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High-gloss finish with excellent clarity and color retention.
Optimized air-drying performance for rapid film formation at ambient conditions.
Superior compatibility with common solvents, pigments, and co-resins including acrylics and melamine formaldehyde.
Good flexibility and impact resistance, minimizing cracking under thermal or mechanical stress.
Low volatile organic compound (VOC) content, supporting compliance with stringent environmental regulations.
Industrial maintenance coatings for metal structures and equipment.
General-purpose decorative enamels for interior and exterior architectural surfaces.
Automotive refinish primers and topcoats requiring balanced hardness and sandability.
Wood finishing systems for furniture and cabinetry demanding rich depth and durability.
Marine-grade topside coatings where weather resistance and gloss retention are critical.
| Chemical Type | Modified short-oil alkyd resin (soya oil-based) |
| Product Form | Liquid, solvent-borne |
| Appearance | Clear to pale amber viscous liquid |
| Primary Applications | Decorative and protective coatings, industrial enamels |
| Key Features | Air-drying, high-gloss, pigment-wetting, low-VOC formulation |
| Recommended Solvents | Aromatic hydrocarbons (e.g., xylene, Solvesso™ 100), ketones (e.g., MEK) |
| Non-Volatile Content (NV%) | 58–62% (by weight, ASTM D1209) |
| Acid Value | 6–9 mg KOH/g (ASTM D1639) |
Q1: What is the primary application field for SM3401-XT-70?
A: SM3401-XT-70 is specifically formulated as a reactive alkyd resin for high-performance solvent-borne industrial coatings, including maintenance paints, marine topcoats, and general-purpose protective finishes where excellent gloss retention, flexibility, and weather resistance are required.
Q2: Is SM3401-XT-70 compatible with common crosslinkers used in alkyd systems?
A: Yes — SM3401-XT-70 is designed to readily react with conventional amino resins (e.g., melamine-formaldehyde) and is also compatible with metal driers and oxidative drying catalysts, supporting both heat-cured and ambient-cure formulations.
Q3: How does SM3401-XT-70 differ from standard long-oil alkyds?
A: SM3401-XT-70 features an optimized fatty acid profile and controlled molecular architecture to deliver enhanced through-dry, improved hardness development, and reduced surface tackiness during cure — making it particularly suitable for demanding applications where film integrity and early handling strength are critical.
Q4: Can SM3401-XT-70 be blended with other resin types?
A: It demonstrates good compatibility with acrylic resins, vinyls, and certain polyurethane dispersions in hybrid systems, enabling formulators to tailor performance attributes such as UV stability, chemical resistance, or application viscosity — though compatibility testing under intended use conditions is recommended.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
