organoxysilanes polysulphides particularly used as coupling agent (s) of elastomer compositions containing them and articles made of elastomer (s) prepared on the basis of such compositions

摘要

The invention relates to propylene articulated polysulphide monoorganoxysilanes of formula (I); wherein R1, R2 et R3 are monovalent hydrocarbon groups and x is a number ranging from 3 +/- 0,1 to 5 +/- 0,1. Said compounds can be used as white charge-elastomer coupling agents in dienic rubber compositions comprising a white charge such as a siliceous material as a reinforcing charge. The invention also relates to dienic elastomer compositions comprising at least one polysulphide silane of formula (I), and dienic elastomer articles prepared from said compositions.