Process for the preparation of copolymers based on carbon monoxi

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...

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528392, 524701, 524706, 524710, 524711, 524712, 524714, 524765, 524786, 502162, 502165, 502167, 502169, C08G 6702, B01J 3118

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057170606

ABSTRACT:
An improved process is described for the preparation of alternating linear copolymers based on carbon monoxide and at least one compound containing an alkenyl unsaturation which comprises reacting in a liquid solvent under the operating conditions, a mixture of carbon monoxide and one or more compounds containing an alkenyl unsaturation in the presence of:
(i) a catalyst having general formula (I)
wherein chel and chel' the same or different, represent a nitrogenated or phosphorated bidentate chelating agent, and A.sup.- represents an essentially non-coordinating, non esterifiable and non labile anion of an acid with pKa less than 2; and
(ii) a cocatalyst having general formula (II)
wherein A'.sup.-, the same as or different from A.sup.-, has the same meaning defined above and chel" represents a nitrogenated bidentate chelating agent the same as or different from chel and chel'.

REFERENCES:
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patent: 5314856 (1994-05-01), Sommazzi et al.
patent: 5324701 (1994-06-01), Sommazzi et al.
patent: 5346873 (1994-09-01), Sommazzi et al.
patent: 5369073 (1994-11-01), Sommazzi et al.
patent: 5408030 (1995-04-01), Sommazzi et al.
patent: 5556823 (1996-09-01), Sommazzi et al.

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