Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1982-07-15
1984-05-01
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526114, 526122, 526119, 526125, 526339, 5263486, 526352, 502154, C08F 402, C08F 1000
Patent
active
044462891
ABSTRACT:
A novel process is disclosed for polymerizing and copolymerizing alpha olefins (ethylene included) also in the presence of conjugated diolephins, and more particularly for copolymerizing ethylene with 1,3-butadiene, based on the use of a plural-component catalyst system, one of said components being a novel complex which contains titanium and magnesium. The process gives, in yields higher than 200,000 grams of polymer per g of elemental Ti, ethylene-butadiene copolymers having a distribution of monomeric units characterized by a particular novel .sup.13 C-NMR spectrum, a high apparent specific gravity and such a grit size as to impart flowability to the dry product, and a distribution in the presence of sulphur and accelerators such as to acquire a gel content (fraction insoluble in boiling xylenes) over 50%.
REFERENCES:
patent: 3859231 (1975-01-01), Kochhar et al.
patent: 4194992 (1980-03-01), Corbellini et al.
patent: 4342855 (1982-08-01), Akimoto et al.
Carbonaro Antonio
Corbellini Margherita
Ferrero Cesare
Agip Petroli S.p.A.
Smith Edward J.
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