Solution polymerization with molecular sieve purification of rec

Details Solution polymerization with molecular sieve purification of rec Solution polymerization with molecular sieve purification of rec

1979-10-04

1981-02-10

Levin, Stanford M.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526 70, 528482, C08F 206

Patent

active

042502705

ABSTRACT:
In the solution polymerization process wherein monomers comprising at least one conjugated diene are polymerized followed by coupling with a polyfunctional coupling agent which results in some alkyl chloride formation and solvent recovered from said polymerization is used in a subsequent solution polymerization process, the improvement comprising contacting said solvent with a molecular sieve to remove alkyl chloride therefrom before said solvent is used in said subsequent polymerization.

REFERENCES:
patent: 3078254 (1963-02-01), Zelinski et al.
patent: 3281383 (1966-10-01), Zelinski et al.
patent: 3383430 (1968-05-01), Hutson, Jr. et al.
patent: 3393182 (1968-07-01), Trepka
patent: 3402996 (1968-09-01), Maher et al.
patent: 3639517 (1972-02-01), Kitchen et al.
patent: 3639521 (1972-02-01), Hsieh
patent: 3725377 (1973-04-01), Cottle
patent: 3862900 (1975-01-01), Reusser
patent: 4086298 (1978-04-01), Fahbach et al.
Advances in Petroleum Chemistry and Refining, 4, pp. 115, 116, 161 (1961).

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