Preparation of high cis-1,4-polypentadiene

Details Preparation of high cis-1,4-polypentadiene Preparation of high cis-1,4-polypentadiene

C - Chemistry, Metallurgy

08

F

402/425, 402/440

C08F 136/04 (2006.01) C08F 4/62 (2006.01) C08F 36/04 (2006.01)

Patent

CA 1131848

PREPARATION OF HIGH CIS-1,4 POLYPENTADIENE Abstract of the Disclosure There is disclosed a method for the preparation of very high cis-1,4-polypentadiene which comprises poly- merizing cis-1,3-pentadiene, also known as cis-piperylene, with a ternary catalyst system comprising (A) a soluble chromium compound such as chromium salts of organic acids, organic complex compounds of chromium containing triden- tate organic ligands, and .pi.-bonded organochromium compounds, (B) an organometallic, such as trialkylaluminums, dialkylmagnesiums or dialkylzincs, and (C) dialkyl hydrogen phosphites.

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