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US 7,605,188 B2Granted
Polymer foams containing multi-functional layered nano-graphite
AssigneeOwens Corning Intellectual Capital, LLC
InventorsRoland R. Loh, Mark E. Polasky, Joseph P. Rynd, James Lee, Xiangmin Han, Kurt W. Koelling, Yadollah Delaviz
Life of this patent
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Abstract
This invention relates to foam insulating products, particularly extruded polystyrene foam, containing multi-layered nano-graphite as a process additive for improving the physical properties of foam products.
Claims14
A multi-functional polymeric foam material comprising:
- a) a polymer;
- b) a blowing agent;
- and
- c) multi-layered nano-graphite having a size in at least one dimension less than about 100 nanometers, said multi-layered nano-graphite being chemically modified to include carboxyl and phenolic hydroxyl functional groups,
- wherein other dimensions of said multi-layered nano-graphite are less than about 20 microns.
2 more elements
A rigid foam insulation board comprising:
- a) a polymer;
- b) a blowing agent;
- and
- c) multi-layered nano-graphite chemically modified to include carboxyl and phenolic hydroxyl functional groups, said multi-layered nano-graphite having a size in at least one dimension less than about 100 nanometers,
- wherein other dimensions of said multi-layered nano-graphite are less than about 20 microns.
2 more elements
Dependencies are inferred from the claim text.