Expandable thermoplastic nanocomposite polymeric compositions with an improved thermal insulation capacity
US8969466B2 · kind B2 · utility
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Key dates
| Filing date | Oct 6, 2010 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Sep 13, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2325/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Nanocomposite compositions based on expandable thermoplastic polymers which comprise: a) a polymeric matrix produced by the polymerization of a base comprising one or more polymerizable monomers; b) 1-10% by weight, calculated with respect to the polymer (a), of an expanding agent englobed in the polymeric matrix; c) 0.004-15% by weight, calculated with respect to the polymer (a), of an athermanous filler comprising nano-scaled graphene plates with a thickness (orthogonal to the graphene sheet) not greater than 150 nm, an average dimension (length, width, or diameter) not greater than 10 micrometers and a surface area>50 m2/g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.