摘要:
In injection molding thermoplastic resin compositions containing reinforcing materials and/or fillers, high quality molded articles superior in surface gloss and exhibiting substantially no surface defect can be obtained, by employing a technical measure, in which only superficial layer of the inner wall surface of the mold is selectively heated, by high-frequency induction heating, to a temperature above the heat distortion temperature of the thermoplastic resin composition employed prior to injection molding and cooling and solidifying the resin.
摘要:
The water-soluble metal soap compositions are provided comprising essentially a metal soap expressed by the general formula (RCOO)xM (Wherein M represents lithium or a non-alkali metal atom, x represents its valency and R represents a hydrocarbon radical having 4 to 20 carbon atoms) and a chelating agent such as polybasic carboxylic acids, polyaminocarboxylic acid salts, etc., the metal soap being contained therein in an amount in the range of 10 to 1/1000 part by weight based on one part of the chelating agent. The aqueous solutions of the metal soap compositions exhibit such a behavior as if they were a single surfactant, and also exhibit excellent surface active properties which are similar or superior to those of conventional surfactants. Further, addition of conventional surfactants to the compositions can notably enhance the performances of the chelating agent such as chelate effect and metal soap-solubilizing effect.
摘要:
A thermosetting resin composition suitable for use as a molding material comprising (a) a reaction product mixture obtained by preferably reacting 1 mole of a dicarboxylic acid anhydride having ethylenic carbon-carbon double bond such as maleic anhydride with 2-20 moles of a diamine such as 4,4'-diaminodiphenylmethane in a molten state and (b) an epoxy compound having more than one 1,2-epoxy group on the average gives a cured product excellent in heat resistance, etc., when cured with heating at a temperature of 150.degree. to 200.degree. C.
摘要:
A device for the storage of hydrogen, comprising a container, two porous plates opposed parallelly to each other across a fixed distance and fastened to the inner wall of the container, heating/cooling members disposed one each outside the porous plates and separated by a fixed distance from the corresponding porous plates, and an alloy capable of storing hydrogen placed in the spaces formed between the porous plates and the heating/cooling members.
摘要:
The present invention relates to a detergent composition containing an anionic surface active agent, imidobissulfate of the general formula(MSO.sub.3).sub.2 NM(in which M represents cation selected from the group consisting of sodium ion, potassium ion and ammonium ion) and at least one compound selected from the group consisting of sodium nitrilotriacetate and sodium citrate.
摘要:
A microscope according to the present invention is a mechanically durable and highly adaptable one featured by an interchangeable arm portion and various light sources detachably provided in the arm portion as in the conventional pan-purpose microscope and also in the base portion, and thus rendered adaptable to various observing methods by suitably selecting the light sources according to the purposes of observation.
摘要:
The present invention provides an apparatus for treating the top ends of flexible cords or filaments. It comprises holding means for holding articles having flexible cords, delivery means for delivering said holding means in a predetermined direction, cylindrical grinding means disposed at a position adjacent to a delivery passage for delivering said holding means, and means for rotating said cylindrical grinding means around its own axis and around an axis at right angles to its own axis. By virtue of the feature that the cylindrical grinding means is rotated around its central axis and around the axis rectangularly crossing the central axis, the top ends of flexible cords, such as bristles of toothbrushes, can be polished and ground from all the directions and very smooth and round outer ends can be obtained at high efficiency and high rate. This effect can be further enhanced when a plurality of such cylindrical grinding members are disposed so that rotation directions of every two adjacent cylindrical grinding means are reversed to each other.
摘要:
Half-ester compounds obtained by reacting polycarboxylic acid anhydrides with aliphatic tertiary amino alcohols have excellent latent characteristics as a curing catalyst for epoxy resins which are normally catalyzed by tertiary amines. When epoxy resin compositions containing the half-ester compounds are applied to semiconductor devices, remarkably small leakage currents of the devices are observed.
摘要:
A thermosetting resin composition having excellent flame resistance and thermal stability comprising an epoxy resin and a halogenated polyhydroxstyrene and a metal clad laminate comprising at least one planar base material having impregnated therein the above-described flame resistant thermosetting resin composition and at least one metal foil laminated thereon.