Abstract: A method of the invention can produce a fiber-reinforced thermoplastic resin foamed product having less unevenness in a thickness of a surface layer and excellent mechanical strength. In the method, a fiber-reinforced thermoplastic resin sheet is continuously shaped into a hollow member, and a foaming resin composition containing a thermoplastic resin and a foaming agent is supplied into an interior of the obtained hollow member. The foaming agent is foamed so that the hollow member is shaped into a desired form by the foaming pressure.

Abstract: A liquid coolant composition with improved anti-corrosive property contains 85-99 weight % of an agent for lowering the melting point selected from the group consisting of alcohols and glycol, and 1-15 weight % of a rust preventive composition. The rust preventive composition contains 0.00005-0.02 weight % at elemental metal concentration of calcium compounds or a mixture of 0.00005-0.02 weight % each of calcium and magnesium compounds, and at least one kind of rust preventive selected from the group consisting of phosphates, borates, nitrates, molybdates, benzoates, silicates, triazoles, thiazoles, sebacic acid and octylic acid. Still better results are obtained if 0.001-0.02 weight % of at least one kind of polyphosphoric or polycarboxylic acids is additionally contained.

Abstract: A hollow granular percarbonate is disclosed wherein the granules are hollow and the shell thereof is made of a crystalline percarbonate, along with a process for the preparation thereof.