申请人:Bridgestone Tire Company Limited
公开号:US03984383A1
公开(公告)日:1976-10-05
A vulcanizable rubber composition suitable for the production of rubber materials having improved scorching stability and heat aging resistance can be obtained by compounding raw material rubber with a sulfenamide compound having the following general formula ##EQU1## wherein X represents a residue selected from the group consisting of residues of hydrocarbon, alkyl ether and secondary alcohol having 2-20 carbon atoms, and residues represented by the general formulae ##EQU2## (wherein R' represents a residue of hydrocarbon or alkyl ether having 0-20 carbon atoms, and R" represents a hydrocarbon residue having 1-10 carbon atoms), and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are same or different and are selected from hydrocarbon residues having 2-10 carbon atoms, and hydrogen atom, or R.sub.1 is ringed with R.sub.2 and/or R.sub.3 is ringed with R.sub.4, through the nitrogen atom of the general formula (1), to form heterocyclic rings of 5-7 members.
通过将原材料橡胶与具有以下一般式的磺酰胺化合物混合,可以获得适用于生产具有改善的烘烤稳定性和耐热老化性的橡胶材料的可硫化橡胶组合物:##EQU1## 其中,X代表从烃残基、烷基醚和具有2-20个碳原子的二级醇残基组成的残基中选择的一个残基,以及由下列一般式表示的残基:##EQU2## (其中,R'代表具有0-20个碳原子的烃基或烷基醚残基,R"代表具有1-10个碳原子的烃基残基),以及R.sub.1,R.sub.2,R.sub.3和R.sub.4相同或不同,并且选择自具有2-10个碳原子的烃基残基、氢原子或R.sub.1与R.sub.2环状,R.sub.3与R.sub.4通过一般式(1)的氮原子环状,形成5-7成员的杂环环。