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High molecular weight acrylic resin offering excellent film-forming capability and mechanical strength.
Outstanding UV resistance and long-term weatherability for durable outdoor performance.
Good compatibility with common solvent-based coating systems and crosslinkers (e.g., melamine, polyisocyanates).
Low yellowing tendency, ensuring color stability in clear and pigmented coatings.
Consistent batch-to-batch reproducibility supported by Evonik’s stringent quality control.
Automotive refinish clearcoats and basecoats.
Industrial maintenance coatings for metal and plastic substrates.
Architectural high-performance façade coatings.
Wood finishing systems requiring gloss retention and hardness.
Plastic coatings for exterior automotive components.
| Chemical Type | Solution polymer of methyl methacrylate, butyl methacrylate, and functional monomers |
| Product Form | Clear, viscous liquid solution |
| Appearance | Colorless to pale yellow, transparent liquid |
| Solvent System | Xylene / butyl acetate blend |
| Non-Volatile Content (NV) | 50 ± 2 wt% |
| Acid Value | 8–12 mg KOH/g |
| Gardner Color | ≤ 2 |
| Viscosity (25°C, DIN 4) | 1,200–1,800 mPa·s |
Q1: What is the primary function of Degalan® M345 in coating formulations?
A: Degalan® M345 is a water-soluble acrylic resin designed primarily as a rheology modifier and film-forming aid. It enhances viscosity control, improves leveling and sag resistance, and contributes to cohesive film formation in waterborne industrial and decorative coatings.
Q2: Is Degalan® M345 compatible with other common waterborne resins and additives?
A: Yes, Degalan® M345 exhibits broad compatibility with acrylic emulsions, vinyl acetate copolymers, polyurethane dispersions, and most standard waterborne additives—including defoamers, wetting agents, and coalescing aids—provided pH remains within the recommended range (typically 7–9).
Q3: How should Degalan® M345 be incorporated into a formulation?
A: It is typically added during the let-down stage under moderate agitation. Pre-dilution with deionized water is recommended to ensure uniform dispersion. Avoid high-shear mixing post-addition to prevent mechanical degradation of the polymer chain.
Q4: Does Degalan® M345 contribute to final film properties such as hardness or flexibility?
A: While not a primary binder, Degalan® M345 influences film integrity by promoting interparticle fusion and enhancing cohesive strength. It generally supports balanced hardness development without compromising flexibility, especially in low-VOC, high-solids systems.
Q5: What storage conditions are recommended for optimal shelf life?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and frost. Prolonged exposure to freezing or excessive heat may affect viscosity stability and performance consistency.
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E-mail: wangxingqiang@ericwchem.com
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