Method for producing propylene polymer having a very high...

Details Method for producing propylene polymer having a very high... Method for producing propylene polymer having a very high...

2007-07-17

2007-07-17

Choi, Ling-Siu (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S351000, C526S124200, C526S124500, C402S021000, C402S021000, C402S021000, C402S021000, C402S021000

Reexamination Certificate

active

11157262

ABSTRACT:
The present invention relates to a method for producing a propylene polymer having a very high melt flowability, specifically to a method for producing an isotactic propylene polymer having a dramatically improved melt flowability with a relatively high production yield in convenient way, by improving the reactivity of hydrogen that is served as a molecular weight controlling agent in propylene polymerization.

REFERENCES:
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patent: 5652303 (1997-07-01), Ishimaru et al.
patent: 5693729 (1997-12-01), Fushimi et al.
patent: 6384160 (2002-05-01), Shamshoum et al.
patent: 2170803 (1990-07-01), None
patent: 03-033105 (1991-02-01), None
patent: 3033105 (1991-02-01), None
patent: 3033106 (1991-02-01), None

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