Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-08-07
1980-04-01
Hamrock, William F.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260609E, 526173, 526181, 568635, C08F 448
Patent
active
041961536
ABSTRACT:
Very desirable polyfunctional lithium containing polymerization initiators are prepared by reacting an adduct of an organo lithium compound and styrene with an organic compound containing at least two 1,1-diphenylethylene groups in the proportion of about two moles of the adduct to one mole of the organic compound. A difunctional lithium initiator is prepared thereby. The difunctional initiator may be reacted with styrene and subsequently an additional quantity of the diphenylethylene compound which in turn is reacted with the styrene-organo lithium adduct to form a trifunctional initiator. The process can be repeated to obtain an initiator having any desired degree of lithium functionality. 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 and preparation of block copolymers.
REFERENCES:
patent: 3644322 (1972-02-01), Farrar
patent: 3734973 (1973-05-01), Farrar
patent: 3763126 (1973-10-01), Farrar
patent: 3776964 (1973-12-01), Morrison et al.
patent: 3787510 (1974-01-01), Farrar
patent: 4020251 (1977-04-01), Hsich
patent: 4067917 (1978-01-01), Sigwalt et al.
Lo Grace Y-S
Tung Lu H.
Hamrock William F.
Ingraham R. B.
The Dow Chemical Company
LandOfFree
Polyfunctional lithium containing initiator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyfunctional lithium containing initiator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyfunctional lithium containing initiator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1313692