Abstract: A silicone composition is described that includes components having SiH/SiOH groupings and that can be polymerized/cross-linked by a dehydrogenative condensation reaction in the presence of a zinc catalyst and requiring a low activation temperature.

Abstract: A compound having a guanidine structure and uses thereof as organopolysiloxane polycondensation catalysts are described.

Abstract: A compound having a guanidine structure and uses thereof as organopolysiloxane polycondensation catalysts are described.

Abstract: A method is described for sealing and assembling, pointing and/or coating a substrate by means of silicon elastomers prepared using silicon compositions that do not contain any metal catalyst such as, for example, tin, and cross-linking by polycondensation reactions in the presence of water (for example, ambient moisture).

Abstract: A method is described for coating a flexible medium made from fabric, paper, polyvinyl chloride, polyester, polypropylene, polyamide, polyethylene, polyurethane, non-woven fibreglass fabrics, or polyethylene terephthalate with a tin-free elastomer silicon composition that can be cross-linked by polycondensation.

Abstract: A method is described for sealing and assembling components of a drive train by means of silicon elastomers prepared using silicon compositions that do not contain any metal catalyst such as, for example, tin, and cross-linking by polycondensation reactions in the presence of water (for example, ambient moisture).

Abstract: A silicone composition is described that includes components having SiH/SiOH group and that can be polymerized/cross-linked by a dehydrocondensation reaction in the presence of a catalyst such as an iron-based complex or salt, requiring a low activation temperature.

Abstract: A silicone composition is described that includes components having SiH/SiOH groupings and that can be polymerized/cross-linked by a dehydrogenative condensation reaction in the presence of a non-metal tri- or tetrasubstituted non-silylated guanidine catalyst and requiring a low activation temperature.

Abstract: The invention relates to a method for preparing carbene by means of deprotonation of a precursor salt using a strong base. A purpose of the invention is to enhance the synthesis of carbenes, i.e. to simplify same, to make said synthesis more economical and to obtain a liquid or solid, stable and pure form consitituting a catalytic system that is easy to store and use and that has a higher efficiency, higher yield and higher selectivity than carbene catalysts of the prior art. In order to do so, the method comprises deprotonation in a solvent including an alcohol. The invention also relates to an alcohol-containing solution and carbene, and to a solid that can be obtained from the solution, e.g. by means of sublimation.

Abstract: A method is described for coating a flexible medium made from fabric, paper, polyvinyl chloride, polyester, polypropylene or polyethylene terephthalate with a tin-free elastomer silicon composition that can be cross-linked by polycondensation.

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 and also to novel organopolysiloxane polycondensation catalysts.

Abstract: A silicone composition is described that includes components having SiH/SiOH groupings and that can be polymerized/cross-linked by a dehydrocondensation reaction in the presence of a non-metal catalyst such as non-silylated, pentasubstituted guanidine, requiring a low activation temperature.

Abstract: Hydroxyaromatic aldehydes are prepared by oxidation of a corresponding mandelic derivative carried out in a basic medium and in the presence of a catalytic system containing at least two metal elements.

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 and also to novel organopolysiloxane polycondensation catalysts.

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 article having antisoiling properties and intended to be employed in aquatic uses, in particular marine uses, and also to a method for delaying the growth of aquatic organisms on submersible or semi-submersible structures.

Abstract: The invention relates to novel compounds with a guanidine structure, and more particularly nontoxic compounds with a silylated guanidine structure.

Abstract: RTV-organopolysiloxane compositions are crosslinkable by polycondensation and are devoid of alkyltin-based catalysts; novel organopolysiloxane polycondensation catalysts are useful therefor.

Abstract: RTV-organopolysiloxane compositions are crosslinkable by polycondensation and are devoid of alkyltin-based catalysts; novel organopolysiloxane polycondensation catalysts are useful therefor.

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 and also to novel organopolysiloxane polycondensation catalysts.