C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 9/06 (2006.01) B29C 33/38 (2006.01) B29C 33/40 (2006.01) C08L 83/04 (2006.01)
Patent
CA 2477492
The invention concerns the use, for improving the life span of moulds made of silicone elastomer crosslinking by polycondensation reaction, of additive capable of stabilizing the silicone elastomer constituting the moulds with respect to materials to be moulded and in particular polyester resins. Said stabilizing agent is based on silica pretreated with a silane. Preferably, it consists of a ground silica-based quartz pretreated with a silane.
La présente invention a trait à l'utilisation, pour améliorer la longévité des moules réalisés en élastomère silicone réticulant par réaction de polycondensation, d'additif capable de stabiliser l'élastomère silicone constituant le moule vis-à-vis des matières à mouler et notamment des résines polyester. Cet agent de stabilisation est à base de silice prétraitée par un silane. Préférentiellement, il s'agit d'un quartz broyé traité avec un silane alkylé.
Heilman Jens
Howe Fabienne
Bluestar Silicones France
Rhodia Chimie
Robic
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