Hydrosize® U1-03

Brand Family Overview

NatureShield® products from Michelman are environmentally friendly emulsions and natural oil blends designed to improve the weatherability of exterior surface coatings by providing water resistance and good water bead to wood and concrete. They enhance the natural pattern of wood and can serve as an effective additive in improving the durability and aesthetics of stone based substrates.

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Designed to be a fiber sizing coating with excellent adhesion and abrasion resistance.


Phenoxy modified polyurethane dispersion

Performance Attributes

This product is used in many applications including the following:

ApplicationProperties Imparted
Fiber Sizingchopped strands, impact resistance, PA compatible, PET/PBT compatible

See more products recommended for Fiber Sizing.
Physical Properties

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

AppearanceMilky white dispersion
pH6.5 - 8.5
Emulsifier ChargeAnionic / Nonionic
Percent Non-Volatile49.0 - 52.0
Recommended pH Range>6
Brookfield Viscosity (cps, mPa·s) 250 - 700
Spindle Number3

Site of Manufacture (and Product Code)

CIN (U103)