RUBBER COMPOUND Russian patent published in 2004 - IPC

FIELD: rubber industry. SUBSTANCE: invention provides rubber compound based on crude fluorine rubber SKF-25 that can be used for manufacturing general mechanical rubber goods such as rings, insertions, collars, sealing glands, as well as rolling diaphragms, membranes, etc. operated under aerobic conditions at elevated temperatures up to 200 C. Rubber compound contains, wt parts: rubber SKF-26 66-68, low-molecular rubber SKF-26 ONM 32-34, magnesium oxide 6-10. barium sulfate 26-30, calcium hydroxide 5-7, carbon black T- 900 20-26, di(4-hydroxYphenyl)dimethylmethane 0.8-1.0, triphenylbenzylphosphonium chloride 0.2-0.4, and pentaerythritol tetrafluoropelargonate (dispersant) 0.15- 0.25. EFFECT: reduced viscosity and improved dispersing ability of rubber compound. 5 tbl, 2 ex