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Modifying Resin for Two-Component
Wood Varnishes
SAA-103 is a resinous polyol typically used to enhance the
performance of melamine and isocyanate-crosslinked
coatings. SAA-103 is a copolymer of styrene and allyl
alcohol and contains 80% bound styrene and 20% bound
allyl alcohol on a molar basis. The high primary hydroxyl
content of SAA-103 makes it very reactive with isocyanate
and amino crosslinkers. The high aromatic content makes
SAA-based coatings resistant to water, stains, and
chemicals. The high Tg and low solution viscosity make
SAA-103 ideal for improving the dry time of high solids
coatings without increasing VOCs. SAA-103 is supplied in
easy-to-handle solid pastilles. It is typically dissolved in a
solvent before use, either alone or with other resins.
Unique Chemical Structure: SAA-103 is designed to
have a low hydroxyl content with an even distribution of
functionality throughout the polymer. This means superior
crosslinking ability and coatings with improved hardness,
chemical resistance, and durability.
Low viscosity solutions: SAA-103 produces low
viscosity solutions and is compatible with a wide variety of
common coating solvents including aromatics, ketones, and
esters. SAA-103 is not soluble in 100% mineral spirits or
other aliphatic hydrocarbons.
Excellent Compatibility: SAA-103 is compatible with
most polyester and acrylic resins used in urethane
applications. It produces exceptionally hard, crosslinked
coatings with improved dry times and sandability.
Hard Resinous

Modifying Resin





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