Silane compound, rubber composition and tire
Disclosed are a silane compound of the general formula (1) described below, as well as a rubber composition including the same, and a tire. A silane compound of the general formula (1) is useful because of its ability to provide a silane compound comprising: a reactive functional group having a high reactivity with an organic polymer material such as rubber, and having a low polarity; and a hydrolyzable group having a high reactivity with an inorganic material such as silica or glass. The symbols in the formula are defined in the specification.
1. A silane compound represented by the general formula (1) described below:
wherein R 1 and R 2 each independently represent hydrogen or an alkyl group; wherein R 1 and R 2 may form a crosslinked structure represented by —(CH 2 ) e —;
R 3 and R 4 each independently represent hydrogen or an alkyl group; wherein R 3 and R 4 may form a crosslinked structure represented by —(CH 2 ) f —;
R 5 is hydrogen or an alkyl group;
R 6 is an alkoxy group, or an amino group substituted with one or more alkyl groups;
R 7 is hydrogen or an alkyl group;
a is an integer of 1;
b is an integer of 1;
c is an integer of 1 to 3;
d is an integer of 0 to 5;
e and f are each independently an integer of 1 to 3; and
n is an integer of 1 to 3.
2. The silane compound according to claim 1 , the silane compound is at least one selected from the group consisting of:
3. The silane compound according to claim 1 , the silane compound is:
4. A rubber composition comprising the silane compound according to claim 1 ; an elastomeric polymer; and an inorganic material.
5. The rubber composition according to claim 4 , further comprising a silane compound represented by the general formula (2) described below:
wherein X is an integer of 2 to 20;
o and o′ are each independently an integer of 1 to 10;
p and q are each independently an integer of 1 to 3;
R 11 and R 13 are each independently an alkoxy group, or an amino group substituted with one or more alkyl groups; and
R 12 and R 14 are each independently hydrogen or an alkyl group.
6. The rubber composition according to claim 4 , wherein the content of the silane compound in said rubber composition is, per 100 parts by mass of said elastomeric polymer, 0.1 to 30 parts by mass.
7. A tire comprising the rubber composition according to claim 4 .