Sizing composition for glass fibers
AssigneePPG Industries, Inc.
InventorRoy R. Graham
Life of this patent
Estimating the term…
Abstract
A sizing composition is provided for glass fibers to render the glass fibers more dispersible in aqueous solutions. The sizing composition has present an aqueous dispersion of cationic imidazoline; aliphatic, aromatic and/or polymeric ester; and polyethylene in an amount equivalent to an amount in the range of about 0.1 to about 1.5 weight percent of the aqueous sizing composition based on an approximately 30 percent active aqueous dispersion. The sizing composition may also contain, depending on the use, other components such as starch, lubricant, emulsifying agents, wetting agents, plasticizers, biocides and the like.
Claims18
A sizing composition for glass fibers useful in rendering sized glass fibers with improved water dispersibility, comprising:
- about 0.1 to about 1.5 weight percent of the aqueous sizing composition of an aqueous emulsion mixture of cationic imidazoline;
- an aliphatic, aromatic or polymeric ester;
- and a polyethylene when the mixture is around 30 percent active.
In the method of forming chopped glass fiber strand for dispersion in a slush for producing glass paper, which comprises drawing glass streams through orifices in a bushing to form individual glass fibers, moving the fibers away from the bushing, chopping the fiber, applying to the fibers while they are moving and before they are chopped an aqueous sizing solution, comprising 0.1 to about 1.5 weight percent of the sizing composition being an aqueous emulsion having a cationic imidazoline, an aliphatic, aromatic, or polymeric ester;
- and polyethylene with the remaining amount of the sizing composition being water.
In the method of forming chopped glass fiber strands for dispersion in a slush for making glass paper which comprises drawing glass streams through orifices in a bushing to form individual glass fibers, moving the fibers away from the bushing at a high rate of speed and forming them into a strand, applying to the fibers while they are moving at this speed and before the strand formation, an aqueous sizing solution, comprising in weight percent of the total sizing solution about 0.1 to 1.5 weight percent of an aqueous emulsion having cationic imidazoline;
- aliphatic, aromatic, or polymeric ester;
- and polyethylene;
- and about 1 to about 5 weight percent of a starch;
- and about 1 to about 5 weight percent of a hydrogenated vegetable oil;
- and about 0.05 to about 2 weight percent of an emulsifying agent;
- and about 0.5 to about 2 weight percent of a humectant plasticizer;
- and about 40 to 100 percent by weight based on the weight of the hydrogenated vegetable oil of a wetting agent;
- and about 3 milliliters of a biocide to 75 gallons of the sizing composition.
An aqueous sizing composition for glass fibers useful in rendering sized glass fibers with improved water dispensibility, comprising:
- a. about 0.1 to about 1.5 weight percent of the aqueous sizing composition of an aqueous emulsion mixture of cationic imidazoline;
- an aliphatic, aromatic or polymeric ester;
- and a polyethylene when the mixture is around 30 percent active,
- b. about 1 to about 5 weight percent of the aqueous composition of starch,
- c. about 1 to about 5 weight percent of the aqueous size composition of a hydrogenated vegetable oil lubricant,
- d. about 0.5 to about 2 weight percent of the aqueous sizing composition of an emulsifier,
- e. plasticizer in an amount of about 5 to about 50 weight percent based on the amount of starch, and
- f. wetting agent in an amount of about 100 to 150 percent by weight based on the weight of lubricant,
- to yield an aqueous sizing composition having about 0.1 to about 20 weight percent solids.
Dependencies are inferred from the claim text.