Method for preparing syndiotactic polypropylene

Details Method for preparing syndiotactic polypropylene Method for preparing syndiotactic polypropylene

1994-07-08

1995-06-27

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526131, 526134, 526351, 526903, C08F 4642, C08F 1006

Patent

active

054281210

ABSTRACT:
A method for preparing a propylene (co)polymer having a substantially high syndiotactic structure and a desired molecular weight which comprises the step of (co)polymerizing propylene or propylene and a small amount of another olefin by the use of a transition metal compound catalyst having asymmetric ligands in the presence of a specific internal olefin.

REFERENCES:
patent: 4892851 (1990-01-01), Ewen et al.
patent: 5003019 (1991-03-01), Ishimaru et al.
patent: 5026798 (1991-06-01), Canich
patent: 5241025 (1993-08-01), Hlatky et al.

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