Birch, Stewart, Kolasch & Birch, LLP
Resin composition
 Disclosed is a resin composition comprising (.alpha.) at least one polymer selected from the group consisting of a non-modified cyclic monomer unit-containing polymer and a modified cyclic monomer unit-containing polymer having a number average molecular weight of from 10,000 to 5,000,000, wherein the cyclic monomer unit is derived from a cyclic conjugated diene, and (.beta.) at least one polymer other than the polymer (.alpha.), and wherein the polymer (.alpha.) is present in an amount of at least 1% by weight, based on the total weight of the polymers (.alpha.) and (.beta.). The molecular structure of the polymer (.alpha.) which is contained in the novel resin composition of the present invention and which is selected from a non-modified cyclic monomer unit-containing polymer and a modified cyclic monomer unit-containing polymer, wherein the cyclic monomer unit is derived from a cyclic conjugated diene, can be controlled with large freedom. Therefore by combining the polymer (.alpha.) with a polymer (.beta.) other than the polymer (.alpha.), a resin composition which is excellent in various properties, such as theremal stability with respect to rigidity, and impact resistance can be provided with large freedom with respect to the choice of its properties. 
Asahi Kasei Kogyo Kabushiki Kaisha
C C C C C
C08F C08F C08L C08F C08F
inventional inventional inventional inventional inventional
Kimio Kiyoo Itaru
Imaizumi Kato Natori