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US 4,595,761 AGranted
Dicarboxylic acid azomethines and high glass transition temperature polyester products produced therefrom
AssigneeFord Motor Company
InventorMohinder S. Chattha
Life of this patent
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Abstract
This invention is directed to acid terminated azomethines formed by reacting aromatic dialdehydes or aromatic diketones with amino-carboxylic acid compounds. These oligomers may be reacted with epoxy resins to produce polymer material having high glass transition temperatures.
Claims7
A carboxy terminated aromatic azomethine formed by reacting:
- (A) aromatic compounds having the formula:
- ORC--X--CRO,
- wherein X is a phenyl group, each R is H or an alkyl group having 1-5 carbon atoms, and the CRO groups are linked through X at the 1,3 or 1,4 positions;
- and
- (B) compounds having the formula
- H.sub.2 N--Y--(R').sub.n --COOH:
- wherein Y is a pyridine group, n is 0 or 1, R' is an organic group, and the H.sub.2 N group and the COOH group are linked through Y at the 1,3 or 1,4 positions,
- said compounds (A) and (B) being reacted in about a 1:2molar ratio and under conditions wherein said CRO groups of (A) and said NH.sub.2 group of (B) react.
5 more elements
Dependencies are inferred from the claim text.