OIL-AND-PETROL RESISTANT PARONITE Russian patent published in 2016 - IPC B32B25/02 C09K3/10 

FIELD: fuel.

SUBSTANCE: invention relates to paronites, intended for compaction of flat fixed compacted surfaces, used in media organic oils and fuels. Oil-and-petrol resistant paronite includes several superimposed layers of polymer composite material, polymer matrix of which is made from rubber vulcanisate, wherein matrix is made of nitrile rubber vulcanisate, matrix content in composite is 15.0-18.0 wt%, matrix further includes a liquid substance immiscible with oil and petrol and capable of dissolution of initial polymer matrix, wherein ratio of rubber vulcanisate and liquid substance in matrix is 1.00:0.03÷0.10, dispersed filler is made from alumina, content of dispersed filler in composite is 19.0-21.0 wt%, fibre filler is made of asbestos, content of fibrous filler in composite is 60.0-63.0 wt%, wherein composite additionally contains an organic pigment in amount of 0.2-0.4 wt% and an antioxidant in amount of 0.1-0.6 wt%.

EFFECT: higher sealing capacity of paronite, higher resistance of paronite to heat ageing during use in hot oil and fuel, reduced possibility of swelling of paronite in petrol and oil.

1 cl, 1 ex