Wacker VINNOL H 30/48 M VC/VAc Resin — Carboxyl-Containing VC/VAc Terpolymer for Metal Adhesion, Anti-Corrosion Coatings and Heat-Seal Coatings
Wacker VINNOL H 30/48 M VC/VAc Resin — Carboxyl-Containing VC/VAc Terpolymer for Metal Adhesion, Anti-Corrosion Coatings and Heat-Seal Coatings
Full name and product positioning
Product full name: Wacker VINNOL® H 30/48 M carboxyl-containing vinyl chloride-vinyl acetate terpolymer resin (VC/VAc resin)
Wacker VINNOL® H 30/48 M is a carboxyl-containing vinyl chloride-vinyl acetate-dicarboxylic acid terpolymer (approx. 70 wt% vinyl chloride, approx. 29 wt% vinyl acetate, approx. 1 wt% dicarboxylic acid) produced by suspension polymerization. It offers good metal adhesion and can be crosslinked with isocyanates and similar curing agents. With a high vinyl acetate content and good ester solubility, it is a common binder for metal anti-corrosion and heat-seal coatings.
Core technical parameters
|
Parameter |
Typical value / range |
|
Appearance / physical form |
White powder |
|
Chemical type |
Carboxyl-containing vinyl chloride-vinyl acetate-dicarboxylic acid terpolymer |
|
Polymerization process |
Suspension polymerization (H series) |
|
Vinyl chloride (VC) content |
70.0 ± 1.0 wt% |
|
Vinyl acetate (VAc) content |
29.0 ± 1.0 wt% |
|
Other monomers (dicarboxylic acid) |
Approx. 1.0 wt% |
|
Acid value |
7.0 ± 1.5 mg KOH/g (TDS: 5.5 – 8.5) |
|
Hydroxyl content |
— (none) |
|
K value |
48 ± 1 (TDS: 47 – 49) |
|
Average molecular weight Mw (SEC) |
60 – 80 × 10³ |
|
Solution viscosity (20% MEK, 20 °C) |
45 ± 10 mPa·s (TDS: 35 – 55) |
|
Flow time (ISO 2431, 4 mm cup) |
Approx. 45 s |
|
Particle size |
< 1 mm |
|
Glass transition temperature Tg (DSC) |
Approx. 65 °C |
|
Solubility |
Good solubility in ester solvents; can be processed in ketone-free solvent systems |
|
Crosslinking reactivity |
Crosslinkable with isocyanates, polyaziridines, polycarbodiimides and similar curing agents |
|
FDA 175.300 food-contact compliance |
Yes |
|
Packaging |
Approx. 20 kg/bag |
Core advantages
· Contains approx. 1 wt% carboxyl functional groups, giving good adhesion to metal, mineral and glass substrates
· High vinyl acetate content provides good solubility in pure ester solvents, enabling ketone-free processing
· Films are flexible and durable, abrasion-resistant, with good water resistance and chemical resistance, and resist aliphatic hydrocarbon media
· Can be crosslinked with isocyanates and similar curing agents, helping to improve chemical resistance and surface hardness
· In heat-seal coatings it can help lower the heat-seal temperature while balancing heat-seal strength and flexibility
Main application areas
· Core applications: metal anti-corrosion coatings, coil coatings, can coatings, automotive coatings, heat-seal coatings
· Suitable areas: metal adhesives, marine coatings, road-marking / floor coatings, crosslinking component of reactive coatings, pigment preparation
· Not recommended: systems sensitive to free acid value or requiring long-term contact with strongly alkaline media; for direct waterborne dispersion, emulsion-type products should be selected instead; small-scale trials before use are recommended