Coating and combined sizing and coating composition for glass fi

Details Coating and combined sizing and coating composition for glass fi Coating and combined sizing and coating composition for glass fi

1974-05-06

1976-02-24

Hayes, Lorenzo B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 296MM, 260739, 260824EP, 260845, 427221, C08L 6106

Patent

active

039403572

ABSTRACT:
Individual glass fibers are coated with a combined sizing and coating composition that includes a zinc salt having a solubility constant (K.sub.s) of not less than 1 .times. 10.sup.-.sup.3 complexed with ammonia as a substitute for all or part of the resorcinol-formaldehyde resin. The preferred combined sizing and coating composition includes as the latex constituent, a styrene-butadiene vinylpyridine terpolymer, as the resin constituent, resorcinol-formaldehyde and zinc sulphate complexed with ammonia and as the coupling agent, a silane selected from amino, amido, chloropropyl, epoxy, ureido-functional silanes. An aqueous solution of the combined sizing and coating composition is prepared and the individual glass fibers are coated shortly after attenuation with this combined sizing and coating composition. The coated individual glass fibers are thereafter gathered into strands and the strands are dried while spaced from each other. The dried strands are thereafter, collected on a forming tube. The coated strands are used as a glass fiber reinforcement for elastomeric products. The zinc salts complexed with ammonia, may also be used in a coating composition for use with glass fibers that have been previously coated with a separate sizing composition that includes a coupling agent.

REFERENCES:
patent: 2904526 (1959-09-01), Uelzmann
patent: 3620701 (1971-11-01), Janetos
patent: 3655612 (1972-04-01), Stella
patent: 3743612 (1973-07-01), Vial

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