Highly crystalline polypropylene

Details Highly crystalline polypropylene Highly crystalline polypropylene

C - Chemistry, Metallurgy

08

F

402/624

C08F 10/06 (2006.01) C08F 110/06 (2006.01) C08F 297/08 (2006.01) C08L 23/12 (2006.01)

Patent

CA 1300312

ABSTRACT OF THE DISCLOSURE A highly crystalline polypropylene (PP) from which highly stiff molded products can be produced and also which can be used for use applications for which con- ventional PP could not have been used is provided, which PP is characterized by the following conditions (A) and (B): (A) its melt flow rate (MFR) and absorbance ratio according to the method of infrared absorption spectra (IR-?; an absorvance ratio of a wave-number of infrared rays of 997 cm-1 to that of 973 cm-1) satisfy an equation of IR-? ? 0.0203 log MFR + 0.950 and its MFR is in the range of 0.1 to 200; and (B) when a dilute solution of the PP dissolved in xylene is slowly cooled with stirring, an initially deposited component in 2 to 3% by weight has an IR-? value of 0.97 or more and the weight average M.W. (MW1) of the deposited components and that (MWO) of the PP have a ratio of 3 or more.

556716

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