Phenanthrene based polyimide resin

Details Phenanthrene based polyimide resin Phenanthrene based polyimide resin

1981-03-03

1983-02-08

Lee, Lester L.

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

Synthetic resins

From carboxylic acid or derivative thereof

4284735, 525472, 528220, 528229, 528233, 528247, C08G 7310

Patent

active

043730892

ABSTRACT:
A polyimide resin is made by converting a phanthrene to its 9, 10 diol derivative, reacting the derivative with formaldehyde to give a methylene bridged reaction product, oxidizing the reaction product to produce a polycarboxylated product, and reacting the polycarboxylated product with an aromatic diamine to form the polyimide resin. The invention also includes the resin, the reaction product and the polycarboxylated product.
The resin will be useful as a lamp capping cement, a high temperature insulator, in copper clad printed circuit boards, in glass or asbestos laminates for use as compressor blades.

REFERENCES:
patent: 3078279 (1963-02-01), McCraken et al.
patent: 4173573 (1979-11-01), Schulz et al.

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