Atactic copolymers of propylene with ethylene

Details Atactic copolymers of propylene with ethylene Atactic copolymers of propylene with ethylene

1996-03-01

2000-08-29

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5261251, 526158, 526160, 526170, 502104, C08F21006

Patent

active

061110469

ABSTRACT:
Amorphous polymers of propylene modified with ethylene units are prepared in high yields, by carrying out the polymerization reaction in the presence of a catalyst based on a metallocene compound that has two bridged fluorenyl ligands. These copolymers have glass transition temperatures (T.sub.g) well below 0.degree. C., making it possible for the products manufactured from them to be used at low temperatures.

REFERENCES:
patent: 4859757 (1989-08-01), Pellon et al.
patent: 5369196 (1994-11-01), Matsumoto et al.
patent: 5637665 (1997-06-01), Sustic et al.

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