Treated glass fibers and nonwoven sheet-like mat and method
AssigneePPG Industries, Inc.
InventorsEdward C. Hsu, Chester S. Temple
Life of this patent
Estimating the term…
Abstract
Treated glass fibers are provided that are more dispersible in aqueous media. The glass fibers are treated with a composition having a nonionic surfactant and a cationic quaternary ammonium salt surfactant. The composition may be added simultaneously or sequentially with the chopped glass fibers to the aqueous media in which the glass fibers are to be dispersed. Also, glass fibers can be treated with an aqueous treating composition having the composition and produced into wet or dry chopped glass fibers having a length of about 1/16 of an inch to about 3 inches. The treated glass fibers have good dispersibility in aqueous media with or without the addition of dispersing agents.
Claims20
Chopped glass fibers treated during their formation with a chemical treating composition so that the glass fibers have good water solubility and result in improved strength properties of products incorporating the chopped glass fibers, wherein the composition consists essentially of:
- a. nonionic surfactant,
- b. cationic quaternary ammonium salt surfactant, wherein the ratio of the nonionic to cationic surfactants is about 1 to about 99 to about 99 to 1, and
- c. a major amount of water to give an effective total solids content for the composition for treating the glass fibers during their formation.
Chopped glass fibers wherein the glass fibers are treated during their formation with a composition to give the glass fibers better water solubility, wherein the composition consists essentially of:
- a. a nonionic surfactant present in the composition in an amount in the range of about 0.1 to about 5 weight percent of the aqueous treating composition, wherein the nonionic surfactant is selected from the group consisting of polyoxyalkylene surfactants, alkoxylated alkyl phenols, linear substituted alkyl phenols and branch-chain substituted alkyl phenols, alkoxylated aliphatic alcohols, carboxylic esters, fatty acid esters of either mono or di glycerides of fatty acids, fatty acids and/or esters, glycol esters of fatty acids, anhydrosorbitol esters, and alkoxylated anhydrous sorbitol esters and alkoxylated natural fats, oils and waxes, polyalkylene oxide block copolymers and polysiloxane-polyoxyalkylene copolymers and mixtures thereof,
- b. cationic quaternary ammonium salt surfactant present in the aqueous chemical treating composition in an amount in the range of about 0.1 to about 5 weight percent of the aqeuous treating composition and selected from the group consisting of quaternary ammonium salts having the formula ##STR3## where one or more but not all of the R, R.sub.1, R.sub.2, R.sub.3 can be selected from the compounds such as stearyl, tallow, cetyl, lauryl, myristyl, alkyl, alkyls with about 8 to about 18 carbon atoms, tetradecyl, dodecyl phenyl, alkyl phenyl, isohexadecyl, and where the other Rs are lower alkyls having carbon atoms up to and including 6 or more alkyl phenyls and where X is an anionic group selected from chloro, fluoro, ido, bromo, hydroxyl, nitrate, sulfate, phosphate and toluene sulfonate, and wherein the nonionic and cationic surfactants are present in the composition as a blend in a ratio of about 3:1 to about 1:3,
- c. a major amount of water to give an effective total solids content for the composition for treating glass fibers during their formation.
Dependencies are inferred from the claim text.