METHOD FOR STABILISING SILICONE ELASTOMER MOULDS

摘要

The invention concerns the use for increasing the life span of moulds made of silicone elastomer crosslinking by polyaddition or polycondensation reaction, of an additive capable of stabilising the silicone elastomer whereof the mould is constituted with respect to materials to be moulded, said additive corresponding the following formula (1) wherein R1 and R2 are linear or branched alkyl radicals or cycloaliphatic radicals having 1 to 40 carbon atoms. Preferably, said additive is methyl laurylthiopropionate. C12H25-S-CH3-CH2-CO-O-CH3. The invention also concerns the corresponding silicone compositions and the resulting moulds.