MOONEY VISCOSITY STABLE BROMINATED ELASTOMERS Russian patent published in 2018 - IPC C07D211/94 C08K5/3435 C08L23/22 C08L23/28 C08L23/36 

Abstract RU 2658039 C2

FIELD: chemistry.

SUBSTANCE: invention relates to the field of brominated elastomeric compositions based on isomonoolefins having a stable Mooney viscosity over time. Bromobutyl elastomer composition of the invention comprises a free radical scavenger that is a sterically hindered nitroxyl ether or a nitroxide radical or a combination thereof in an amount of at least 0.05 wt%, and the Mooney viscosity of the composition does not increase by more than 15 up to 40% within 15 days at 80°C. Process for the preparation of such bromobutyl compositions is also provided.

EFFECT: stabilization of the Mooney viscosity of bromobutyl elastomer compositions allows their use in a wide range of rubber products such as sealing layers of tires, diaphragms of a tire vulcanizer, car tire chambers, air duct sleeves and the like.

16 cl, 2 dwg, 4 tbl

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RU 2 658 039 C2

Authors

Dzhakob Sanni

Sheffer Timoti D.

Klark Dzhon A.

Skott Adam Kh.

Makdonald Majkl F.

Shmig Dzhoel E.

Dates

2018-06-19Published

2014-12-15Filed