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US 6,472,481 B1Granted
Sulfur-functional polyorganosiloxanes
AssigneeDegussa AG
InventorsHans-Detlef Luginsland, Roland Krafczyk, Wolfgang Lortz
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Abstract
Sulfur-functional polyorganosiloxanes corresponding to the general formula I with substituents as described in the specification, corresponding to the general formula I They can be used in rubber mixtures.
Claims4
A sulfur-functional polyorganosiloxane corresponding to the general formula I
- wherein R1, R2, R3, R4, independently of one another, denote H,(C1-C4)alkyl, (C1-C4)alkoxy, (C1-C4)haloalkoxy, (C1-C4)haloalkyl, aryl or aralkyl and
- W denotes a group which bonds to the silica and
- Y denotes alkyl, haloalkyl, aryl or aralkyl and
- Z is optionally present and denotes an alkylidene group having 1-6 carbon atoms and
- A denotes a group which bonds with at least one elastomer of the rubber mixture:
- for q=1 a mercapto group(SH) and thiocyanate group (SCN) and
- for q=2 a disulfide (S2) and a polysulfide (Sx) with x=2-10 and
- H denotes hydrogen and the sum of k+m+n+p≧3 and k and n can equal 0.
5 more elements
A sulfur-functional polyorganosiloxane corresponding to the general formula I
- wherein R1, R2, R3, R4, independently of one another, denote H,(C1-C4) alkyl, (C1-C4)alkoxy, (C1-C4) haloalkoxy, (C1-C4) haloalkyl, aryl or aralkyl and
- W denotes a group which bonds to the silica and
- Y denotes alkyl, haloalkyl, aryl or aralkyl and
- Z denotes CH2CH2CH2, and
- A denotes a group which bonds with at least one elastomer of the rubber mixture:
- for q=1 a mercapto group(SH) and thiocyanate group (SCN) and
- for q=2 a disulfide (S2) and a polysulfide (Sx) with x=2-10 and
- H denotes hydrogen and the sum of k+m+n+p≧3 and k and n can equal 0.
5 more elements
Dependencies are inferred from the claim text.