Abstract: A process is described for preparing a storage-stable mixture including an MDT silicone resin containing hydroxyl groups and an organic compound that contains at least one epoxy group.

Abstract: A process is described for preparing a storage-stable mixture including an MDT silicone resin containing hydroxyl groups and an organic compound that contains at least one epoxy group.

Abstract: The present invention relates to an organopolysiloxane composition that can be vulcanized at room temperature into an elastomer that is crosslinked by polycondensation and that does not contain alkyltin-based catalysts which exhibit toxicity problems. The invention also relates to novel polycondensation catalysts having a guanidine structure, in silicone chemistry, and to the uses thereof as catalysts for the organopolysiloxane polycondensation reaction.

Abstract: The present invention relates to an organopolysiloxane composition that can be vulcanized at room temperature into an elastomer that is crosslinked by polycondensation and that does not contain alkyltin-based catalysts which exhibit toxicity problems. The invention also relates to novel polycondensation catalysts having a guanidine structure, in silicone chemistry, and to the uses thereof as catalysts for the organopolysiloxane polycondensation reaction.

Abstract: The present invention relates to an organopolysiloxane composition that can be vulcanized at room temperature into an elastomer that is crosslinked by polycondensation and that does not contain alkyltin-based catalysts which exhibit toxicity problems. The invention also relates to novel polycondensation catalysts having a guanidine structure, in silicone chemistry, and to the uses thereof as catalysts for the organopolysiloxane polycondensation reaction.

Abstract: Tin-free, single-component silicone compositions which are stable with respect to storage in the absence of moisture, and which can be crosslinked into an elastomer by means of polycondensation reactions at ambient temperature and in the presence of water; such elastomers are adherent on various supports and harden rapidly and the silicone compositions contain an alkoxy-functional polyorganosiloxane (POS), a carboxylic acid and/or a carboxylic acid anhydride, and, optionally, a mineral filler of fumed silica type, an alkoxy-functional POS resin and an organometallic compound (containing no tin).

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.