Patent ID: 7569651

Claim:
A random propylene-ethylene copolymer having an ethylene content of from 0.01 to 50% by weight, a molar mass M w (measured using gel permeation chromatography) in the range from 307 000 to 699 000 g/mol, an M w /M n (measured using gel permeation chromatography) in the range from 1.8 to 4.0, a ratio of the intensities of the signal for C 1 to the sum of the intensities of the signals for C 15 and C 16 (in each case determined from the 13C-NMR spectrum of the random copolymer of the present invention) of more than 100, a ratio of the intensities of the signal for C 7 to the sum of the intensities of the signals for C 9 and C 10 (in each case determined from the 13C-NMR spectrum of the random copolymer of the present invention) of more than 0.1, and a Charpy impact toughness measured in accordance with ISO 179-2/1eU of more than 200 kJ/m 2 at 23° C., and of more than 20 kJ/m 2 at −20° C.