| abstract |
The present invention relates to a process for producing DVD's using injection molding techniques, without the use of compression, from a polymer having a glass transition temperature (Tg) of greater than 110° C. as measured by Differential Scanning Calorimetry (DSC) at 10° C./min., an elastic modulus (G′) of less than or equal to 1000 dynes/cm 2 at a temperature of 240° C., as measured by Dynamic Mechanical Spectroscopy measurements at a temperature ramp rate of 3° C./min., and a shear rate of 1 radian/sec using a parallel plate geometry (under nitrogen), and a complex viscosity (Eta*) of less than 2000 poise, as measured according to Dynamic Mechanical Spectroscopy measurements, using shear rate sweeps at 280° C., and a shear rate of 1 radian/sec using a parallel plate geometry (under nitrogen). |