Polyetherimide resins with very low levels of residual contamination
View Patent ↗Compositions and methods for producing compositions comprising a monoamine-endcapped polyimide component. Based on a gas chromatography mass spectroscopy analysis of a surface rinse of the composition performed at room temperature, the composition can have at least one surface with less than or equal to 5 ppb releasable phosphorous residuals, and less than or equal to 5 ppb releasable volatile organic compound residuals. The composition can also comprise less than or equal to 10 ppb combined releasable residuals. Because of the very low levels of residual contamination, the compositions can be used to produce a variety of articles, including a disk drive.
1. A composition comprising a monoamine-endcapped polyimide component selected from the group consisting of monoamine-endcapped polyetherimides,
wherein the composition, based on a gas chromatography mass spectroscopy analysis of a surface rinse of the composition performed at room temperature, has at least one surface with
less than or equal to 5 ppb releasable phosphorous residuals,
less than or equal to 5 ppb releasable volatile organic compound residuals, and
wherein the composition comprises less than or equal to 10 ppb combined releasable residuals.
2. The composition of claim 1 , wherein the composition contains <3 ppb phosphorous.
3. The composition of claim 1 , wherein the composition contains <1 ppb phosphorous.
4. The composition of claim 1 , wherein the monoamine-endcapped polyimide component is aniline-endcapped.
5. The composition of claim 1 , wherein the composition further comprises a filler selected from the group of organic fillers, inorganic fillers, and combinations thereof.
6. The composition of matter of claim 1 , wherein the composition further comprises a filler selected from the group of carbon fibers, glass fibers, minerals, and combinations thereof.
7. The composition of claim 1 , wherein the composition contains <2 weight percent stabilizers.
8. The composition of claim 1 , wherein the composition contains <1 weight percent stabilizers.
9. The composition of claim 1 , wherein the composition contains <0.001 weight percent stabilizers.
10. The composition of claim 1 , wherein the composition does not contain stabilizers.
11. The composition of claim 1 , wherein the composition, based on a gas chromatography mass spectroscopy analysis of vapors released at 350 degrees Celsius, for 15 minutes, has at least one surface having less than or equal to 20,000 ppb combined releasable inorganic volatile compounds and organic volatile compounds.
12. A composition comprising:
(a) from 60 to 99 weight percent of a polyimide component selected from the group consisting of polyetherimides, polyetherimide sulfones, and combinations thereof, wherein the composition contains <5 ppb releasable phosphorous residuals, wherein the polyimide component is monoamine-endcapped; and
(b) from 1 to 40 weight percent of a filler.
13. The composition of claim 12 , wherein the polyimide component is aniline-endcapped.
14. The composition of claim 12 , wherein the filler is selected from the group of organic fillers, inorganic fillers, and combinations thereof.
15. The composition of claim 12 , wherein the filler is selected from the group of carbon fibers, fiber glass, minerals, and combinations thereof.