Phenolic resin system for pultrusion composites

B - Operations – Transporting – 29 – C

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B29C 47/78 (2006.01) C08G 8/10 (2006.01) C08G 8/24 (2006.01) C08L 61/06 (2006.01)

Patent

CA 2345002

A pultrusion process employing a resole-resorcinol resin system, having a much improved pot life and much lower formaldehyde odor over similar existing systems where the resole contains not more than 6 %, preferably not more than 5 %, most preferably not more than about 4 % free formaldehyde. The phenol component of the resole can be substituted by nonyl or p-phenyl phenol to produce products of lower smoke emissions.

L'invention concerne un procédé de pultrusion qui utilise un système de résines à base de résol-résorcinol, possède une durée de vie plus longue et émet une odeur moins forte de formaldéhyde en comparaison aux systèmes existants; la teneur du résol en formaldéhyde libre est inférieure ou égale à 6 %, voire de préférence à 5 % et même, si possible, à 4 %. Le composant phénolique du résol peut être substitué par nonyl ou par p-phényl phénol, et ce pour obtenir des produits à plus faible émission de fumée.

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