Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...
Patent
1990-03-22
1993-02-16
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymer of an ethylenically unsaturated reactant with a...
C08G 6702
Patent
active
051872587
ABSTRACT:
An improved process for preparing linear interpolymers of olefin(s) (e.g. ethylene) and carbon monoxide (Polyketones) is provided. The process comprises polymerizing the olefin(s) with carbon monoxide in the presence of a palladium catalyst derived from a palladium source, a bidentate amine, phosphine, arsine or stibine of formula (R.sup.1).sub.2 M--R.sup.2 --M(R.sup.1).sub.2 where the M atoms are selected from N, P, As or Sb, the R.sup.1 groups are e.g. C.sub.1 to C.sub.4 alkyl or phenyl and R.sup.2 is e.g. (CH.sub.2).sub.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, Cl or Br. Using this particular palladium catalyst leads to high polymer yields than e.g. when unsubstituted salicylic acid is employed.
REFERENCES:
patent: 4788279 (1988-11-01), Drent
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patent: 4925918 (1990-05-01), Brown et al.
patent: 5034507 (1991-07-01), Smith
Anderson Harold D.
The British Petroleum Company p.l.c.
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