Mold release composition and method of coating a mold core

Details Mold release composition and method of coating a mold core Mold release composition and method of coating a mold core

B - Operations, Transporting

29

C

B29C 33/64 (2006.01)

Patent

CA 2119172

An aqueous reaction mixture having a pH of 4.5 to 5.5 of a multi-functional polydimethyl siloxane emulsified polymer, a methyl triethoxy silane, a mixture of substituted nonyl and octyl phenol derivative surfactants, non-ionic fluorinated alkyl ester surfactant and synthetic ethoxylated amine surfactants, a silanol terminated polydimethyl siloxane and ethanol. The reaction mixture is coated on a mold core surface and cured with heat to form a mold release surface that can be used in excess of twenty times prior to recoating.

Un mélange réactionnel aqueux ayant un pH de 4,5 à 5,5 d'un polymère émulsifié multifonctionnel de polydiméthylsiloxane, d'un méthyltriéthoxysilane, d'un mélange de surfactants dérivés du nonylphénol et de l'octylphénol substitués, d'un surfactant non ionique à base d'ester alkylique fluoré et de surfactants synthétiques à base d'amine éthoxylée, un polydiméthylsiloxane terminé par un silanol et d'éthanol. Le mélange réactionnel est enduit sur la surface d'un noyau de moule et durci à la chaleur pour former une surface de démoulage qui peut être utilisée plus de vingt fois avant qu'il soit nécessaire de l'enduire de nouveau.

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