| 摘要 |
The present invention relates generally to the field of articles of manufacture in the form of a shaped article comprising a blend of polymers wherein all, or some of, one or more surfaces of the shaped article is coated with a covering material, wherein the covering material has a different composition than the shaped article, and, wherein the shaped article comprises either: a) an immiscible blend of polymers having more than one glass transition temperature and one of the polymers has a glass transition temperature greater than 180° Celsius; b) a miscible blend of polymers having a single glass transition temperature greater than 217° Celsius; or, c) a single virgin polymer having a glass transition temperature of greater than 247° Celsius. The present invention is also directed to light source reflectors comprising a polymer according to a), b) or c) above.
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