Abstract: The present invention relates to a gasket (7) for a pre-filled syringe 1 into which liquid (3) is charged, wherein a peripheral side surface of the gasket (7 a) that is in contact with an inner surface of the syringe barrel (2) is provided with a restriction (8), the bottom surface (7c) of the gasket (7) that is not in contact with the liquid (3) is formed into a tapered shape (10) and the gasket (7) has a hardness comprised from 57 to 60 when measured by a JIS hardness meter.

Abstract: A gasket 7 used for a prefilled syringe 1 in which liquid 3 is filled, having a constriction 8 on its circumferential side face in contact with an inner surface of a syringe barrel 2 and having a bottom face 7c which is not in contact with the liquid 3 whose circumference is formed in a tapered shape.

Abstract: A gasket 7 used for a prefilled syringe 1 in which liquid 3 is filled, having a constriction 8 on its circumferential side face in contact with an inner surface of a syringe barrel 2 and having a bottom face 7c which is not in contact with the liquid 3 whose circumference is formed in a tapered shape.

Abstract: Disclosed herein is an aqueous solution containing a lipid-soluble active vitamin substance and/or ubiquinone. The solution has a pH of 5.5-8 and additionally contains a hydrogenated lecithin and neutral amino acid. It is stable and free from side effects, and is rather easy to prepare.

Abstract: A reaction injection molded article formed with threads and a method of molding same, wherein threaded members, such as threaded inserts, helicoils, etc., are positioned in the cavity of a reaction injection mold, and molding material is injected into the cavity to form the threaded members into a unitary structure with a body of the reaction injection molded article. The threaded members are securedly held in place by a surface layer of relatively high density. The molding material is a mixture of an A liquid and a B liquid, the A liquid containing 100 weight parts of polyether polyol obtained by adding alkylene oxide to various kinds of alcohol or amine, 1-5 weight parts of a reaction promoting agent (catalyst) comprising tertiary amines, tin compounds, etc.

Abstract: A composition for polyurethane foam comprising (a) polyols containing at least one of alkylene oxide adducts of aniline-formaldehyde condensates and alkylene oxide adducts of reduced compounds of nitrated toluenes in an amount of 30 to 70% by weight of the polyols, (b) at least one isocyanate of the formula: ##STR1## a fire retardant, together with one or more conventional catalysts, foam stabilizers, blowing agents and the like additives, can give fire retardant, high impact and heat resistant urethane foams.

Abstract: A method for soldering a pipe comprises the following steps: forming a concave portion on a flat metal sheet with solder coated thereon uniformly over its whole surface, opening an aperture at the bottom of the concave portion, making said flat metal sheet circular to make a pipe, inserting a member into said concave portion and heating said pipe and member together to melt said solder so that it infiltrates into the clearance between the inner surface of said concave portion and outer surface of said member.