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Medium-oil-length alkyd resin offering balanced drying speed and film flexibility.
Excellent compatibility with nitrocellulose, vinyl resins, and common organic solvents.
Provides superior gloss retention and weather resistance in ambient-cure coatings.
Low volatile organic compound (VOC) formulation supports compliance with regional environmental regulations.
Consistent batch-to-batch performance ensured through rigorous in-process quality control.
General-purpose air-drying industrial maintenance coatings.
Decorative enamel finishes for metal furniture and household appliances.
Undercoats and primers for ferrous and non-ferrous metal substrates.
Wood finishing systems requiring good sandability and recoatability.
Low-VOC decorative architectural paints for interior applications.
| Chemical Type | Medium-oil modified alkyd resin |
| Product Form | Clear to pale yellow viscous liquid |
| Appearance | Homogeneous, transparent, free of sediment |
| Solubility | Compatible with aromatic hydrocarbons, ketones, and esters |
| Acid Value (mg KOH/g) | 8–12 |
| Viscosity (25°C, mPa·s) | 2,500–4,000 (measured in xylene solution) |
| Non-Volatile Content (%) | 60–65 (at 105°C, 60 min) |
| Primary Applications | Air-drying enamels, primers, and wood finishes |
Q1: What is the typical application profile of Sam Chung 3672 Alkyd Resin?
A: Sam Chung 3672 is a medium-oil-length alkyd resin designed primarily for solvent-based industrial maintenance coatings, general-purpose enamels, and decorative finishes where balanced drying speed, gloss retention, and mechanical durability are required.
Q2: Is Sam Chung 3672 compatible with common crosslinkers and additives used in alkyd systems?
A: Yes — it exhibits good compatibility with conventional driers (e.g., cobalt, zirconium, and calcium types), urea-formaldehyde resins, melamine-formaldehyde co-resins, and standard organic solvents such as xylene, mineral spirits, and butyl acetate. Compatibility testing under actual formulation conditions is recommended prior to scale-up.
Q3: How does Sam Chung 3672 perform in terms of drying behavior and film formation?
A: It offers a balanced through-dry and surface-dry profile, supporting good sanding characteristics and recoatability. Final film hardness and flexibility develop progressively over ambient cure periods, with performance enhanced by appropriate drier selection and ambient humidity control.
Q4: Can Sam Chung 3672 be modified or blended with other resin types?
A: Yes — it is commonly blended with acrylics, vinyls, or epoxy esters to tailor flexibility, chemical resistance, or UV stability. Modification via fatty acid exchange or post-reactive grafting is possible but requires careful process control and verification of storage stability.
Q5: What are the key handling and storage recommendations for this resin?
A: Store in tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight and ignition sources. Avoid prolonged exposure to moisture or temperatures above 40 °C. Shelf life is typically 12 months under recommended conditions; inspect for viscosity change or phase separation before use.
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E-mail: wangxingqiang@ericwchem.com
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