| 摘要 |
<p>Method of incorporation a talcum powder into a material, in particular a thermoplastic material. The method consists in (a) mixing the talcum powder with water and a polyethylene glycol, a polypropylene glycol or a copolymer of these compounds, (b) pressing the mixture through dies and sectioning it to obtain granules of an average size exceeding that of the grains of the initial powder, (c) incorporating in the material the product obtained, (d) subjecting the dispersion to mechanical action to break up the granules and to release and distribute in the mass the grains of the initial powder. The invention is characterized by incorporating small particle-sized talcum powders into materials, especially thermoplastic materials, without the practical problem involved in incorporating small particle-sized powders.</p> |
