RUBBER MIXTURE Russian patent published in 2019 - IPC C08L9/00 C08L9/02 C08L9/06 C08L31/04 C08L33/26 C08K3/04 C08K3/06 C08K3/22 C08K3/36 C08K5/09 C08K5/31 C08K5/3437 C08K5/47 

Abstract RU 2688521 C1

FIELD: chemistry.

SUBSTANCE: invention relates to rubber industry, in particular to production of elastomer materials for sealing purposes, and can be used for inner layer of sealing elements in water-oil-swellable packers used in oil and gas industry. Rubber mixture contains butadiene-nitrile rubber with nitrile of acrylic acid content of 17–20 %, butadiene-methylstyrene rubber SKMS-30ARK, butadiene rubber SKD, Savilen 11808-340, sulfur, 2,2'-dibenzothiazole disulphide, Guanide F, zinc oxide, stearic acid, acetonanil H, technical carbon P 514, Rosil 175, talc, finely powdered mineral powder of schungite, colophony, polyacrylamide AK 639, reagent "Comet-R" and sodium salt of polyacrylic acid PAN-1.

EFFECT: improvement of relative elongation at rupture of rubber and increase of degree of volumetric swelling in mixture of oil and water (1:1 wt%).

1 cl, 2 tbl

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Authors

Ushmarin Nikolaj Filippovich

Efimovskij Egor Gennadevich

Egorov Evgenij Nikolaevich

Spiridonov Ivan Sergeevich

Sandalov Sergej Ivanovich

Koltsov Nikolaj Ivanovich

Dates

2019-05-21Published

2018-09-12Filed