Abstract: The invention relates to organosilicon compounds selected from, inter alia, functional polysilylated organosilicon compounds bearing polythiosulphenamide function groups having formula (I): R1—Sx—NR2—R3, wherein R1, x, R2 and R3 are as defined in claim 1. Said compounds can be used as white filler/elastomer coupling agents in diene rubber compositions comprising, by way of reinforcing filler, a white filler such as a siliceous material.

Abstract: The invention relates to propylene articulated polysulphide monoorganoxysilanes of formula (I): wherein R1, R2 et R5 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.

Abstract: The field of the present invention is that of the use of a compound comprising a polyfunctional polyorganosiloxane (abbreviated as POS) bearing, firstly, at least one hydroxyl radical and/or at least one alkoxy radical and, secondly, at least one activated ethylenic double bond, as a coupling agent (elastomeric white filler) in rubber compositions based on isoprene elastomer(s) comprising a white filler as reinforcing filler. The invention also relates to the isoprene elastomer compositions obtained by using the said coupling agent, and to elastomeric articles with a body comprising the abovementioned compositions.

Abstract: The invention relates first to compounds consisting essentially of a functionalised organosilane of formula (R1O)a(R2)3-aSiZ, wherein R1 and R2 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 from the following:an ester-maleamic function and/or an ester-fumaramic function. The invention also relates to methods for producing said compounds, and to their use as white filler-elastomer coupling agents in rubber compositions containing a white filler, especially a siliceous white filler, as a reinforcing filler.

Abstract: 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) (R1O)n(R2)3-aSiZ, wherein R1 and R2 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.

Abstract: The present invention relates to a process for preparing multifunctionalized polyorganosiloxanes (POSs) comprising alkoxyl functional siloxyl units and siloxyl units each having an SH functional group, which consists in introducing the SH functional group by the reaction of H2S on a precursor POS of formula: A—(RXSiO)a—(RYSiO)b—B where R is especially a C1-C6 alkyl radical, X is a C1-C15 alkoxyl radical, Y is a C2-C30 hydrocarbon group which includes an ethylenically unsaturated group from which the SH functionality derives, a is a number ranging from 1 to 150, b is a number ranging from 1 to 150, the number a+b ranging from 2 to 300 and A and B are terminal groups which are selected respectively, from, in particular, on the one hand (R)3SiO— radicals taken alone or as mixtures with (R)2XSiO— and/or R(X)2SiO— and/or (X)3SiO— radicals and on the other hand —Si(R)3 radicals taken alone or as mixtures with —SiX(R)2 and/or —Si(X)2R and/or —Si(

Abstract: Heat-vulcanizable silicone elastomer compositions, well adopted for conversion into mechanically strong flame-retardant protective sheathings/coatings for, e.g., electrical wires and cables, comprise (a) at least one polydiorganosiloxane polymer, (b) a reinforcing filler material and (c) a vulcanizing agent, e.g., an organic peroxide, therefor, and including a fireproofing and mechanical strength-enhancing amount of (d) mica and (e) zinc oxide.