Aqueous sizing composition for glass fibers for use on chopped glass fibers
AssigneePPG Industries, Inc.
InventorsDaniel G. Brown, Donald L. Motsinger
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Abstract
An aqueous sizing composition having a cationic lubricant, amide compound, and cationic silicone polymer aqueous emulsion which is used to produce wet chopped sized glass fiber strands or which also has a film former to produce continuous glass fiber strands. The moisture content of the wet chopped glass fiber strands is controlled to within about 9 to about 20 weight percent. The sized wet chopped glass fiber strands have good flowability and when used to produce non-woven glass fiber strand mat, produces mat with good flexibility and tensile strength.
Claims21
An aqueous sizing composition for glass fibers, comprising:
- a. one or more cationic lubricants,
- b. water soluble or dispersible amide selected from the group consisting of monoamides, diamides, melamine, diamides of saturated dicarboxylic acids, carbamides, non-polymeric amine-containing amides and mixtures thereof,
- c. curable silicone polymer in a cationic aqueous emulsion;
- and
- d. water in an amount to give a solids content in the range of about 0.1 to about 5 weight percent wherein the major amount of the solids of the sizing composition is comprised of cationic lubricant and emulsion.
Dependencies are inferred from the claim text.