Emulsion composition and method for use in treating glass fibers
First Claim
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1. A size composition for treating glass fibers comprising:
- (a) an aqueous emulsion of an isotactic carboxylated polypropylene and amorphous carboxylated polypropylene,(b) coupling agent,(c) a film former, and(d) lubricant.
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Abstract
A binder composition and method for using same in sizing compositions for treating glass fibers is provided. The binder composition is an aqueous emulsion containing isotactic carboxylated polypropylene along with amorphous carboxylated polypropylene, base, and surfactant. The isotactic carboxylated polypropylene is incorporated in the emulsion by a method of co-emulsification of the isotactic and amorphous carboxylated polypropylene in a ratio of 1:1 to 1:4 parts by weight along with the base and surfactant. Water is added to the co-emulsified blend to obtain the emulsion with the desired solids content.
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7 Claims
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1. A size composition for treating glass fibers comprising:
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(a) an aqueous emulsion of an isotactic carboxylated polypropylene and amorphous carboxylated polypropylene, (b) coupling agent, (c) a film former, and (d) lubricant. - View Dependent Claims (2, 3, 4, 5)
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6. A size composition for treating glass fibers comprising in percent by weight of the aqueous size composition:
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(a) about 2 to about 15 percent of an aqueous emulsion of an isotactic carboxylated polypropylene and amorphous carboxylated polypropylene, (b) about 0.1 to about 2.0 percent of an amino silane coupling agent, (c) about 0.4 to about 12 percent of a film former selected from the group consisting of homopolymers and copolymers of epoxies, vinyl acetates, polyesters, polyurethanes and acrylic polymers, and (d) about 0.2 to about 4 percent of a lubricant. - View Dependent Claims (7)
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Specification