Fire-resistant rubber composition and hose

A halogen-free, fire-resistant rubber composition comprising:

• 100 parts by weight of elastomer comprising 50-100 parts of at least one olefin-type elastomer;
• at least one fire-retardant boron source selected from the group consisting of boric acid, sodium borate, and zinc borate;
• red phosphorous and at least one other fire-retardant phosphorous source;
• at least 75 parts of at least one fire-retardant metal-hydrate;
• at least one nitrogen source selected from the group consisting of a fire-retardant nitrogen compound and a nitrile-containing elastomer;
• an inorganic silica source and less than 20 parts of carbon black.

A halogen-free, fire-resistant rubber composition comprising:

• 100 parts by weight of elastomer comprising 50-90 parts of at least one olefin-type elastomer;
• 10-20 parts of at least one fire-retarding boron source selected from the group consisting of boric acid, sodium borate, and zinc borate;
• 2-34 parts total of red phosphorous and at least one other fire-retardant phosphorous source;
• 75-195 parts of at least one metal-hydrate;
• 10-66 parts of at least one nitrogen source selected from the group consisting of a fire-retardant nitrogen compound and a nitrile-containing elastomer;
• an inorganic silica source and less than 20 parts of carbon black.

A halogen-free, fire-resistant rubber composition comprising:

• 100 parts by weight of an elastomer blend comprising 90 to 50 parts of an olefin-type elastomer and 10 to 50 parts of a nitrile-containing elastomer;
• 10-20 parts of a boron source;
• 2-34 parts total of red phosphorous and at least one other fire-retardant phosphorous source;
• 75-195 parts of a metal hydrate;
• and
• 4-16 parts of a fire-retarding melamine or ammonium compound selected from the group consisting of melamine, melamine cyanurate, ammonium phosphates, melamine phosphates, and ammonium polyphosphate.

A fire-resistant hose comprising a halogen-free, fire-resistant rubber composition comprising:

• 100 parts by weight of an elastomer blend comprising 90 to 50 parts of an ethylene-vinylacetate elastomer and 10 to 50 parts of a hydrogenated nitrile-butadiene elastomer;
• 10-20 parts of zinc borate;
• 2-8 parts of red phosphorous;
• 75-195 parts of a aluminum trihydrate;
• 10-26 parts of trioctylphosphate;
• 4-16 parts of melamine phosphate;
• and an inorganic silica source.

A fire-resistant hose comprising an inner tube layer and an outer cover layer, wherein at least one of said tube and said cover comprise a halogen-free, fire-resistant rubber composition comprising:

• 100 parts by weight of an elastomer blend comprising 90 to 50 parts of an olefin-type elastomer and 10 to 50 parts of a nitrile-containing elastomer;
• 10-20 parts of a boron source;
• 2-34 parts total of red phosphorous and at least one other fire-retardant phosphorous source;
• 75-195 parts of a metal hydrate;
• and
• 4-16 parts of a fire-retarding melamine or ammonium compound selected from the group consisting of melamine, melamine cyanurate, ammonium phosphates, melamine phosphates, and ammonium polyphosphate.

A fluid handling system comprising a pump, a hose connector, and a fire-resistant hose comprising an inner tube layer and an outer cover layer, wherein at least one of said tube and said cover comprise a halogen-free, fire-resistant rubber composition comprising:

• 100 parts by weight of an elastomer blend comprising 90 to 50 parts of an olefin-type elastomer and 10 to 50 parts of a nitrile-containing elastomer;
• 10-20 parts of a boron source;
• 2-34 parts total of red phosphorous and at least one other fire-retardant phosphorous source;
• 75-195 parts of a metal hydrate;
• and
• 4-16 parts of a fire-retarding melamine or ammonium compound selected from the group consisting of melamine, melamine cyanurate, ammonium phosphates, melamine phosphates, and ammonium polyphosphate.