Saint-Gobain Recherche

Bernard Gicquel

A method of sizing insulating glass fibers, comprising: preparing glass fibers by a high temperature aerodynamic procedure in which glass fibers are drawn out by a gas current and collected in a hood; spraying a size diluted in water onto said glass fibers in said collection hood, said size consisting essentially of an epoxy resin, an amino hardening agent and, as additives, 0.1 to 2.0% of a silane and 0 to 15% of a mineral oil, each calculated on 100 parts of dry resin, wherein said epoxy resin is a condensation product of epichlorohydrin and bisphenol A having a polymerization index n of less than 1 and the equivalent molar mass of the hardening agent is less than 100 g and said size is free of formaldehyde and components which release formaldehyde when baked; and recovering a sized insulating glass fiber product.

Binder and binder-based size for mineral fibers

A size for insulating type glass fibers, comprising an epoxy resin of a glycidyl ether dispersable in water, an amino setting agent having a flash point over 180.degree. C. and, as additives, 0.1 to 2% of silane and 0 to 15% of a mineral oil, each calculated per 100 parts of dry resin.

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Saint-Brice Sous Foret, France

Bernard Gicquel