Phenanthrene/HCHO derived polyamide-imide

Details Phenanthrene/HCHO derived polyamide-imide Phenanthrene/HCHO derived polyamide-imide

1980-07-31

1982-08-24

Anderson, Harold D.

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

Synthetic resins

From ketone or ketene reactant

4284735, 525472, 528220, 528233, 528247, 528353, C08G 216, C08G 7310

Patent

active

043462120

ABSTRACT:
This invention relates to thermally stable resins and provides such a resin made from cheaply available coal-derived materials, whereas presently available resins are made from increasingly expensive oil-derived materials.
The resin comprises the condensation product of a reaction between an aromatic diamine and a phenanthrene-formaldehyde reaction product, which product has been oxidized to produce keto groups bridging the phenanthrene moieties and carboxy groups. The condensation product is a poly-(amide-imide).
The invention also includes a method of making the resin and varnishes containing the resin.
The resin will find use for instance as a high temperature insulator or in glass or asbestos laminates in compressor blades.

REFERENCES:
patent: 3078279 (1963-02-01), McCracken et al.
patent: 4173573 (1979-11-01), Schulz et al.
Chemical Abstracts, vol. 76, (1972), No. 46746 v.
English Language Translation of German Document Number 420,442.

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