Polydiene poly alkylene oxide block copolymers and their use...

Details Polydiene poly alkylene oxide block copolymers and their use... Polydiene poly alkylene oxide block copolymers and their use...

C - Chemistry, Metallurgy

08

K

134/45

C08K 5/01 (2006.01) C08G 65/08 (2006.01) C08L 53/00 (2006.01)

Patent

CA 1197435

ABSTRACT OF THE DISCLOSURE A block copolymer of polyalkylene oxide and a polydiene is made by the lithium catalyzed anionic polymerization of a diene followed by polymerization of an alkylene 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.

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