Silica reinforced rubber compositions of improved processability and storage stability
申请人:PIRELLI PNEUMATICI S.P.A.
公开号:US20030158317A1
公开(公告)日:2003-08-21
The disclosure relates to a process for improving the processability, storage stability and/or cure rate of an uncured silica reinforced rubber composition where silica comprises the major filler in the reinforced rubber composition, which comprises combining a mixture comprising, rubber, silica and at least one organic compound having a low molecular weight and a functional group wherein said functional group is at least an epoxy group, such as an epoxy/ether, epoxy/hydroxyl, epoxy/ester, epoxy/amine, ether/amine, episulfide, episulfide/ether, episulfide/hydroxyl, episulfide/ester functional group located in a terminal or sterically unhindered position in the molecule of said organic compound where the molecular weight of said organic compound having a low molecular weight is less than 7,000, or the organic compound comprises an abietyl, styrenated resorcinol formaldehyde, or ester hydroxyl organic compound having a hydroxyl, ester, and optionally, an ether group, such as an ester diol.
本公开涉及一种改善未固化二氧化硅增强橡胶组合物的加工性、储存稳定性和/或固化速率的方法,其中二氧化硅是增强橡胶组合物中的主要填料,其包括混合橡胶、二氧化硅和至少一种具有低分子量和功能基团的有机化合物的步骤,其中所述功能基团至少为环氧基团,例如末端或立体位于有机化合物分子中的环氧醚、环氧羟基、环氧酯、环氧胺、醚胺、环硫醚、环硫醚/醚、环硫醚/羟基、环硫醚/酯官能团,所述低分子量有机化合物的分子量小于7000,或者所述有机化合物包括具有羟基、酯和可选的醚基团的阿比蒂尔、苯乙烯化间苯二酚甲醛或酯二元醇等有机化合物。