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(19)

(11)

2 688 512

(13)

(51)

IPC

C08L9/02(2006-01-01)

C08L9/06(2006-01-01)

C08L31/04(2006-01-01)

C08K3/04(2006-01-01)

C08K3/22(2006-01-01)

C08K3/26(2006-01-01)

C08K3/36(2006-01-01)

C08K5/09(2006-01-01)

C08K5/18(2006-01-01)

C08K5/40(2006-01-01)

C08K5/43(2006-01-01)

C08K5/44(2006-01-01)

(21) (22)

Application

2018116974, 2018-05-07

(24)

Start date

2018-05-07

(22)

Actual filing date

2018-05-07

(45)

Published

2019-05-21

(72)

Inventor

Ushmarin Nikolaj FilippovichEfimovskij Egor GennadevichEgorov Evgenij NikolaevichSpiridonov Ivan SergeevichSandalov Sergej IvanovichKoltsov Nikolaj Ivanovich

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniya Gosudarstvennyj Universitet Imeni I.N. Ulyanova"

RUBBER MIXTURE Russian patent published in 2019 - IPC C08L9/02 C08L9/06 C08L31/04 C08K3/04 C08K3/22 C08K3/26 C08K3/36 C08K5/09 C08K5/18 C08K5/40 C08K5/43 C08K5/44

Abstract RU 2688512 C1

FIELD: technological processes.

SUBSTANCE: invention relates to rubber industry, in particular, to production of rubber mixtures for oil-swellable sealing elements used in oil and gas industry. Rubber mixture for oil-swelling sealing elements contains butadiene-nitrile rubber with nitrile of acrylic acid content of 17–20 %, isoprene rubber SKI-3, sevilen 11808-340, N,N'-dithiodimorpholine, thiuram D, sulphenamide C, zinc white, stearic acid, N-nitrosodiphenylamine, technical carbon T 900, rosil 175, talc, chalk, petroleum polymer resin "Sibplast".

EFFECT: invention improves relative elongation at rupture of rubber and increases degree of its volumetric swelling in oil.

1 cl, 2 tbl

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RU 2 688 512 C1

Authors

Ushmarin Nikolaj Filippovich

Efimovskij Egor Gennadevich

Egorov Evgenij Nikolaevich

Spiridonov Ivan Sergeevich

Sandalov Sergej Ivanovich

Koltsov Nikolaj Ivanovich

Dates

2019-05-21—Published

2018-05-07—Filed