Non-aqueous dispersion polymerization of conjugated diolefins

Details Non-aqueous dispersion polymerization of conjugated diolefins Non-aqueous dispersion polymerization of conjugated diolefins

1976-06-24

1978-07-04

De Benedictis, Sr., Thomas

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260876B, 260887, 260894, 526159, 526335, 5263404, C08F 208, C08F 212

Patent

active

040989801

ABSTRACT:
A process for the non-aqueous dispersion polymerization of a conjugated diolefin monomer, for instance, butadiene or isoprene, in a liquid hydrocarbon dispersion medium, for instance, n-butane or n-pentane with a Ziegler Natta catalyst, for instance, triisobutylaluminum/titanium tetrachloride while said conjugated diolefin is in the presence of a block copolymer dispersion stabilizer. The block copolymer dispersion stabilizer is a copolymer which contains at least two blocks of polymer linked by chemical valences, at least one block (A block) is soluble in liquid organic dispersion medium and at least another block (B block) is insoluble in the dispersion medium and the stabilizer acts to disperse polymers of conjugated diolefins which are formed in the stabilizer's presence. The A block is exemplified by polyisoprene, poly(t-butyl styrene) and poly(vinyl toluene). The B block is exemplified by polystyrene, poly(.alpha.-methyl styrene), a copolymer of styrene and isoprene, poly(methyl methacrylate) and the like.

REFERENCES:
patent: 3218302 (1965-11-01), Melamed
patent: 3243419 (1966-03-01), Ingram
patent: 3382297 (1968-05-01), Thompson
patent: 3400113 (1968-09-01), Winter et al.
patent: 3462406 (1969-08-01), Natta et al.
patent: 3499059 (1970-03-01), Molan et al.
patent: 3577395 (1971-05-01), Lal et al.
patent: 3644585 (1972-02-01), Takayanagi et al.
patent: 3707585 (1972-12-01), Okamoto et al.
patent: 3728325 (1973-04-01), Carlson et al.
patent: 3742091 (1973-06-01), Moberly et al.
patent: 3770712 (1973-11-01), Schwab
patent: 3770712 (1973-11-01), Schwab
patent: 3888945 (1975-06-01), Arndt et al.
patent: 3906057 (1975-09-01), Durst
patent: 3954909 (1976-05-01), Havas et al.
Odian, Principles of Polymerization (McGraw-Hill, 1970), pp. 593-596.

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