Multifunctional lithium containing initiator

Details Multifunctional lithium containing initiator Multifunctional lithium containing initiator

1977-12-12

1980-04-29

Hamrock, William F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260609E, 526176, 526181, 568635, C08F 448

Patent

active

042007186

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), Hsieh
patent: 4067917 (1978-01-01), Sigwalt et al.
Paper by Tung et al., to appear Aug., 1978, in "Macromolecules", Dilithium Anionic Initiatiors Based on Double 1,1-Diphenylethylene Compounds.

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