Process for preparing a multilithio initiator for improved tire

Details Process for preparing a multilithio initiator for improved tire Process for preparing a multilithio initiator for improved tire

1995-03-16

1997-01-21

Teskin, Fred

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502157, 526174, 526175, 526180, 526337, 526340, 260665R, C08F 448

Patent

active

055959512

ABSTRACT:
The subject invention discloses a process for preparing an initiator which contains a plurality of lithium atoms and which is particularly useful for initiating the polymerization of diolefin monomers into rubbery polymers; said process being comprised of reacting an alkyl lithium compound with an unsaturated hydrocarbon containing allylic, benzylic or aryl hydrogen atoms, wherein said process is conducted in the presence of a member selected from the group consisting of alkali metal alkoxides, alkali metal phenoxides, and chelating tertiary alkyl 1,2-ethylene diamines. After the initiators of this invention have been prepared they can be employed to initiate the polymerization of diolefin monomers into rubbery polymers. They can, of course, also be employed to initiate the copolymerization of diolefin monomers and vinyl aromatic monomers into rubbery polymers. These rubbery polymers can then be used in making tire tread compounds for automobiles and trucks. They offer the advantages of better processability, treadwear characteristics, and abrasion resistance.

REFERENCES:
patent: 3215679 (1965-11-01), Trepka
patent: 3321479 (1967-05-01), Eberhardt et al.
patent: 3674895 (1972-07-01), Gaeth et al.
patent: 3776893 (1973-12-01), Naylor et al.
patent: 3781260 (1973-12-01), Halasa
patent: 3925511 (1975-12-01), Loveless
patent: 4078019 (1978-03-01), Langer, Jr.
The Merck Index (9th ed.) pp. 1133-1134 (1976).

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