POLYSULPHIDE ORGANOSILOXANES WHICH CAN BE USED AS COUPLING AGENTS, ELASTOMER COMPOSITIONS CONTAINING SAME AND ELASTOMER ARTICLES PREPARED FROM SAID COMPOSITIONS

摘要

The invention relates to propylene articulated polysulphide monoorganoxysilanes of formula (I); wherein R 1, 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.