Process for preparing polyketones

Details Process for preparing polyketones Process for preparing polyketones

C - Chemistry, Metallurgy

08

G

402/7.1

C08G 67/02 (2006.01)

Patent

CA 2013305

Case 7178(2) ABSTRACT OF THE DISCLOSURE PROCESS FOR PREPARING POLYKETONES An improved process for preparing linear interpolymers of olefin(s) (eg ethylene) and carbon monoxide (Polyketones) is provided. The process comprises polymerising the olefin(s) with carbon monoxide in the presence of a palladuim catalyst derived from a palladuim source, a bidentate amine, phosphine, arsine or stibine of formula (R1)2M -R2 -M(R1)2 where the M atoms are selected from N, P, As or Sb, the R1 groups are eg C1 to C4 alkyl or phenyl and R2 is eg -(CH2)-a where a - 2 to 10, and a anion prepared by reacting in a 2:1 molar ratio and substituted salicylic acid and boric acid. The salicylic acid is preferably 4- or 5- substituted with methyl, C1 or Br. Using this particular palladuim catalyst leads to high polymer yields than eg when unsubstituted salicylic acid is employed.

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