Coating compositions for glass fibers

Details Coating compositions for glass fibers Coating compositions for glass fibers

C - Chemistry, Metallurgy

03

C

117/224

C03C 25/10 (2006.01)

Patent

CA 1066966

ABSTRACT Glass fibres for use as reinforcement in cement products are coated with a composition containing a material to protect them against the alkaline environment, which comprises at least one di- hydroxybenzoic acid, preferably 2,5 dihydroxybenzoic acid, and which may also comprise a partially-cured A-stage phenol-formal- dehyde resin of the water-dilutable resole type. A further coat- ing of an epoxy resin may be applied over this composition to pro- tect it from abrasion during handling of the fibres and prepara- tion of the cement products. The coating composition may be ap- plied as a size to the individual filaments immediately after they have been drawn from a bushing, or it may be applied later after the filaments have been combined into a strand.

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