Method for producing novel rubbery polymers from diene monomers

Details Method for producing novel rubbery polymers from diene monomers Method for producing novel rubbery polymers from diene monomers

1974-01-15

1976-09-14

Henderson, Jr., Christopher A.

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

Synthetic resins

Removing and recycling removed material from an ongoing...

260880B, 260887, 526 70, 526173, 526340, C08D 120, C08D 308

Patent

active

039806251

ABSTRACT:
Novel rubbery polymer having a uniform and broad molecular weight distribution, a ratio of weight average molecular weight to number average molecular weight of 3 or more, a content of monovinyl aromatic compound of 0 to 30% by weight, a bonding manner of conjugated diolefin of 60% or more of 1,4-linkage and improved processability and physical properties can be obtained by circulating living polymer in the polymerization or copolymerization of conjugated diolefins or copolymerization of conjugated diolefin and monovinyl aromatic hydrocarbon carried out with a lithium-based catalyst.

REFERENCES:
patent: 3278644 (1966-10-01), Zelinski
patent: 3284430 (1966-11-01), Forman
patent: 3361730 (1968-01-01), Naylor
patent: 3363659 (1968-01-01), Keckler
patent: 3438952 (1969-04-01), Christensen
patent: 3510467 (1970-05-01), Azoulay
patent: 3736312 (1973-05-01), Halasa

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