Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Toyobo VYLONAL ST-5870 Waterborne Polyester Resin

Toyobo VYLONAL ST-5870 is a high-performance waterborne polyester resin from Toyobo’s VYLONAL series, engineered for eco-friendly industrial coatings. It offers excellent gloss retention, chemical resistance, and smooth film formation with low VOC. Ideal for metal and plastic substrates, it ensures stable dispersion and rapid drying without organic solvents.
  • toyobo vylonal st 5870 waterborne polyester resin_fe19b702
  • toyobo vylonal st 5870 waterborne polyester resin_fe19b702

Features Of Toyobo VYLONAL ST-5870 Waterborne Polyester Resin

  1. Low-VOC, water-based formulation compliant with stringent environmental regulations including EU REACH and US EPA standards.

  2. Excellent film-forming capability with balanced hardness and flexibility for durable coating performance.

  3. Superior compatibility with acrylic emulsions, polyurethane dispersions, and common crosslinkers (e.g., aziridines, carbodiimides).

  4. Good hydrolytic stability and storage stability at 5–40 °C for ≥12 months in sealed containers.

  5. Low odor profile and non-flammable handling characteristics enhancing workplace safety.

Typical Applications Of Toyobo VYLONAL ST-5870 Waterborne Polyester Resin

  1. Waterborne industrial maintenance coatings for metal substrates (e.g., machinery, agricultural equipment).

  2. High-performance topcoats for architectural pre-finished metal (PPM) and coil coating primers.

  3. Base resin for eco-friendly wood finishes requiring low migration and good adhesion on hardwood and MDF.

  4. Component in hybrid waterborne systems for automotive under-hood plastic parts coatings.

  5. Formulation backbone for functional protective coatings in electronics enclosures and white goods.

Specifications Of Toyobo VYLONAL ST-5870 Waterborne Polyester Resin

Chemical TypeAliphatic waterborne polyester dispersion
Product FormLiquid dispersion in water
AppearanceOpaque milky white liquid, homogeneous
pH (25 °C)7.5–8.5
Solids Content (wt%)35.0 ± 1.5
Viscosity (mPa·s, 25 °C, Brookfield LVT, Spindle #2, 6 rpm)300–800
Density (g/cm³, 25 °C)1.02–1.05
Minimum Film Formation Temperature (MFFT)22–25 °C


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