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Dianal TB-173
Dianal TB-173 is an acrylic bead resin with a high density of hydroxyl functional groups on the polymer backbone.
Dianal TB-173 is a solid-bead acrylic polyol resin, containing a very high density of hydroxyl functional groups on the polymer backbone, with a hydroxyl number of 86 mg KOH per gram resin. This specification makes it unique amid the range of Dianal resins, as this is among the highest of hydroxyl numbers. These functional groups are used to react with isocyanates to create ambient-cure polyurethanes. Dianal TB-173 is soluble in a variety of solvents, including those which are classified by the U.S. EPA to be VOC exempt, such as t-butyl acetate, acetone, and PCTBF. Dianal TB-173 is used in industrial coating applications with acrylic polyols and in automotive refinish coatings. In automotive refinish formulations, it enhances intercoat adhesion between the topcoat and basecoat. TB-173 forms films that are highly resistant to weathering, abrasion, moisture, yellowing due to UV exposure, and attack from dilute acids and bases.
High hydroxyl group content Soluble in a variety of solvents, including those classified as VOC exempt by the U.S. EPA Films formed generally have improved resistance to abrasion, moisture, weathering, and chemical attack Reduces intercoat adhesion failure between basecoats and topcoats
Problems Solved
Poor durability stemming from susceptibility to abrasion and scratches Dissolution due to moisture or chemical attack Delamination or durability issues of coatings, especially in automotive topcoats and basecoats High VOCs in coating formulations
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ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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