Rubber compounds for use in producing vehicle tires
AssigneeBridgestone Europe NV/SA
InventorsRafaelle Di Ronza, Yoshihiro Morishita, Anke Blume, Rafal Anyszka, Maria del Pilar Bernal-Ortega
Life of this patent
Estimating the term…
Abstract
The invention provides diene rubber-silica compounds comprising a diene rubber matrix having dispersed therein a silica filler, wherein said silica filler is surface-modified by attachment of a π system-containing moiety which forms a π-π interaction with the diene rubber matrix. In particular, it provides such compounds in which the diene rubber is styrene-butadiene rubber. Such compounds can be vulcanized and are suitable for producing vehicle tire components, such as tire treads.
Claims16
A diene rubber-silica compound comprising:
- a diene rubber matrix having dispersed therein a silica filler,
- the silica filler having a a π system-containing moiety attached to the surface of the silica filler, the x system-containing moiety having π-π interaction with the diene rubber matrix.
A diene rubber-silica compound comprising:
- a diene rubber matrix having dispersed therein a silica filler;
- a π system-containing moiety attached to the surface of the silica filler and having π-π interaction with the diene rubber matrix,
- wherein the π system-containing moiety is a compound containing π systems chosen from an aromatic or heteroaromatic ring, a tropylium cation, an allyl group, or an acrolein group, and combinations thereof.
A diene rubber-silica compound comprising:
- a diene rubber matrix having dispersed therein a silica filler;
- a π system-containing moiety attached to the surface of the silica filler and having π-π interaction with the diene rubber matrix,
- wherein the π system-containing moiety is attached to the silica filler via a linking group which forms a bond to the silica filler and a bond to the x system-containing moiety,
- wherein the linking group is represented by:
- in which
- * denotes a point of attachment of the linking group to a surface of the silica filler;
- ** denotes the point of attachment of the linking group to the π system-containing moiety;
- each R is independently selected from —OH, C1-6 alkoxy and C1-6 alkyl;
- and
- Z is a C1-12 alkylene group which may be interrupted by one or more groups selected from —O—, —SiR′2— (in which each R′ is independently —OH, C1-6 alkoxy, or C1-6 alkyl), —PR″—, —NR″—, and —OP(O)(OR″)O— (in which R″ is H or C1-6 alkyl).
Dependencies are inferred from the claim text.