Tire rubber composition comprising a coupling agent having a polythiosulfenamide function
申请人:Araujo Da Silva Jose Carlos
公开号:US20050032949A1
公开(公告)日:2005-02-10
An elastomeric composition usable for the manufacture of tires, based on at least (i) a diene elastomer, (ii) an inorganic filler as reinforcing filler and (iii), as (inorganic filler/diene elastomer) coupling agent, a organosilicon compound which is at least bifunctional and can be grafted on to the elastomer by means of a sulfur group having a polythiosulfenamide function, of formula:
≡Si-A-S
x
—NR
1
R
2
, (I)
in which: A is a divalent bond group, whether straight-chain or branched, which makes it possible to join the polythiosulfenamide group to a silicon atom of the organosilicon compound; x is an integer or fractional number of from 2 to 4;
R
1
represents hydrogen or a monovalent hydrocarbon group;
R
2
represents a monovalent hydrocarbon group selected from among C
3
-C
8
alkyls, whether straight-chain or branched, C
5
-C
10
cycloalkyls, C
6
-C
18
aryls and (C
6
-C
18
)aryl-(C
1
-C
8
)alkyls;
R
1
and R
2
possibly forming together and with the nitrogen atom to which they are bonded a single hydrocarbon ring. Tires and tire treads comprising a composition of this type.
一种可用于制造轮胎的弹性体组合物,至少基于(i)二烯弹性体,(ii)作为补强填料的无机填料和(iii)作为(无机填料/二烯弹性体)偶联剂的有机硅化合物,该有机硅化合物至少具有双官能团,并可通过具有多硫代磺酰胺功能的硫基接枝到弹性体上,其式为
≡Si-A-S
x
-NR
1
R
2
, (I)
其中A 是二价键基,无论是直链还是支链键基,使聚硫代磺酰胺基团与有机硅化合物的硅原子连接成为可能; x 是 2 至 4 的整数或分数;
R
1
代表氢或一价烃基;
R
2
代表选自 C
3
-C
8
烷基(无论是直链烷基还是支链烷基)、C
5
-C
10
环烷基,C
6
-C
18
芳基和(C
6
-C
18
)芳基-(C
1
-C
8
烷基;
R
1
和 R
2
可能与氮原子共同形成一个烃环。轮胎和轮胎花纹由此类成分组成。