Compositions that can be vulcanized and that are based on nitrile rubbers containing epoxy groups

Abstract

The invention relates to novel compositions that can be vulcanized and that are based on optionally fully or partially hydrogenated nitrile rubbers, which contain epoxy groups, and special cross-linking agents, which no longer require the use of conventional cross-linking agents, such as sulfur in particular. The vulcanized rubbers that can be produced therefrom have very good compression set at room temperature, 100 DEG C, and 150 DEG C and also exhibit high tensile stress together with good elongation at break properties.

Description

technical field [0001] The present invention relates to vulcanizable compositions based on optionally fully or partially hydrogenated nitrile rubber containing epoxy groups and specific crosslinking agents, their production process, the resulting vulcanizate production process, the resulting Vulcanized rubber, and fully or partially hydrogenated nitrile rubber containing epoxy groups. Background technique [0002] Nitrile rubber (often also referred to simply as "NBR") is understood to mean at least one α,β-unsaturated nitrile, at least one conjugated diene and, optionally, one or more other copolymerizable Copolymerization of monomers or terpolymers of rubber. Hydrogenated nitrile rubber ("HNBR") is to be understood as corresponding copolymers or terpolymers in which some or all of the C=C double bonds of the copolymerized diene units have been hydrogenated. [0003] Over the years, NBR and HNBR have established a strong position in the field of specific elastomers. They...

AI Technical Summary

Problems solved by technology

This cross-linking concept also includes polymers that are not suitable for various forms of cross-linking and cross-linking agents due to functional groups, thus posing a special challenge

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