Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By condensation of entire cyclic molecules or entire...
Patent
1984-11-05
1987-12-15
Doll, John
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By condensation of entire cyclic molecules or entire...
526 64, 526 65, 526 68, 526 69, 585255, 585301, 585328, 585516, 585517, 585521, 585508, C07C 200
Patent
active
047134240
ABSTRACT:
A continuous, liquid phase method for producing a polymer having a predetermined number of conjugated diene units per molecule in which (a) a first monomer stream is contacted with an organo-lithium compound, in a manner to intimately mix increments of monomer, containing the predetermined number of moles of conjugated diene, with each mole of organo-lithium and continuously mix and move the mixture through a first, elongated reaction zone to react the predetermined number of moles of conjugated diene with one mole of organo-lithium, (b) mixing the effluent from (a) with an alkyl-substituted aromatic hydrocarbon, an organo-alkali metal of potassium, rubidium or cesium and a tertiary amine to form a complex-initiator of the aromatic hydrocarbon, the alkali metal and the amine, (c) mixing the effluent from (b) with a second stream of monomer, in a manner to intimately mix increments of monomer, containing the predetermined number of moles of conjugated diene, with each mole of complex-initiator and continuously mix and move the mixture through a second, elongated reaction zone and (d) mixing the effluent of (c) to produce to form a polymer comprising the predetermined number of conjugated diene units and the aromatic hydrocarbon. Preferably, a portion of the effluent from (d), containing complex-initiator, is cooled and recycled to (c) to cool the reaction and supply complex-initiator.
REFERENCES:
patent: 2734928 (1956-02-01), Smolin
patent: 3093695 (1963-06-01), Eidt
patent: 3356754 (1967-12-01), Wofford
patent: 3360580 (1967-12-01), Mertzweller et al.
patent: 3668263 (1972-06-01), Morrison et al.
patent: 4331823 (1982-05-01), Wieder et al.
Doll John
Pal A.
Phillips Petroleum Company
Steininger Charles F.
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