Claims
- 1. A substantially solvent free meltable or sinterable polyetheramide acid reaction product of an organic dianhydride selected from the group consisting of
- (A) aromatic bis(ether anhydride)s of the general formula, ##STR9## (B) mixtures of 1 or more of said bis(ether anhydride)s with up to 30 mol percent of benzophenone dianhydride of the formula, ##STR10## with at least one organic diamine of the general formula,
- H.sub.2 N--R--NH.sub.2,
- where said polyetheramide acid reaction product has a number average molecular weight of below 5000 and average particle size of from about 0.5 microns to about 70 microns, where Z is a member selected from the class consisting of (a) a divalent organic radical having the following formulas, ##STR11## and (b) divalent organic radicals of the general formula, ##STR12## where X is a member selected from the class consisting of divalent radicals of the formula, ##STR13## where y is an integer from 1 to 5; and R is a divalent organic radical selected from the class consisting of aromatic hydrocarbon radicals having from 6 to about 20 carbon atoms and halogenated derivatives thereof, alkylene radicals having from 2 to about 20 carbon atoms, cycloalkylene radicals having from 3 to about 20 carbon atoms, from C.sub.2 to about C.sub.8 alkylene terminated polydiorganosiloxane and divalent radicals of the general formula, ##STR14## where Q is a member selected from the class consisting of --O--, --S--, and --C.sub.x H.sub.2x --, and x is an integer from 1 to 5.
- 2. The polyetheramide acid reaction product of claim 1, where the organic dianhydride is 2,2'-bis[4-(2,3-dicarboxyphenoxy)phenyl]propane dianhydride and the organic diamine is metaphenylene diamine.
Parent Case Info
This is a continuation, of application Ser. No. 788,248, filed Apr. 18, 1977, now U.S. Pat. No. 4,098,800.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3847867 |
Heath et al. |
Nov 1974 |
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3991004 |
Takekoshi et al. |
Nov 1976 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
788248 |
Apr 1977 |
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