Method for making polyimide
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Date
2003-05-27
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Publisher
United States Patent and Trademark Office
Abstract
The invention is directed to method for making a polyimide by converting the dianhydride to the ester acid and reacting the ester acid with a diamine. The invention allows for the controlled addition of aliphatic diamines resulting in control of the polyimide properties such as the glass transition temperature, solubility, and melt processability.