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US 4,611,047 AGranted
Dicarboxylic acid azomethines and high glass transition temperature polyester products produced therefrom
AssigneeFord Motor Company
InventorMohinder S. Chattha
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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.
Claims9
Polyester products having high glass temperatures and being formed by reacting:
- I. epoxy resin, and
- II. carboxy terminated aromatic azomethines 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 phenyl or pyridine group, n is O or 1, R' is an organic group, and the H.sub.2 N and COOH groups are linked through Y at the 1,3 or 1,4 positions,
- said compounds (A) and (B) being reacted in about a 1:2 molar ratio and under conditions wherein said CRO groups of (A) and said NH.sub.2 group of (B) react.
7 more elements
Dependencies are inferred from the claim text.