The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 1984
Filed:
Jun. 21, 1982
Balbhadra Das, Allison Park, PA (US);
Carl A Melle, Gibsonia, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
Treated glass fiber strands with improved processing characteristics such as payout and reduced fuzz and fly in forms such as continuous glass fiber strands, chopped glass fiber strands or mats of continuous glass fiber strands, chopped glass fiber strands or mixtures thereof are useful in reinforcing thermoplastic polymers. The treated glass fiber strands have on the glass fibers comprising the glass fiber strand an aqueous treating composition or a dried residue thereof. The aqueous treating composition has a vinyl-containing coupling agent in an amount of at least 0.05 weight percent of the aqueous composition, an epoxidized thermoplastic polymer or copolymer having about 1 to about 12 parts of epoxy to about 100 parts of the copolymer, an organo-reactable silane coupling agent in an unhydrolyzed and/or partially hydrolyzed condition or an interaction product of the epoxidized polymer or copolymer and organo-reactable silane coupling agent, and a glass fiber lubricant. Alternatively, the aqueous sizing composition may also have a crosslinkable film forming polymer. The treated glass fiber strand has an amount of the treating composition of at least about 0.3 weight percent of the treated strand.