Thermoplastic materials and article made therefrom
AssigneeNippon Zeon Co., Ltd.
InventorsNobukazu Takahashi, Teiji Kohara, Tadao Natsuume
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Abstract
The present invention provides a thermoplastic composition excellent in heat resistance and water resistance which includes a thermoplastic saturated norbornene polymer which has a number-average molecular weight (Mn) of 50,000-500,000 and a weight-average molecular weight (Mw) of 100,000-2,000,000 which are measured by high performance liquid chromatography, and a molecular weight distribution (Mw/Mn) of 2.2 or more, and a volatile content of at most 0.3% by weight higher. The composition is suitable for optical materials, electroconductive composite materials and optical recording media.
Claims18
A thermoplastic composition comprising a thermoplastic saturated norbornene polymer having a number-average molecular weight (Mn) of 50,000 to 500,000 and a weight-average molecular weight (Mw) of 100,000 to 2,000,000 which are measured by high performance liquid chromatography, and a molecular weight distribution (Mw/Mn) of at least 2.2, and a maximum volatile content of 0.3% by weight, which contains an antioxidant having a maximum vapor pressure of 10.sup.-6 Pa at 20.degree. C. in an amount of 0.01-5 parts by weight based on 100 parts by weight of the thermoplastic saturated norbornene polymer.
Dependencies are inferred from the claim text.