Abstract: Pressure sensitive adhesives for transdermal absorption formulations comprising a segmented polyurethane, which can control dissolution and a releasing property of drugs of various kinds which are solid at normal temperature; said segment being an alkylene oxide chain which is in a liquid state at a temperature of around normal temperature to around body temperature, and said segment containing a hydrophilic alkylene oxide chain and a hydrophobic alkylene oxide chain, or comprising one or both of them and an alkylene oxide chain in which a hydrophilic moiety and a hydrophobic moiety are present in the mixed manner.

Abstract: The present invention provides a transdermal absorption preparation whereby a drug, which takes effect with a small amount, and is liable to be decomposed, solid at ordinary temperatures, water-soluble and less absorbable into the skin, can be stored stably for a long period of time and, can be transdermally administered at a high releasing ratio and yet releasing slowly, when applied to the skin. The constitution of the present invention is as follows: a transdermal absorption preparation which comprises a drug-storing layer containing a drug and having a drug-releasing face coated with a drug-releasing controlling membrane, wherein said drug-storing layer comprises as a base a heat-sensitive segmented polyurethane represented by the general formula:R--A--(U)--F--(U)--B--R'wherein A and B each represents a polymer of ethylene oxide, propylene oxide, tetramethylene oxide or 1,2-butylene oxide, or a random or block copolymer thereof, R and R' each represents a terminal H, CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.

Abstract: A polymeric piezoelectric material including a polylactic acid molded article having been uniaxially drawn to an extent causing no fibrillation. The piezoelectric material exhibits piezoelectric properties equal to or higher than those of electret type or polypeptide type piezoelectric materials while having high enough mechanical strength to be processed into various articles ranging from films to profiles depending on the end use.

Abstract: A controlled release insect pest repellent comprising p-menthane-3,8-diol blended with an ethylene/vinyl acetate copolymer is disclosed. This controlled release insect pest repellent can show continuous controlled release of the repellent component, i.e., p-menthane-3,8-diol, for a prolonged period of time so as to effectively exterminate insect pests.

Abstract: This invention relates to a repellent material comprising an amide type repelling ingredient, a chlorinated polyethylene and a thermoplastic elastomer, and more particularly to an insect repellent material for preventing insects such as flies, mites, cockroaches and other insects from invading into electronic balances, telephones, computers, facsimiles, automatic vending machines and others in kitchens, foodshops, food storages, foodfirms, or offices, clean rooms, which has an excellent repelling effect to the insects, the repelling effect being controllable for a long period of time in view of using aims.

Abstract: An ionic conductive polymeric sticking agent comprising: (a) a reaction product of (i) a polyurethanepolyol prepolymer having an alkylene oxide chain and/or a polyol having an alkylene oxide and (ii) a polyurethane polyisocyanate prepolymer having an alkylene oxide chain, and (b) an ionic compound.

Abstract: A process for producing a photodegradable rubber foamed products of excellent softness, which comprises mixing 1,2-polybutadiene with 0.1 to 3.0% of a photosensitizer and with a thermally decomposable foaming agent, irradiating with ultraviolet ray of a wavelength of 240 to 400 m.mu. for 10 minutes or less to form a cross-linked material having a gel fraction of 30 to 80% (in boiling toluene; 7 hours), and heating to 150 to 230.degree. C. to form a foamed product. In particularly preferred embodiments of this invention, the foaming agent is p,p'-oxybis (benzenesulfonylhydrazide).

Abstract: A process for producing an open cell foam by irradiating a composition comprising (a) a thermoplastic resin polymer blend including 1,2-polybutadiene as one component, (b) a photosensitizing agent and (c) a thermally decomposable foaming agent, with ultraviolet light having a wavelength ranging from about 254 to about 400 m.mu. to thereby cross-link mainly the 1,2-polybutadiene, and subsequently foaming the composition at a temperature higher than the softening point of the 1,2-polybutadiene and that of the thermoplastic resin polymer blended therewith and higher than the decomposition temperature of the foaming agent.

Abstract: Synthetic leather comprising cross-linked foamed syndiotactic 1,2-polybutadiene as a main ingredient.