Abstract:
A method of manufacturing olefin resin particles, comprising the steps of extruding by using a homodirectional biaxal kneading extruder a resin from a die nozzle having a discharge rate per hole of 0.5-8 kg/hr and a diameter of less than 2 mm into warm water of 5-90 DEG C which is lower than the temperature of the resin by 140-220 DEG C, and then cutting the extruded product with a cutter blade in the warm water. The mixed materials are dispersed uniformly, and the changing of a raw resin is carried out speedily and economically, resin particles of a desired shape being obtained.
Abstract:
A composition for relieving skin irritation comprising 1 to 50 wt % of trialkyl citrate, 1 to 70 wt % of a lower alcohol and 1 to 90 wt % of water, and an external preparation for percutaneous administration comprising the above composition and further containing 0.001 to 20 wt % of a pharmacologically active substance, both of which can lower and relieve skin irritation and promote the absorption of the pharmacologically active substance.
Abstract:
A percutaneous administration and absorption promoter composition which can remarkably promote the percutaneous absorption of pharmacologically active substances, characterized by containing a hydrophobic substance, water and a lower alcohol. An external preparation for percutaneous administration which permits pharmacologically active substances to be percutaneously administered efficiently to thereby attain a therapeutic effect, characterized by containing a pharmacologically active substance, a hydrophobic substance, water and a lower alcohol.