in the emulsion, and thereafter depriving the resultant polymer emulsion of the surfactant.

Abstract: 3-n-dodecylthiophene-3-methylthiophene copolymers are novel compounds having repeating units represented by the formula, ##STR1## and repeating units represented by the formula, ##STR2## randomly and linearly arranged and possessing a weight average molecular weight in the range of 60,000 to 100,000. 3-n-dodecylthiophene-3-methylthiophene copolymer compositions are novel compounds obtained by doping the copolymers mentioned above with a dopant. The copolymer compositions are obtained by electrolyzing a solution which consists of a supporting electrolyte capable of releasing a dopant, 3-n-dodecylthiophene, 3-methylthiphene, and a solvent. The copolymers mentioned above is produced by reducing the product of the electrolysis.

Abstract: A colored macromolecular polymer is produced by a method which comprises dissolving a soluble salt of a noble metal in a liquid monomer, polymerizing the monomer having the soluble salt of the noble metal dissolved therein, and subjecting the resultant solid polymer to a heat treatment at a temperature equal to or exceeding the colloid-forming temperature of the noble metal.

Abstract: A fibrous support for immobilizing enzymes and cells is prepared as a roll formed by winding a braid on a tubular frame member. The braid is formed in a tubular shape with a plurality of rovings containing very thin long filaments. The roll is formed by cross-winding of the braid to crush intersecting portions of the tubular braid flat. The roll of braid has an external void ratio of 15 to 30%. The thin long filaments of the tubular braid are obtained by spinning a mixture of polymers to form a plurality of fibers containing a soluble component and an insoluble component, joining the fibers to form a roving, forming a tubular braid from a plurality of the rovings and washing the braid to dissolve out the soluble component to produce separated thin long filaments of the insoluble component.

Abstract: A metal is dissolved by being brought into contact with at least one halogenated hydrocarbon in the presence of a cationic surfactant.

Abstract: Rare earth metals are adsorbed on an ion exchange fiber comprising an ion exchanger having a strong cation exchange group and a weak cation exchange group, and the adsorbed metals are fractionally eluted with an aqueous solution of a chelating agent, whereby the respective rare earth metals can be separated at high efficiency in a short time. According to this method, elution can be accomplished at an elution rate of 5.0 or above in terms of space velocity.

Abstract: A novel enzyme-active fibrous material is proposed comprising fibers of a rtially aminoacetalized polyvinyl alcohol as the support and an enzyme adsorbed and bonded thereto such as glucose isomerase, invertase, urease and the like. The enzyme-active fibrous material of the invention is readily prepared by dipping fibers of the partially aminoacetalized polyvinyl alcohol in an aqueous solution of the desired enzyme. The enzymatic activity and the physical properties of the fibers are remarkably improved by the use of extra-fine fibers prepared with composite fibers of a partially aminoacetalized polyvinyl alcohol and a polyethyleneoxide subjected to selective leaching away of the latter component or by the use of so-called sheath-and-core type or side-by-side type composite fibers of which one of the components is a partially aminoacetalized polyvinyl alcohol.

Abstract: The invention presents a high-viscosity eye lotion with which lasting curve effects can be obtained with no feeling of foreign bodies to the eye as in the conventional eye salves used in treating eyes.The high-viscosity eye lotion of the invention comprises a swollen hydrated gel of a crosslinked polyvinyl alcohol and an eye-disease curative active ingredient contained therein. It is prepared by irradiating an aqueous solution of a polyvinyl alcohol with an ionizing radiation to such an extent that the polyvinyl alcohol is crosslinked to give a hydrated gel with an equilibrium swelling ratio in the range from 70 to 100 by weight and then dipping the hydrated gel in an aqueous solution of the eye-disease curative active agent.

Abstract: A water-containing plastic composition which comprises (a) 10-90 wt. % of water-containing powdery gel obtained by subjecting at least one water-soluble polymer such as polyvinyl alcohol, polyacrylamide, polyvinylpyrrolidone or poly(hydroxyalkyl acrylate), while it is in the state of an aqueous solution, to crosslinking reaction and then pulverizing the crosslinked product and (b) 90-10 wt. % of at least one plastic substance selected from thermoplastic and thermohardenable plastics. The water-containing plastic composition is suitable as a material for manufacturing poorly combustible molding materials.

Abstract: Immobilized enzymes are produced by adding radioresistant enzymes to 5-25% aqueous solutions of polyvinyl type high molecular compounds and irradiating the enzyme-containing solutions with a high dosage of ionizing radiant rays in an inert atomsphere or under a decreased pressure for thereby gelling said solutions.