Preparation of aromatic polyketones using a strong acid catalyst

Details Preparation of aromatic polyketones using a strong acid catalyst Preparation of aromatic polyketones using a strong acid catalyst

1987-04-09

1989-04-11

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528173, 528207, 528271, C08G 6700, C08G 7523

Patent

active

048207926

ABSTRACT:
Polyaryletherketones are synthesized by Friedel-Crafts chemistry using a catalytic quantity of a strong acid (e.g. trifluoromethanesulphonic acid) in a solvent of lower acidity preferably comprising a second acid of strength at least equal to chloroacetic acid. Suitable second acids can be recovered for reuse, and only a small (catalytic) amount of the expensive strong acid is required.

REFERENCES:
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patent: 3666612 (1972-05-01), Angelo
patent: 3953400 (1976-04-01), Dahl
patent: 4361693 (1982-11-01), Jansons
patent: 4396755 (1983-08-01), Rose
patent: 4398020 (1983-08-01), Rose
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patent: 4709007 (1987-11-01), Jansons et al.
Makromol. Chem., Rapid Commun. 5, 833-836 (1985) Ueda et al.
Polym. Bull. 14, 367 (1985) Shaffer et al.

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