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High solids content for reduced VOC emissions and improved film build efficiency.
Excellent UV resistance and long-term color stability in outdoor exposure conditions.
Superior compatibility with common crosslinkers including melamine formaldehyde and polyisocyanates.
Good flow and leveling characteristics for smooth, high-gloss finishes.
Enhanced hydrolytic stability compared to conventional acrylic resins in humid environments.
Automotive OEM clearcoats and basecoats requiring high durability and gloss retention.
Industrial maintenance coatings for metal substrates exposed to weathering and chemical stress.
Architectural coatings for exterior façades and aluminum composite panels (ACP).
Plastic coatings for automotive interior trim and consumer electronics housings.
Coil coating systems where rapid cure response and excellent adhesion are critical.
| Chemical Type | Thermosetting acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear, pale yellow to amber liquid |
| Non-Volatile Content (wt%) | 50 ± 1% (by weight, 120°C, 60 min) |
| Acid Value (mg KOH/g) | 8–12 |
| Viscosity (mPa·s, 25°C) | 1,200–1,800 (Brookfield, spindle #3, 20 rpm) |
| Solvent System | Xylene / butyl acetate blend |
| Primary Applications | High-performance thermoset coatings requiring weatherability and chemical resistance |
Q1: What is the primary function of ETERAC 7205-TB-50 in coating formulations?
A: ETERAC 7205-TB-50 is a specialty acrylic resin designed to act as a rheology modifier and film-forming aid, enhancing viscosity control, sag resistance, and substrate wetting—particularly in waterborne industrial and protective coatings.
Q2: Is ETERAC 7205-TB-50 compatible with common waterborne polymer systems?
A: Yes, it demonstrates broad compatibility with acrylic, styrene-acrylic, and vinyl acetate-based emulsions, and is typically added during the let-down stage without requiring pH adjustment or pre-dilution.
Q3: How should ETERAC 7205-TB-50 be incorporated into a formulation?
A: It is recommended to add ETERAC 7205-TB-50 under moderate agitation after the main binder and pigments are dispersed, and prior to addition of defoamers or coalescing agents—typically at low concentrations depending on desired rheological profile and application method.
Q4: Does ETERAC 7205-TB-50 affect gloss or clarity in clear coat applications?
A: When used within recommended dosage ranges, it maintains excellent optical clarity and does not significantly reduce gloss—making it suitable for high-gloss architectural and OEM clear topcoats where appearance consistency is critical.
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E-mail: wangxingqiang@ericwchem.com
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