Wacker VINNOL H15/45M VC/VAc Resin — Carboxyl-Containing Suspension-Process Terpolymer for Heat-Seal Coatings, Metal Anti-Corrosion and Inks
Wacker VINNOL H15/45M VC/VAc Resin — Carboxyl-Containing Suspension-Process Terpolymer for Heat-Seal Coatings, Metal Anti-Corrosion and Inks
Full name and product positioning
Product full name: Wacker VINNOL® H15/45M carboxyl-containing vinyl chloride-vinyl acetate terpolymer resin
This grade is a carboxyl-containing vinyl chloride-vinyl acetate-dicarboxylic acid terpolymer resin produced by Wacker using suspension polymerization, with a K value of 47–49, making it a medium-high molecular weight grade. Its carboxyl content gives excellent adhesion to metal substrates, while the suspension process provides good water resistance and chemical resistance. It is a widely used grade in heat-seal coatings and metal anti-corrosion coatings.
Core technical parameters
|
Parameter |
Typical value / range |
|
Appearance |
White powder |
|
Vinyl chloride (VC) content |
Approx. 84 wt% |
|
Vinyl acetate (VAc) content |
Approx. 15 wt% |
|
Dicarboxylic acid content |
Approx. 1 wt% |
|
Acid value |
5.5–7.5 mg KOH/g |
|
K value |
47–49 |
|
Dynamic viscosity (20% MEK solution, 20 °C) |
50–70 mPa·s |
|
Chlorine content |
47.1–48.3 wt% |
|
Volatile content |
<1.0 wt% |
|
Flow time (20% MEK solution) |
Approx. 50 s |
|
Density |
1.36 g/cm³ (23 °C) |
|
Bulk density |
Approx. 750 kg/m³ |
|
Glass transition temperature (Tg) |
Approx. 74 °C |
|
Weight-average molecular weight (Mw) |
60,000–80,000 g/mol |
|
Particle size |
<1 mm |
|
Solubility |
Good solubility in ketone solvents; low-viscosity formulations can reduce solvent consumption |
|
Packaging |
25 kg coated three-layer paper bag |
|
Food-contact compliance |
Complies with FDA 175.300 |
Core advantages
· Suspension process gives good water resistance and chemical resistance; coatings are not easily attacked by water, dilute acids and alkalis or salt water
· Carboxyl functional groups give excellent adhesion to metal substrates; can be used directly in metal primers and heat-seal coatings
· Moderate-to-low viscosity can reduce solvent consumption at the same solids content, helping to lower formulation solvent costs
· Can be crosslinked with isocyanates, polyaziridines or polycarbodiimides, helping improve coating heat resistance and chemical resistance
· Broad suitability for heat-sealing; good sealing performance with polar substrates such as aluminum foil, PVC and PET
Main application areas
· Core applications: heat-seal coatings (aluminum foil / PVC / PET), metal anti-corrosion primers, can coatings, coil coatings
· Suitable areas: automotive coatings, marine and protective coatings, gravure / screen inks, industrial adhesives, film lamination
· Not recommended: pure metal bonding systems without carboxyl modification (insufficient adhesion); long-term outdoor exposure formulations without UV stabilizers; non-heat-seal coatings on high-VAc flexible films