Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1977-07-15
1979-06-12
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, 526119, 526127, 526133, 526139, 526140, 526141, 526142, 526153, 526351, 526903, 526906, C08F 466, C08F 1006
Patent
active
041580885
ABSTRACT:
Polymerization of ethylene or .alpha.-olefins is carried out with use of a catalyst comprising a modified titanium component obtained by pulverizing the starting titanium component of Ziegler solid catalysts and subjecting the resultant to a modification treatment through contact with an inert organic solvent or a mixture thereof with a modifier, and an organoaluminum component.
The pulverized product of the starting titanium component is pulverized together with an organoaluminum compound and a small amount of ethylene or .alpha.-olefins thereby controlling the particle size distribution.
REFERENCES:
patent: 3004962 (1961-10-01), Matlack
patent: 3701763 (1972-10-01), Wada et al.
patent: 3850899 (1974-11-01), Wada et al.
Ito Akira
Iwao Tetsuya
Kono Masahiro
Sasaki Heizo
Mitsui Toatsu Chemicals Inc.
Smith Edward J.
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