Heterocyclic aromatic polymers of the polyimidazopyrrolone class

Details Heterocyclic aromatic polymers of the polyimidazopyrrolone class Heterocyclic aromatic polymers of the polyimidazopyrrolone class

1977-09-09

1980-06-17

Anderson, Harold D.

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

Synthetic resins

From silicon reactant having at least one...

260 302, 260 326NA, 260 37N, 428474, 525420, 525432, 528 38, 528 41, 528172, 528173, 528220, 528327, 528321, 528328, 528331, C08G 6912, C08G 7726

Patent

active

042085055

ABSTRACT:
Long-chain polymeric polyimidazopyrrolones (also referred to as pyrrones) have macromolecular chains of the formula: ##STR1## where A is a tetravalent organic radical and n is a large whole number. The polymers have film-forming properties and can be used in the production of laminates or composite materials, for example, friction pads.

REFERENCES:
patent: 3637594 (1972-01-01), Gallus et al.

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