Sizing agent for glass fibers

US4659753A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Christoph Tiburtius · Neunburg vorm Wald, DE
• Anna Marx · Cologne, DE
• Hans-Ulrich Buschhaus · Krefeld, DE
• Kurt Findeisen · Odenthal, DE

Key dates

• Filing date: Oct 5, 1984
• Grant date: Apr 21, 1987
• Expiry date: Oct 5, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2938
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In an aqueous sizing agent for glass fibers, comprising a bonding agent, a film-former and, optionally, a lubricant, wetting agent and/or other conventional additive, the improvement which comprises including therein a masked polyisocyanate which is water-soluble or dispersible. The sized glass fibers are especially useful in reinforcing polymeric products such as polyamides, giving improved physical properties.