摘要:
A process for producing a modified propylene polymer comprising the steps of premixing a propylene polymer with a vinyl monomer and polymerizing the vinyl monomer by kneading the premix at a temperature of a melting point thereof or higher is described, wherein the propylene polymer is a particulate propylene polymer having a specific surface area of 0.1 m.sup.2 /g or more. A modified propylene polymer composition is also described, obtained by mixing (a) a particulate propylene polymer having a specific surface area of 0.1 m.sup.2 /g or more, (b) 5% by weight or more of a vinyl monomer mainly comprising an aromatic vinyl monomer based on the total weight of the vinyl monomer and the propylene polymer, and (c) a radical polymerization initiator, substantially impregnating the vinyl monomer and the radical polymerization initiator into the propylene polymer, and then polymerizing the vinyl monomer by melt-kneading.
摘要:
A beverage cooler box is provided which is intended to receive ice or other cooling means to keep containers packaged therein cool. The box is made of a material which is impervious to liquid which may be contained within the box during use. The box includes folding end panels which extend continuously between adjacent front and rear panels; therefore, there are no seams or breaks in the material around the lower portion of the box which might degrade the ability of the box to hold a liquid. Also disclosed is a method of assembling the cooler box.