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(19)

(11)

2 699 643

(13)

(51)

IPC

C08L9/02(2006-01-01)

C08L31/04(2006-01-01)

E21B33/12(2006-01-01)

C09K3/10(2006-01-01)

C08K3/11(2018-01-01)

C08K3/13(2018-01-01)

C08K3/14(2018-01-01)

C08K3/22(2006-01-01)

C08K3/28(2006-01-01)

C08K5/09(2006-01-01)

C08K5/40(2006-01-01)

(21) (22)

Application

2019108516, 2019-03-25

(24)

Start date

2019-03-25

(22)

Actual filing date

2019-03-25

(45)

Published

2019-09-06

(72)

Inventor

Ushmarin Nikolaj FilippovichEgorov 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 C08L31/04 E21B33/12 C09K3/10 C08K3/11 C08K3/13 C08K3/14 C08K3/22 C08K3/28 C08K5/09 C08K5/40

Abstract RU 2699643 C1

FIELD: technological processes.

SUBSTANCE: invention relates to rubber industry and can be used for external layer of sealing elements in water-swellable packers used in oil and gas industry. Rubber mixture contains butadiene-nitrile rubber with nitrile of acrylic acid content of 17–20 %, isoprene rubber SKI-3, ethylene-propylene rubber SKEPT-40, sevylene 11808-340, sulfur, 2,2'-dibenzothiazole disulphide, guanide F, zinc white, stearic acid, acetonanil H, technical carbon P 514, rosil 175, talc, finely powdered mineral powder of schungite, rosin, needle-punched fabric "Oxipan", polyacrylamide AK 639, sodium polyacrylate and reagent "Cometa-R".

EFFECT: improved index of relative elongation at break of rubber and increased degree of its volumetric swelling in water.

1 cl, 2 tbl

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RU 2 699 643 C1

Authors

Ushmarin Nikolaj Filippovich

Egorov Evgenij Nikolaevich

Spiridonov Ivan Sergeevich

Sandalov Sergej Ivanovich

Koltsov Nikolaj Ivanovich

Dates

2019-09-06—Published

2019-03-25—Filed