THERMOSTABLE RUBBER MIXTURE WITH INCREASED HARDNESS Russian patent published in 2015 - IPC C08L9/02 C08K3/04 C08K3/36 C08K5/09 C08K5/10 C08K5/14 

FIELD: chemistry.

SUBSTANCE: thermostable mixture with increased hardness includes the following ingredients, wt. p.: butadiene-nitrile caoutchouc - 10.0-15.0, partially hydrated butadiene-nitrile caoutchouc - 85.0-90.0, vulcanising agent - perkadox BC-FF - 7.0-7.5, coagent of peroxide vulcanisation deltagran HVA-270 GE - 1.5-2.0, zinc monomethacrylate - 4.0-5.0, phenolformaldehyde resin PR-012A - 1.5-2.0, technical urotropine - 1.5-2.0, irganox 1010 - 2.0-3.0, acetonanyl H - 0.5-1.5, technical carbon N 220 - 50.0-55.0, technical carbon P 803 - 20.0-25.0, rosil-175 - 4.0-6.0, oilpolymer resin "Shinplast" - 1.5-2.0, polymethylsiloxane PMS-200 - 0.5-1.5, oligoetheracrylate MGF-9 - 4.0-6.0, oligoetheracrylate TGM-3 - 4.0-6.0, zincolet BB-222 - 1.5-2.5.

EFFECT: invention makes it possible to increase elasticity-strength properties and heat-aggressiveness resistance of vulcanisate at 150°C, provide sealing ability of rubber elements increase their efficiency, increase resistance to tear.

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