Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1982-02-16
1983-11-15
Levin, Stanford M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
428215, 526124, 526125, 526141, 526142, 526144, 526916, C08F21006
Patent
active
044157185
ABSTRACT:
Using a catalyst comprising (1) a solid substance which contains magnesium and titanium, (2) an organometallic compound and (3) an electron donor, there are polymerized ethylene, propylene and 1-butene to obtain a soft or semi-hard terpolymer of low crystallinity containing 75.2 to 91.5 mol % propylene, 7.5 to 14.9 mol % ethylene and 1.0 to 9.9 mol % 1-butene.
REFERENCES:
patent: 3959409 (1976-05-01), Frese et al.
patent: 4109071 (1978-08-01), Berger et al.
patent: 4115319 (1978-09-01), Scata et al.
patent: 4120820 (1978-10-01), Birkelbach
patent: 4223117 (1980-09-01), Sano et al.
patent: 4322514 (1982-03-01), Miyoshi et al.
Translated Abstract of Japanese No. 104687, (1978), No. 791975, (1976).
Matsuura Kazuo
Miyoshi Mituji
Tajima Yoshio
Levin Stanford M.
Nippon Oil Company Ltd.
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