申请人:Crompton Corporation
公开号:US20030225195A1
公开(公告)日:2003-12-04
Disclosed herein is a rubber composition comprising:
a) a blocked mercaptosilane selected from the group consisting of:
[[(ROC(═O))
p
-(G)
j
]
k
-Y—S]
r
-G-(SiX
3
)
s
(1); and
[(X
3
Si)
q
-G]
a
-[Y—[S-G-SiX
3
]
b
]
c
(2)
wherein
Y is a polyvalent species (Q)
z
A(=E), each wherein the atom (A) attached to the unsaturated heteroatom E is attached to the sulfur, which in turn is linked via a group G to the silicon atom;
each R is chosen independently from hydrogen, straight, cyclic or branched alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, with each R containing from 1 to 18 carbon atoms;
each G is independently a monovalent or polyvalent group derived by substitution of alkyl, alkenyl, aryl or aralkyl wherein G can contain from 1 to 18 carbon atoms, with the proviso that if Y is —C(═O)—, G is not such that the blocked mercaptosilane would contain an &agr;,&bgr;-unsaturated carbonyl, and if G is univalent, G can be a hydrogen atom;
X is independently a group selected from the group consisting of —Cl, —Br, RO—, RC(═O)O—, R
2
C═NO—, R
2
NO—, R
2
N—, —R, and —(OSiR
2
)
t
(OSiR
3
) wherein each R is as above and at least one X is not —R;
Q is oxygen, sulfur or (—NR—);
A is carbon, sulfur, phosphorus, or sulfonyl;
E is oxygen, sulfur or NR;
p is 0 to 5; r is 1 to 3; z is 0 to 2; q is 0 to 6; a is 0 to 7; b is 1 to 3; j is 0 to 1, but it may be 0 only if p is 1, c is 1 to 6, t is 0 to 5; s is 1 to 3; k is 1 to 2, with the provisos that (A) if A is carbon, sulfur or sulfonyl, then (i) a+b=2 and (ii) k=1; (B) if A is phosphorus, then a+b=3 unless both (i) c is greater than 1 and (ii) b is 1, in which case a is c+1; and (C) if A is phosphorus, then k is 2;
b) an organic polymer; and
c) a filler.
本文揭示了一种橡胶组合物,包括:a)从以下组中选择的阻塞巯基硅烷:[[(ROC(═O))p-(G)j]k-Y—S]r-G-(SiX3)s(1)和[(X3Si)q-G]a-[Y—[S-G-SiX3]b]c(2)其中,Y是多价物种(Q)zA(==E),其中连接不饱和杂原子E的原子(A)连接到硫,硫再通过基团G连接到硅原子;每个R独立选择自氢、直链、环状或支链烷基,可能包含不饱和、烯丙基、芳基和芳烷基,每个R含有1至18个碳原子;每个G是通过取代烷基、烯丙基、芳基或芳烷基得到的一价或多价基团,其中G可以含有1至18个碳原子,但是如果Y是—C(═O)—,则G不是使阻塞巯基硅烷含有α,β-不饱和羰基的基团,如果G是一价的,则G可以是氢原子;X独立选择自—Cl、—Br、RO—、RC(═O)O—、R2C═NO—、R2NO—、R2N—、—R和—(OSiR2)t(OSiR3),其中每个R如上所述,至少有一个X不是—R;Q是氧、硫或(—NR—);A是碳、硫、磷或磺酰基;E是氧、硫或NR;p为0至5;r为1至3;z为0至2;q为0至6;a为0至7;b为1至3;j为0至1,但仅当p为1时,j可以为0;c为1至6;t为0至5;s为1至3;k为1至2,但前提是(A)如果A是碳、硫或磺酰基,则(i)a+b=2且(ii)k=1;(B)如果A是磷,则a+b=3,除非(i)c大于1且(ii)b为1,在这种情况下,a为c+1;(C)如果A是磷,则k为2;b)有机聚合物;和c)填料。