SILANE FUNCTIONALIZED OLIGOMER AND RUBBER COMPOUND COMPRISING THE SAME
A rubber composition includes high molecular weight diene elastomer, 5 to 120 phr of silica, 0 to 100 phr of a carbon black, and a silane modified oligomer including diene monomers and optionally vinyl aromatic monomers in polymerized form, wherein the silane modified oligomer has a molecular weight of 1000 to 5000 g/mol. A method of making the rubber composition includes compound mixing the components of the rubber composition in situ.
1 . A rubber composition comprising:
high molecular weight diene elastomer;
5 to 120 phr of silica;
0 to 100 phr of a carbon black; and
a silane modified oligomer comprising diene monomers in polymerized form,
wherein the silane modified oligomer has a molecular weight of 1000 to 5000 g/mol.
2 . The rubber composition of claim 1 , wherein the silane modified oligomer further comprises vinyl aromatic monomers in polymerized form.
3 . The rubber composition of claim 1 , wherein the silane modified oligomer has a molecular weight of 2000 to 4000 g/mol.
4 . The rubber composition of claim 1 , wherein the silane modified oligomer has a molecular weight of 2500 to 3500 g/mol.
5 . The rubber composition of claim 1 , wherein the silane modified oligomer is a silane modified polybutadiene.
6 . The rubber composition of claim 1 , wherein the silane modified oligomer is terminally functionalized.
7 . The rubber composition of claim 6 , wherein the silane modified oligomer is monofunctional.
8 . The rubber composition of claim 6 , wherein the silane modified oligomer is difunctional.
9 . The rubber composition of claim 1 , wherein the rubber composition is sulfur-vulcanizable.
10 . The rubber composition of claim 1 , wherein the high molecular weight diene elastomer is selected from the group consisting of polybutadiene, polyisoprene, copolymers of butadiene and vinyl aromatic monomers or isoprene and vinyl aromatic monomers, and mixtures of two or more thereof.
11 . A tire manufactured from the rubber composition of claim 1 .
12 . A method of making a rubber composition comprising compound mixing in situ:
high molecular weight diene elastomer;
5 to 120 phr of silica;
0 to 100 phr of a carbon black; and
a silane modified oligomer comprising diene monomers in polymerized form,
wherein the silane modified oligomer has a molecular weight of 1000 to 5000 g/mol.
13 . The method of claim 12 , wherein the silane modified oligomer has a molecular weight of 2500 to 3500 g/mol.
14 . The method of claim 12 , wherein the silane modified oligomer is terminally functionalized.
15 . The method of claim 14 , wherein the silane modified oligomer is difunctional.
16 . The method of claim 12 , wherein the silane modified oligomer is terminally functionalized with tetraethoxysilane.
17 . The method of claim 12 , wherein the silane modified oligomer further comprises vinyl aromatic monomers in polymerized form.
18 . The method of claim 12 further comprising adding a sulfur-based vulcanization agent.