Colorless organic-soluble aromatic poly(ether-imide)s, the organic solutions and preparation thereof
First Claim
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1. A organosoluble poly(ether imide) comprising units represented by the following formula (II):
- wherein Ar2 is selected from the group consisting essentially of ##STR50##
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Abstract
The present invention provides a series of easily processable poly(ether-imide)s that are organic-soluble and can afford colorless films, their organic solutions and their manufacturing process. The poly(ether-imide) is prepared from a dianhydride and a diamine, wherein the dianhydride is a bis(ether anhydride) having tert-butyl group, i.e. 1,4-bis(3,4-dicarboxyphenoxy)-2-tert-butylbenzene dianhydride. The present invention is also directed to synthesis of this special dianhydride.
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15 Claims
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1. A organosoluble poly(ether imide) comprising units represented by the following formula (II):
- wherein Ar2 is selected from the group consisting essentially of ##STR50##
- View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
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8. An organic solution of poly(ether imide) comprising an organic solvent and a poly(ether imide) which dissolve in said organic solution, wherein the organic solvent is selected from the group consisting essentially of N-methyl-2-pyrrolidone (NMP), N,N-dimethylacetamide (DMAc), N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), m-cresol, pyridine, chloromethane, and chloroethane;
- and said poly(ether imide) comprising units represented by the following formula (II);
wherein Ar2 is selected from the group consisting essentially of ##STR54## - View Dependent Claims (9, 10, 11, 12, 13, 14)
- and said poly(ether imide) comprising units represented by the following formula (II);
Specification