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US 11,118,035 B2Granted
Highly fire-resistant expanded polymeric material
AssigneeArmacell Enterprise GmbH
InventorsJon Beaudry, David Polito, Kartik Patel
Life of this patent
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Abstract
A highly fire-resistant expanded polymeric material for thermal insulation, acoustic insulation and/or fire barrier contains rubber, expandable graphite, at least one alkaline earth metal component selected from alkaline earth metal carbonates, alkaline earth metal hydroxides, hydrates of either, and combinations thereof, and a component containing silica or a silicate. The expanded polymeric material is preferably manufactured by a process including decomposition of a chemical blowing agent.
Claims26
An expanded polymeric material comprising:
- 100 phr rubber, wherein at least 80% of the rubber comprises acrylonitrile butadiene rubber (NBR), chloroprene rubber (CR), ethylene propylene diene monomer rubber (EPDM), butadiene rubber (BR), chlorosulfonated polyethylene rubber (CSM), and/or combinations thereof,
- expandable graphite in an amount of 5 to 200 phr,
- a compound or mixture of compounds containing at least one alkaline earth metal ion, at least one hydrogen carbonate or carbonate ion, and at least one hydroxyl group or water molecule in a total amount of 50 to 500 phr, and
- a component containing silica or silicate in an amount of 5 to 200 phr;
- wherein a total mass of the expanded polymeric material is at least 300 phr and less than 1200 phr.
2 more elements
Dependencies are inferred from the claim text.