Glass yarn sizing composition, method using same and...

C - Chemistry – Metallurgy – 08 – J

Patent

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C08J 5/08 (2006.01) C03C 25/26 (2006.01) C03C 25/36 (2006.01)

Patent

CA 2209278

A glass yarn sizing composition consisting of a solution having a viscosity no higher than 400 cP and including a solvent in an amount of less than 5 wt.%, and at least one heat-polymerisable basic system, is disclosed. Said basic system includes at least 60 wt.% of components having a molecular weight of less than 750 and at least 60 wt.% of a mixture of one or more components having at least one epoxy reactive function, and one or more components having at least one anhydride reactive function. A method using said composition and the resulting yarns coated with said composition are also disclosed.

La présente invention concerne une composition d'ensimage pour fils de verre constituée d'une solution de viscosité inférieure ou égale à 400 cP comprenant moins de 5 % en poids de solvant et comprenant au moins un système de base polymérisable thermiquement, ledit système de base comprenant au moins 60 % en poids de composants de masse moléculaire inférieure à 750 et comprenant au moins 60 % en poids d'un mélange: de composant(s) présentant au moins une fonction réactive époxy, et de composant(s) présentant au moins une fonction réactive anhydride. L'invention concerne également un procédé utilisant cette composition et les fils obtenus selon ce procédé et revêtus de ladite composition.

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