Back to results
US 2006/0142468 A1Published application
Microsphere-filled polytetrafluoroethylene compositions
Assignee3M Innovative Properties Company
InventorsJames Downing, Kenji Nagai, Makoto Nagase, Katsuhiko Nakazato
Life of this patent
Estimating the term…
Abstract
The present invention is a composition that includes granular-grade polytetrafluoroethylene and a plurality of microspheres, where the plurality of microspheres have an average specific gravity less than about 0.9 grams per cubic centimeter.
Claims24
A composition comprising:
- granular-grade polytetrafluoroethylene;
- and
- a plurality of microspheres, wherein the plurality of microspheres have an average specific gravity less than about 0.9 grams per cubic centimeter.
A composition comprising:
- granular-grade polytetrafluoroethylene;
- and
- a plurality of microspheres, wherein the plurality of microspheres exhibit an average crush strength-to-density ratio of at least about 100 megapascals-cubic centimeters/gram.
A method of forming an article, the method comprising:
- providing a composition comprising granular-grade polytetrafluoroethylene and a plurality of microspheres, wherein the plurality of microspheres have an average specific gravity less than about 0.9 grams per cubic centimeter;
- compression molding the composition to form a compressed composition;
- and
- sintering the compressed composition to form the article.
1 more element
Dependencies are inferred from the claim text.