U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Aqueous size composition with pH regulator

Patent 4656084 Issued on April 7, 1987. Estimated Expiration Date: Icon_subject April 7, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3556754

Resin coated glass fibers and method of producing same through use of an aqueous silane-containing sizing composition whereby hydrolysis and polymerization of the silane is inhibited
Patent #: 4039716
Issued on: 08/02/1977
Inventor: Johnson

Sizing composition and glass fibers sized therewith
Patent #: 4104434
Issued on: 08/01/1978
Inventor: Johnson

Method of forming glass fiber Patent #: 4110094
Issued on: 08/29/1978
Inventor: Motsinger

Inventors

Assignee

Application

No. 06/517739 filed on 07/29/1983

US Classes:

428/378, Coating on discrete and individual rods, strands or filaments252/8.83, Sizing agents (e.g., for weaving yarn, etc.)427/386, Epoxy or polyepoxide containing coating427/387, Silicon compound containing coating427/389.8, Fiberglass base428/429As silicone, silane or siloxane

Examiners

Primary: Page, Thurman K.

Attorney, Agent or Firm

International Classes

C03C 25/26 (20060101)
C03C 25/24 (20060101)

Abstract

Aqueous sizing compositions for glass fibers, comprising both epoxy- and acrylyl- or methacrylyl-functional organosilanes together with fiber-forming polymer and lubricant and pH regulator in a defined amount, are particularly suitable for glass fiber reinforcement for filament winding and pultrusion applications. The use of the pH regulator in the defined amount results in a strand tensile strength of significant improvement.

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