Process for preparing a copolymer

Details Process for preparing a copolymer Process for preparing a copolymer

1980-02-20

1982-03-30

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429C, 526125, 526151, 5263483, 5263484, 5263486, C08F 402, C08F 1000

Patent

active

043225144

ABSTRACT:
According to this invention, there is provided a process for preparing a non- or low-crystalline soft copolymer, characterized in that 50 to 98 mole % of propylene, 0.2 to 30 mole % of ethylene and 0.2 to 45 mole % of a straight-chained .alpha.-olefin having not less than four carbon atoms are copolymerized using a catalyst, said catalyst comprising (1) a solid substance containing magnesium and titanium and (2) an organometallic compound.

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patent: 3789036 (1974-01-01), Longi et al.
patent: 3900454 (1975-08-01), Sato et al.
patent: 3917575 (1975-11-01), Matsuura
patent: 4056668 (1977-11-01), Berger et al.
patent: 4065611 (1977-12-01), Miyoshi et al.
patent: 4093789 (1978-06-01), Kuroda et al.
patent: 4107415 (1978-08-01), Giannini et al.
patent: 4113654 (1978-09-01), Mayr et al.
patent: 4154915 (1979-05-01), Matsuura et al.
patent: 4168361 (1979-09-01), Oda et al.

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