Abstract: The invention relates to a thermoplastic moulded part comprising at least a polyolefin or a polycondensation polymer and reinforcing fibers, characterized in that 1 to 60 wt. % of the moulded part consists of reinforcing fibers with a length of between 0.8 and 15 mm, at least a portion of which is present partly in the center and partly in the non-porous dish surface, and that the moulded part has a porosity of between 5 and 95 vol. %. The invention also relates to a process for producing such a moulded part.

Abstract: The invention relates to a thermoplastic molded part comprising at least a polyolefin or a polycondensation polymer and reinforcing fibers, characterized in that 1 to 60 wt. % of the molded part consists of reinforcing fibers with a length of between 0.8 and 15 mm, at least a portion of which is present partly in the center and partly in the non-porous dish surface, and that the molded part has a porosity of between 5 and 95 vol. %.

Abstract: The invention relates to a thermoplastic molded part comprising at least a polyolefin or a polycondensation polymer and reinforcing fibers, characterized in that 1 to 60 wt. % of the molded part consists of reinforcing fibers with a length of between 0.8 and 15 mm, at least a portion of which is present partly in the center and partly in the non-porous dish surface, and that the molded part has a porosity of between 5 and 95 vol. %. The invention also relates to a process for producing such a molded part.

Abstract: Process and intermediate for preparing an intrinsically foamed thermoplastic polymer comprising a vinyl monomer and maleic acid and/or maleic anhydride, in which process a polymer composition comprising:a) a core polymer based ona.1) 12-50 moles % maleic acid and/or maleic anhydridea.2) a vinyl monomer, anda.3) optionally a third monomer, where the sum total of a1+a2+a3 is 100 moles % and the weight average molecular weight of the core polymer is 50000-500000, andb) optionally a nucleating agent, is introduced into equipment suited for making foam, in which process the core polymer, and optionally the nucleating agent, are brought to a temperature which is high enough to release CO.sub.2 from the core polymer, and in which process the polymer melt is expanded to form a polymer foam with the desired density. The core polymer is preferably a polymer of styrene and maleic anhydride.

Abstract: A process for the preparation of a multilayer plastic container in which an inner and an outer layer, one of which is in the melt phase, are introduced into an opened mold. Before the mold is closed, the inner layer is inflated by a pressurized medium until the facing surfaces of the inner and outer layers are in contact over almost all their respective surface areas. The mold is then closed and the first and second layers are forced against the mold wall by a pressurized medium.