Ethylene polymer, process for preparing the same, solid titanium

Details Ethylene polymer, process for preparing the same, solid titanium Ethylene polymer, process for preparing the same, solid titanium

1997-04-09

1998-03-24

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502120, 5261256, 526153, 526138, 526352, C08F 1002, C08F 4654

Patent

active

057313938

ABSTRACT:
An ethylene polymer having small values of Mw/Mn and Mz/Mw, a small proportion of long-chain branches and a high swell ratio and a process for preparing the polymer are disclosed. A solid titanium catalyst component obtained by initially contacting a solid titanium composite containing titanium, magnesium, halogen and a compound having at least two ether linkages present through plural atoms with an organometallic compound and then contacting the resulting product with oxygen is further disclosed. An ethylene polymerization catalyst comprising the above catalyst component and an organometallic compound catalyst component is furthermore disclosed. The ethylene polymer is excellent in moldability, and from this polymer, a molded article which is excellent in rigidity and impact resistance and free from poor appearance can be obtained. By the use of the ethylene polymerization catalyst, an ethylene polymer having excellent properties as mentioned above can be obtained.

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patent: 5296565 (1994-03-01), Ueda et al.
patent: 5459217 (1995-10-01), Todo et al.
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