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US 2013/0171395 A1Published application
Polyimide resins for high temperature applications
OwnerYamaira Gonzalez, Jesus G. Moralez +2inventors
InventorsYamaira Gonzalez, Jesus G. Moralez, Wayne M. T. Wang, Timothy D. Krizan
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Abstract
Polyimide resin compositions that contain an aromatic polyimide, graphite, and acid-washed kaolinite are found to exhibit high thermal oxidative stability. Such compositions are especially useful in molded articles that are exposed to high temperatures, such as bushings, bearings, and seal rings that are used in aerospace, transportation, and materials handling applications.
Claims12
A composition comprising in admixture
- (a) an aromatic polyimide in an amount between about 30 and about 90 weight parts;
- (b) acid-washed kaolinite in an amount between about 0.5 and about 12 weight parts, and
- (c) graphite in an amount between about 0 and about 60 weight parts;
- wherein all weight parts combined together total to 100 weight parts.
1 more element
A three-dimensional article comprising an aromatic polyimide resin composition, said composition comprising in admixture
- (a) an aromatic polyimide in an amount between about 30 and about 90 weight parts;
- (b) acid-washed kaolinite in an amount between about 0.5 and about 10 weight parts;
- and
- (c) graphite in an amount between about 0 and about 60 weight parts;
- wherein all weight parts combined together total to 100 weight parts.
2 more elements
Dependencies are inferred from the claim text.