Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-08-07
1980-05-06
Hamrock, William F.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260609E, 526173, 526176, 526181, 568635, C08F 448
Patent
active
042017297
ABSTRACT:
Highly desirable multifunctional lithium containing initiators are prepared by reacting a compound such as an organo lithium with an organic compound containing at least two 1,1-diphenylethylene groups. Such initiators can be prepared in the absence of polar solvents and are very desirable for the polymerization of dienes such as butadiene to a desirable 1,4 configuration. Several di-lithium compounds have been employed to initiate polymerization of various unsaturated organic monomers.
REFERENCES:
patent: 3725368 (1973-04-01), Morrison et al.
patent: 4020251 (1977-04-01), Hsiek
patent: 4067917 (1978-01-01), Sigwalt et al.
Paper by Tung et al., Aug. 1978, "Macromolecules-Dililithium Anionic Initiators".
Beyer Douglas E.
Lo Grace Y-S.
Rakshys Joseph W.
Tung Lu H.
Hamrock William F.
Ingraham R. B.
The Dow Chemical Company
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