Polyarylene ethers containing xanthone units, a process for thei

Details Polyarylene ethers containing xanthone units, a process for thei Polyarylene ethers containing xanthone units, a process for thei

1993-05-26

1995-03-07

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528126, 528128, 528174, 528220, C08G 802, C08G 1400

Patent

active

053959140

ABSTRACT:
Polyarylene ethers that contain xanthone units and have a very high heat resistance can be prepared from inexpensive, readily accessible monomers by polycondensation in a basic medium under essentially anhydrous conditions in the presence or absence of an aromatic solvent at temperatures of from 150.degree. to 400.degree. C. Xanthone monomers and also hydroxyhalogen-substituted benzophenone compounds may be used as starting materials.

REFERENCES:
patent: 3546167 (1970-12-01), Darms
patent: 3763103 (1973-10-01), Newton et al.
patent: 3985783 (1976-10-01), Johnson et al.
Derwent Abstract, AN 85-132632 of JP 60 071 636 (Sep. 20, 1985).
Derwent Abstract, AN 85-132631 of JP 60 071 635 (Apr. 23, 1986).
Chemical Abstracts, vol. 77, No. 27, "Reactions induced by pyridine hydrochloride", p. 389 (1972).
Derwent Abstract, AN 88-202963 of JP 63 141 942 (Jun. 14, 1988).

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