Alkyd Resin
We are a manufacturer based in China. We specialize in providing high-quality Alkyd Resin for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Performance Features
Automotive or industrial coatings: High gloss, hardness,film fullness, miscibility with acrylic resins
Alkyd Resins: Technical Overview
| Category | Specifications |
|---|---|
| Definition | Polyester resins modified with fatty acids, offering versatile film-forming properties |
| Chemical Base | Polyol + Dibasic Acid + Fatty Acid (Oil Modification) |
Classification by Oil Length
| Type | Oil Content (%) | Drying Time | Typical Applications |
|---|---|---|---|
| Short Oil | <40% | Air-dry: 4-8 hrs Bake: 120°C×30min |
Industrial enamels Metal coatings |
| Medium Oil | 40-60% | Air-dry: 2-6 hrs | Architectural paints Trim enamels |
| Long Oil | >60% | Air-dry: 1-4 hrs | House paints Varnishes |
| Oil-Free | 0% | Thermosetting only | High-performance coatings |
Key Technical Properties
| Property | Short Oil | Medium Oil | Long Oil |
|---|---|---|---|
| Viscosity (25°C) | 2.000-5.000 cP | 1.000-3.000 cP | 500-1.500 cP |
| Solvent Content | 40-60% | 30-50% | 20-40% |
| Gloss Retention | Excellent | Good | Moderate |
| Flexibility | Fair | Good | Excellent |
Drying Mechanisms
| System | Catalyst | Drying Process | Film Characteristics |
|---|---|---|---|
| Oxidative | Metal driers (Co/Mn) | Air oxidation of double bonds | Flexible, decorative |
| Thermoplastic | None | Solvent evaporation | Reversible films |
| Thermosetting | Amino resins | Crosslinking at 120-150°C | Hard, chemical-resistant |
Modification Types
| Modifier | Content (%) | Enhanced Properties | Trade-offs |
|---|---|---|---|
| Soybean Oil | 50-70 | Better yellowing resistance | Slower drying |
| Linseed Oil | 40-65 | Faster drying | More yellowing |
| Coconut Oil | 30-50 | Color stability | Reduced flexibility |
| Phenolic | 10-20 | Chemical resistance | Darker color |
Performance Comparison
| Parameter | Alkyd | Acrylic | Polyurethane |
|---|---|---|---|
| Cost Efficiency | ★★★★★ | ★★★ | ★★ |
| Gloss Development | ★★★★ | ★★★ | ★★★★★ |
| Exterior Durability | ★★★ | ★★★★ | ★★★★★ |
| Brushability | ★★★★★ | ★★★ | ★★ |
Industrial Applications
| Sector | Product Examples | Resin Preference |
|---|---|---|
| Architectural | Interior/exterior paints | Long oil alkyds |
| Industrial Maintenance | Storage tank coatings | Medium oil phenolic-modified |
| Automotive | Primer surfacers | Short oil baked alkyds |
| Wood Finishing | Varnishes, stains | Long oil tung/linseed blends |
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