Ppg Industries, Inc.

Ppg Industries Ohio, Inc.

David T Melle

James C Watson

Philip L Schell

Narasimhan Raghupathi

Howard J Hudson

George V Sanzero

Chemically treated glass fibers having good processability are useful in producing fiber reinforced polymeric matrices, wherein the glass fibers have controlled wettability and are not detrimental to the weatherability of the fiber reinforced polymeric matrices. The chemically treated fibers have the dried residue of an aqueous chemical treating composition having a bisphenol A polyester film forming polymer compatible with and soluble in the matrix polymer, poly(vinyl acetate) polymeric film former, acryloxy-containing or methacryloxy-containing organo coupling agent in an effective coupling agent amount, cationic fiberous lubricant in an effective lubricating amount, with or without a cationic organic quaternary ammonium salt having alkoxy moieties, and with water in an amount to give a total solid for the aqueous chemical treating composition in the range of about 1 to about 30 weight percent. In addition, the aqueous chemical treating composition can have one or more amino-containing organofunctional silane coupling agents. The amount of the organic quaternary ammonium agent generally is in the range of from 0.05 to around 0.4 weight percent of the aqueous chemical treating composition. When this agent is not in the aqueous chemical treating composition, a secondary application of an antistatic agent is performed. The chemically treated glass fibers can be produced in any form such as chopped strand or continuous strand for combination with polymeric matrices including both filled and unfilled systems for producing reinforced polymeric matrices such as glass fiber reinforced polymeric panels which can be clear, translucent or pigmented.

Chemically treated glass fibers for reinforcing thermosetting polymer

Chemically treated glass fibers having good processability are useful in producing fiber reinforced polymeric matrices, wherein the glass fibers have good wettability and are not detrimental to the weatherability of the fiber reinforced polymeric matrices. The chemically treated fibers have the dried residue of an aqueous chemical treating composition having at least a bisphenol A polyester film forming polymer compatible with and soluble in the matrix polymer, acryloxy-containing or methacryloxy-containing organo coupling agent in an effective coupling agent amount, cationic fiberous lubricant in an effective lubricating amount, with an antistatic agent that is a cationic organic quaternary ammonium salt having alkoxy moieties, and water in an amount to give a total solids for the aqueous chemical treating composition in the range of about 1 to about 30 weight percent. The aqueous chemical treating composition is essentially free of inorganic antistatic agents. In addition, the aqueous chemical treating composition can have one or more strand hardening agents such as melamine formaldehyde resin. The amount of the organic quatenary ammonium antistatic agent generally is in the range of from 0.05 to around 0.4 weight percent of the aqueous chemical treating composition. The chemically treated glass fibers can be produced in any form such as chopped strand or continuous strand for combination with polymeric matrices including both filled and unfilled systems for producing reinforced polymeric matrices such as glass fiber reinforced polymeric panels which can be clear, translucent or pigmented.

Chemically treated glass fibers for reinforcing polymeric materials

Growing community of inventors

Pittsburgh, PA, United States of America

David T Melle