COLOUR-STABLE NITRILE RUBBERS Russian patent published in 2019 - IPC C08C1/14 C08C1/15 C08F236/12 C08F6/22 C08L9/04 

Abstract RU 2689632 C2

FIELD: technological processes.

SUBSTANCE: invention relates to a novel aluminum nitrile rubber, a method for production thereof, cured mixtures based on said nitrile rubber, a method of producing vulcanisates from said mixtures, as well as vulcanisates obtained. Colour-stable, low-salt nitrile rubber contains repeating structural units of at least one α,β-unsaturated nitrile monomer and at least one conjugated diene monomer and has an aluminum index E corresponding to the general given formula (I) of less than or equal to 35.0 ppm/MU in terms of nitrile rubber. Polymerised latex containing nitrile rubber is coagulated using at least one aluminum salt. Vulcanised mixture containing nitrile rubber contains at least one cross-linking agent. Volcanized rocks are obtained in the form of molded parts.

EFFECT: invention enables to obtain nitrile rubber, having good colour stability and certain content of aluminum, and at the same time, very good processing properties and good vulcanisation profile.

15 cl, 8 tbl

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RU 2 689 632 C2

Authors

Brando Sven

Kajzer Andreas

Dates

2019-05-28Published

2015-11-25Filed