Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1978-12-26
1980-09-02
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
252429B, 252429C, 526142, 526351, 526906, C08F 402, C08F 1006
Patent
active
042207452
ABSTRACT:
Stereospecific polymerization of .alpha.-olefins is carried out with use of a catalyst comprising an activated titanium component obtained by treating products of copulverization of magnesium halides and aromatic orthocarboxylic acid esters with titanium halides, an organoaluminum compound and an electron donative compound. .alpha.-Olefin polymers of high stereospecificity are thus obtained with a high polymerization activity.
REFERENCES:
patent: 3149098 (1964-09-01), Price et al.
patent: 4069169 (1978-01-01), Toyota et al.
patent: 4107414 (1978-08-01), Giannini et al.
Asanuma Tadashi
Ito Akira
Shiomura Tetsunosuke
Tanaka Takao
Mitsui Toatsu Chemicals Inc.
Nissen J. Harold
Smith Edward J.
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