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US 9,637,619 B2Granted
Polysulfide mixtures, method for the production thereof, and use of the polysulfide mixtures in rubber mixtures
AssigneeLANXESS Deutschland GmbH
InventorsUlrich Feldhues, Heinz Unterberg, Hermann-Josef Weidenhaupt, Melanie Wiedemeier-Jarad
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Abstract
The present invention relates to novel polysulfides mixtures comprising compounds of the formula (I) where n is from 2 to 6, and R is C1-C8-alkyl, to processes for the production of said polysulfides mixtures, to use of these for the production of rubber matures, and to rubber vulcanizates produced therefrom.
Claims29
A polysulfide mixture comprising two or more compounds of the formula (I),
- where
- each R′ is a C2-alkylene;
- each of the two moieties R is identical or different, and is methyl, ethyl, n-propyl, 2-propyl, n-butyl, isobutyl, tert-butyl, or C5-C8 alkyl;
- and
- for at least one of the two or more compounds, n is 4, and for others of the two or more compounds, n is 2, 3, 5 or 6,
- wherein:
- the polysulfide mixture comprises a first proportion (x mol %) of the compounds of the formula (I) where n=4, and a second proportion (y mol %)of the compounds of the formula (I) where n is 2,3,5, or 6, and, based on a 100 mol % total quantity of the compounds of the formula (I)
- 80 mol %≦(x)≦[100 mol %−(y)].
5 more elements
Dependencies are inferred from the claim text.