Claims
- 1. As a composition of matter, a polyamide acid formed by reacting about equimolar amounts of a dianhydride with a diamine at a temperature below 500.degree. F., said dianhydride having the general formula ##STR4## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of hydrogen, an alkyl radical, and an aryl radical, and said diamine having the general formula
- H.sub.2 N --R.sub.3 --NH.sub.2
- wherein R.sub.3 is selected from the group consisting of alkylene and arylene groups.
- 2. The polyamide acid of claim 1 wherein R.sub.1 is hydrogen.
- 3. The polyamide acid of claim 2 wherein R.sub.2 is hydrogen.
- 4. As a composition of matter, the polyamide acid produced by reacting about equimolar amount of 1,3-adamantylene-bistrimellitate dianhydride with 4,4'-diaminodiphenyl ether at a temperature below 500.degree. F.
- 5. As a composition of matter, a polyestermide formed by reacting about equimolar amounts of a dianhydride with a diamine and heating the reaction product to a temperature of from 500.degree. F. to 700.degree. F., said dianhydride having the general formula ##STR5## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of hydrogen, an alkyl radical, and an aryl radical, and said diamine having the general formula
- H.sub.2 N--R.sub.3 --NH.sub.2
- wherein R.sub.3 is selected from the group consisting of alkalene and arylene groups.
- 6. The polyesterimide of claim 5 wherein R.sub.1 is hydrogen.
- 7. The polyesterimide of claim 6 wherein R.sub.2 is hydrogen.
- 8. As a composition of matter, a polyesterimide formed by reacting about equimolar amounts of 1,3-adamantylene-bistrimellitate dianhydride with 4,4'-diaminodiphenyl ether and subsequently heating the reaction product to a temperature of from 500.degree. F. to 700.degree. F.
Parent Case Info
This is a division, of application Ser. No. 597,339, filed July 21, 1975 now U.S. Pat. No. 3,976,665.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3814735 |
Thompson |
Jun 1974 |
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3847872 |
Thompson |
Nov 1974 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
597339 |
Jul 1975 |
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