Aromatic polymers

Details Aromatic polymers Aromatic polymers

1990-02-27

1991-03-26

Nielsen, Earl

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528193, 528206, C08G 6112

Patent

active

050030329

ABSTRACT:
The invention relates to novel polyarylethers which are essentially ketonic and which are based on the dibenzofuran molecule. Such polymers are, surprisingly, amorphous, have high Tg's eg>200.degree. C., and have surprisingly high solvent resistance.

REFERENCES:
patent: 3953400 (1976-04-01), Dahl
patent: 4229564 (1980-10-01), Dahl
patent: 4396755 (1983-08-01), Rose
patent: 4398020 (1983-08-01), Rose
patent: 4645819 (1987-02-01), Sterzel
patent: 4820794 (1989-04-01), Darnell et al.
patent: 4861856 (1989-08-01), Darnell et al.

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