Method for isolating low molecular weight polymer

Details Method for isolating low molecular weight polymer Method for isolating low molecular weight polymer

1977-07-13

1979-03-06

Davis, C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

208188, 260680B, 26068315R, 528491, C07C 710

Patent

active

041430859

ABSTRACT:
A method for isolating a low molecular weight polymer from a solution of a low molecular weight polymer having a viscosity of 5 to 100,000 cps at 30.degree. C. and an inactivated catalyst in a hydrophobic organic solvent, which comprises mixing an acidic, alkaline or neutral water or a mixture of the water and a water-soluble organic solvent with the solution containing the low molecular weight polymer in the presence of an amphoteric, cationic or nonionic surfactant or a nonionic or cationic high molecular weight flocculating agent, whereby the separation of the organic layer and the aqueous layer is significantly improved.

REFERENCES:
patent: 3000871 (1961-09-01), Engel
patent: 3284429 (1966-11-01), Hofheim et al.
patent: 3326805 (1967-06-01), Murzyama et al.
patent: 3448160 (1969-06-01), Schleimer
patent: 3547855 (1970-12-01), Loveless
patent: 3583967 (1971-06-01), Hattori et al.
patent: 4022839 (1977-05-01), Beuther et al.
Chem. & Engr. News, Feb. 21, 1977, p. 25.

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