Abstract: A photocurable fixture for orthopedic surgery has a base material and a photocurable resin retained in the base material and containing a urethane (meth)acrylate oligomer and a photopolymerization initiator which absorbs a light within a range of 400 to 700 nm. The urethane (meth)acrylate oligomer being represented by the following formula (I), where A denotes a diisocyanate residue, and each of X and Y denotes a residue obtained by removing a hydroxy group from a (meth)acrylate having a hydroxy group. In formula (I) at least 40 mol % of X and Y is a residue obtained by removing a hydroxy group from a (meth)acrylate having a hydroxy group represented by the following formula (II), where in Formula (II) each of R1 to R6 denotes a hydrogen atom or a methyl group.

Abstract: A fixture for orthopedic surgery comprises a photocurable resin containing a urethane type (meth)acrylic acid derivative oligomer obtainable by a polyisocyanate having at least three isocyanate group, and a (meth)acrylic acid derivative having an active hydrogen group; and a photopolymerization initiator which absorbs light of 400 to 700 nm. The photocurable resin is retained in a base material to form a support material. The inner side of the support material is covered with a buffer material and the outer side thereof is covered with a cover material to obtain a splint material as a fixture for orthopedic surgery. The buffer material side of the splint material is put on an affected part of the body and a bandage is wound over it, and then molding is carried out using irradiation with visible light to cure the photocurable resin. As the curing proceeds, a splint is obtained for fixing and supporting the affected part.

Abstract: It is intended to obtain a photocurable fixture for orthopedic surgery for which required strength can be obtained in a short period of time with visible light. A photocurable resin containing a urethane (meth)acrylate oligomer of the following formula (I) and a photopolymerization initiator which absorbs a light of 400 to 700 nm is prepared. This photocurable resin 4 is retained in a base material 3 to form a support material 5. The inside of this support material 5 is covered with a buffer material 6 and the outside is covered with a cover material 2, to obtain a splint material 1 as a fixture for orthopedic surgery. The buffer material 6 side is put on affected parts, and a bandage is wound over it, and then molding is carried out under irradiation with visible light. As the curing proceeds, a splint is obtained and the affected parts can be fixed. (in the formula (I), A denotes a diisocyanate residue, and each of X and Y denotes a (meth)acrylate residue having a hydroxy group.

Abstract: A forming material for the fabrication of appliances for fixing, supporting, correcting and holding human bodies, characterized by a main forming material body including a quantity of granulated materials each coated with a moisture-curable urethane prepolymer contained within a water-permeable material container, the main forming material body being hermetically enclosed in a moisture-impermeable material container, wherein the moisture-curable urethane prepolymer and the water-permeable material container are unreactive with each other and have a low adhesive strength with respect to each other to provide good long term preservability and ease of operability to allow modeling and conforming the main forming material body to a desired shape.

Abstract: A water-curable support bandage constitutes a flexible fabric coated with a water-curable polyurethane resin composition containing a polyurethane prepolymer consisting of a polyol and a polyisocyanate, a catalyst and a stabilizer, wherein the polyol contains a polyethylene glycol and a bisphenol system diol. The water-curable support bandage provides greater storage stability, working time adequate for application to a diseased or injured body part, adequate modeling time, and cures rapidly thereafter to achieve a weight bearing strength. In the polyol a polypropylene glycol can be substituted for the polyethylene glycol.

Abstract: Proposed is a moisture-curable polyurethane resin composition having good storage stability under a moisture-free condition without affecting the curability in the presence of moisture. The composition comprises (a) a polyurethane prepolymer as a reaction product of a polyol compound and a polyisocyanate compound, (b) a catalytic compound to promote curing of the composition and (c) a stabilizer which is trifluoromethane sulfonic acid in a limited amount. The improvement in the storage stability of the composition is particularly remarkable when trifluoromethane sulfonic acid is used in combination with a specific curing catalyst. The composition is useful in the preparation of a surgical casting tape by coating or impregnating a flexible substrate web such as a glass fiber cloth therewith.

Abstract: A novel morpholino-substituted tertiary amine compound is proposed which is tris[2-(4-morpholino)ethyl] amine or a derivative thereof by optionally substituting methyl and/or ethyl groups for a part or all of the hydrogen atoms at the 2- and 6-positions of the morpholine rings. The amine compound can be synthesized by heating tris[N,N-di(2-hydroxyethyl)aminoethyl] amine or a corresponding derivative thereof in a mixture with sulfuric acid. The amine compound is useful as a catalyst for the urethane-forming reaction between a polyisocyanate compound and a polyol compound without the problems of environmental pollution or unpleasant odor as in the use of methyl or ethyl morpholine for the same purpose.

Abstract: The invention provides a novel compound which is a bis(4-alkyl-substituted piperazinylalkyl) ether such as bis[2-(4-methylpiperazinyl)ethyl] ether and bis[2-(4-ethylpiperazinyl)ethyl] ether. The compound, which can be prepared by the dehydrochlorination reaction between a 1-alkyl-substituted piperazine and a bis(chloroalkyl) ether, is useful as a catalyst for the urethane-forming reaction between a polyisocyanate compound and a polyol compound to give an advantage that a sufficiently long mixing time is available to ensure full uniformity of the reaction mixture before substantial proceeding of the reaction.

Abstract: A urethane catalyst which is an imidazole ether compound of the formula ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are independently hydrogen, methyl or ethyl and R.sub.4 is ethylene, n-propylene or isopropylene.The imidazole compounds provide for delayed initiation while maintaining an acceptable cure time in the production of polyurethane foam.