Polydiene polyalkylene oxide block copolymers and their use as a

Details Polydiene polyalkylene oxide block copolymers and their use as a Polydiene polyalkylene oxide block copolymers and their use as a

1980-03-28

1981-07-21

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 336R, 260 336UA, 525385, 525334, C08L 5300, C08K 501, C08K 505

Patent

active

042797985

ABSTRACT:
A block copolymer of polyalkalene oxide and a polydiene is made by the lithium catalyzed anionic polymerization of a diene followed by polymerization of an alkalene oxide using a double metal cyanide catalyst. The dispersant can be used in forming a crude oil methanol dispersion for transport through unheated pipelines from the North Slope oil fields to Prudhoe Bay.

REFERENCES:
patent: 3278459 (1966-10-01), Herold
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patent: 3867295 (1975-02-01), Schwab et al.
patent: 3954915 (1976-05-01), Schwab et al.
patent: 4039593 (1977-08-01), Kamienski et al.
patent: 4083895 (1978-04-01), Nnadi et al.

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