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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 viscosity enables high-solids formulation without sacrificing application performance.
Consistent batch-to-batch reproducibility ensured through strict process control and QC testing.
General-purpose air-drying industrial maintenance coatings.
Automotive refinish primers and basecoats requiring fast tack-free time.
Wood finishing varnishes for furniture and cabinetry.
Metal packaging inks and overprint varnishes.
Decorative architectural enamels for interior and exterior use.
| Chemical Type | Medium-oil modified alkyd resin (phthalic anhydride + soybean oil fatty acids) |
| Product Form | Liquid, solvent-based solution |
| Appearance | Clear to pale yellow viscous liquid |
| Solvent System | Xylene / mineral spirits blend |
| Non-Volatile Content (wt%) | 65 ± 1.5% |
| Viscosity (25°C, Ford Cup #4, seconds) | 80–100 |
| Acid Value (mg KOH/g) | 8–12 |
| Primary Applications | Air-drying decorative and protective coatings |
Q1: What is the primary application of Sam Chung 3800-65 Alkyd Resin?
A: Sam Chung 3800-65 is a medium-oil-length alkyd resin designed primarily for solvent-based decorative and protective coatings, including industrial maintenance paints, general-purpose enamels, and wood finishes where good gloss retention, hardness development, and balanced drying performance are required.
Q2: Is this resin compatible with common crosslinkers and additives used in alkyd systems?
A: Yes — Sam Chung 3800-65 exhibits good compatibility with conventional driers (e.g., cobalt, zirconium, and calcium types), common organic solvents (such as xylene, mineral spirits, and butyl acetate), and typical alkyd modifiers like melamine-formaldehyde resins or polyisocyanates in hybrid systems. Compatibility testing under actual formulation conditions is recommended prior to full-scale production.
Q3: How does Sam Chung 3800-65 perform in terms of drying behavior and film formation?
A: This resin provides a well-balanced combination of surface dry and through-dry characteristics, supporting both air-drying and drier-accelerated curing. Films typically develop good early hardness and moderate flexibility, with acceptable resistance to dust pickup during the initial drying phase.
Q4: Can Sam Chung 3800-65 be blended with other resin types?
A: It is commonly blended with acrylic resins, vinyls, or epoxy esters to modify performance attributes such as weather resistance, chemical resistance, or viscosity. Blending ratios depend on the target properties and must be evaluated for stability, compatibility, and final film performance.
Q5: What storage conditions are recommended to maintain product stability?
A: Store in tightly sealed containers in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat or ignition. Under these conditions, the resin maintains its performance characteristics for up to 12 months from the date of manufacture.
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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
