USE OF A COMBINATION OF A FUNCTIONALISED ORGANOSILANE-BASED COMPOUND AND A COUPLING ACTIVATOR AS A COUPLING SYSTEM IN DIENIC ELASTOMER COMPOSITIONS CONTAINING A WHITE FILLER

摘要

The invention relates to the use of a combination (i) of a member of a group of coupling agents based on organosilanes of formula (I), each with a double ethylenic bond activated (2i) with a very small quantity of a coupling activator consisting especially of an organic peroxide; as a white filler-elastomer coupling system in dienic rubber compositions (s) containing a white filler, especially a siliceous white filler, as a reinforcing filler. The organosilanes correspond to formula (I) (R<1>O)a(R<2>)3-aSiZ, wherein R<1> and R<2> are monovalent hydrocarbonated groups, a is a number chosen from 1, 2 and 3, and Z is a function containing an activated ethylenic double bond, chosen especially from a maleamic acid, acrylamide, acrylic or isomaleimide function.