Hydrosize® U9-01

Brand Family Overview

FGLASS™ is a versatile family of fiber sizings and film formers used in the manufacturing of both glass fiber and carbon fiber. It is suitable for both chopped strand and continuous fiber applications.

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Added to other Hydrosize U-series polyurethane dispersion fiber sizing agents, to further enhance the thermal stability and mechanical strength of reinforced composites, especially polyamides.


Nonionic blocked polyisocyanate dispersion

Performance Attributes

This product is used in many applications including the following:

ApplicationProperties Imparted
Fiber Sizingchopped strands, continuous fiber, PA compatible, PPS compatible, thermal stability

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Physical Properties

These physical properties are typical but should not be considered specifications.

AppearanceMilky white liquid
pH7.5 - 9.5
Emulsifier ChargeN/A
Percent Non-Volatile59.0 - 61.0
Recommended pH Range>6.0
Brookfield Viscosity (cps, mPa·s) <500
Spindle Number3

Site of Manufacture (and Product Code)

CIN (U901)