Abstract: The present invention relates to diamondoids and diamondoids derivatives as nucleating agents in the manufacture of thermoplastics. The use of diamondoids and diamondoid derivatives as nucleating agents can increase the overall rate of crystallization of thermoplastics and may lead to a reduction of cycle-time in molding processes and generally to increased output as well. Further, performance characteristics, such as, for example, clarity, stiffness, impact properties, hardness, and heat resistance, may be improved in thermoplastic articles formed from thermoplastics containing diamondoids as nucleating agents.

Abstract: There is provided a transparent or semitransparent resin composition which can be easily cut. The resin composition can be obtained by mixing a methacrylic resin with an ethylene·vinyl acetate copolymer resin, polybutene-1, polypropylene resin, ionomer and low-density polyethylene in a specific ratio.

Abstract: There is provided a transparent or semitransparent resin composition which can be easily cut.

Abstract: Plastic pencils comprising a writing core, a porous casing to enclose said writing core, and a coating which is coated on the surface of said porous casing, said casing being a homogeneous unitary mixture composed of 100 parts by weight of atactic polystyrene, 10-40 parts by weight of polyethylene, 10-55 parts by weight of glass fibers and the required amount of coloring agent and having sharpenability comparable to that of incense cedar and a flexural modulus in excess of 30,000 kg/cm.sup.2, and said coating being a homogeneous unitary mixture composed of 100 parts by weight of atactic polystyrene, 5-50 parts by weight of polyolefin and a required amount of a coloring agent.