Wacker VINNOL H 40/50 VC/VAc Resin — High Vinyl Acetate VC/VAc Copolymer for Heat-Seal Coatings, Printing Inks and Wood Lacquers
Wacker VINNOL H 40/50 VC/VAc Resin — High Vinyl Acetate VC/VAc Copolymer for Heat-Seal Coatings, Printing Inks and Wood Lacquers
Full name and product positioning
Product full name: Wacker VINNOL® H 40/50 vinyl chloride-vinyl acetate copolymer resin (VC/VAc resin)
Wacker VINNOL® H 40/50 is a vinyl chloride-vinyl acetate copolymer with a high vinyl acetate content (approx. 63 wt% vinyl chloride, approx. 37 wt% vinyl acetate), produced by suspension polymerization. With good flexibility and solubility it can lower the heat-seal activation temperature and is suitable for processing in ketone-free solvent systems, making it a common binder for heat-seal coatings, printing inks and wood lacquers.
Core technical parameters
|
Parameter |
Typical value / range |
|
Appearance / physical form |
White powder |
|
Chemical type |
Vinyl chloride-vinyl acetate (VC/VAc) binary copolymer |
|
Polymerization process |
Suspension polymerization (H series) |
|
Vinyl chloride (VC) content |
63.0 ± 1.0 wt% |
|
Vinyl acetate (VAc) content |
37.0 ± 1.0 wt% |
|
Hydroxyl content |
— (none) |
|
Acid value |
— (to be confirmed) |
|
K value |
50 ± 1 |
|
Average molecular weight Mw (SEC) |
60 – 80 × 10³ |
|
Solution viscosity (20% MEK, 20 °C) |
55 ± 10 mPa·s |
|
Flow time (ISO 2431, 4 mm cup) |
Approx. 45 s |
|
Particle size |
< 1 mm |
|
Glass transition temperature Tg (DSC) |
Approx. 60 °C |
|
Solubility |
Good solubility in esters, glycol esters/ethers and other weak solvents; can be processed in ketone-free solvent systems |
|
Media resistance |
Good resistance to oils, greases, dilute acid / alkali / salt solutions, aliphatic hydrocarbons (gasoline) and alcohols |
|
FDA 175.300 food-contact compliance |
Yes |
|
Packaging |
Approx. 20 kg/bag |
Core advantages
· High vinyl acetate content gives films greater flexibility and a lower softening temperature
· Can be processed in ketone-free solvent systems, helping to optimize solvent selection and reduce odor
· In heat-seal coatings it can help lower the heat-seal activation temperature with consistent heat-seal strength
· Films are tough and abrasion-resistant with good water resistance and chemical resistance, and resist aliphatic hydrocarbon media
· Good compatibility with ester-soluble nitrocellulose and other resins, which facilitates modification and blending
Main application areas
· Core applications: heat-seal coatings, printing inks (gravure / screen / transfer), wood lacquers, paper and film coating
· Suitable areas: strippable coatings, masonry / road-marking coatings, anti-corrosion and marine coatings, artificial leather coatings, plasticized PVC adhesives
· Not recommended: systems requiring high hydroxyl crosslinking or strong metal adhesion (M grades with carboxyl groups or A series with hydroxyl are recommended); for main coatings exposed to long-term outdoor weathering at high temperature, blending validation is recommended