Polyquinazolines and methods for their preparation
AssigneeHitachi Chemical Company, Ltd.
InventorVirgil J. Lee
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Abstract
New polyquinazoline polymers are provided by reacting novel monomers. The polymers incorporate repeat units that have at least one quinazoline nucleus and at least one ether linkage at the quinazoline 2 or 4 position. The quinazoline polymers are prepared by treating a monomer which comprises a quinazolone nucleus having one activated halide group with a base in a dipolar solvent to thereby form the polyquinazoline polymer.
Claims12
A method for preparing a polyquinazoline polymer comprising the steps of:
- a) providing a bis-quinazolone monomer, present as its bis-oxide salt or in the presence of a base capable of deprotonating the quinazolone groups,
- b) providing a second monomer prone to nucleophilic substitution at two sites, and
- c) allowing the bis-quinazolone monomer and the second monomer to react in a dipolar solvent to thereby form the polyquinazoline polymer.
A polymer comprising repeat units having at least one quinazoline nucleus and at least one ether linkage at the quinazoline 2 or 4 position.
Dependencies are inferred from the claim text.