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US 11,028,260 B2Granted
Rubber composition, rubber molded body, and method for production of rubber molded body
AssigneeSumitomo Chemical Company, Limited
InventorsTakashi Sakai, Sadayuki Nakano
Life of this patent
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Abstract
A rubber composition contains: (A) an ethylene-α-olefin-based copolymer rubber including an ethylene unit and an α-olefin unit having 3 or more carbon atoms; (B) a fire retardant including a phosphorus atom and a nitrogen atom; (C) a thermally expandable graphite; and (D) additive particles that are porous particles or particles having ion exchangeability. A content of the fire retardant is 50 to 250 parts by mass and a content of the additive particles is 15 parts by mass or less with respect to 100 parts by mass of the ethylene-α-olefin-based copolymer rubber.
Claims5
A rubber composition comprising:
- (A) an ethylene-α-olefin-based copolymer rubber comprising an ethylene unit and an α-olefin unit having 3 or more carbon atoms;
- (B) a fire retardant comprising a phosphate salt formed from phosphoric acid or a polyphosphoric acid and alkylene polyamine or polyalkylene polyamine;
- (C) a thermally expandable graphite;
- and
- (D) additive particles that are porous particles or particles having ion exchangeability, wherein the additive particles are silica particles, hydrotalcite particles, or a combination thereof, and wherein
- a content of the fire retardant is 50 to 250 parts by mass and a content of the additive particles is 0.5 parts by mass to 10 parts by mass with respect to 100 parts by mass of the ethylene-α-olefin-based copolymer rubber.
3 more elements
Dependencies are inferred from the claim text.