Wacker VINNOL H15/42 VC/VAc Resin — Low-Viscosity VC/VAc Copolymer for Gravure Inks, Heat-Seal Coatings and Marine Protective Coatings
Wacker VINNOL H15/42 VC/VAc Resin — Low-Viscosity VC/VAc Copolymer for Gravure Inks, Heat-Seal Coatings and Marine Protective Coatings
Full name and product positioning
Product full name: Wacker VINNOL® H 15/42 vinyl chloride-vinyl acetate copolymer resin (commonly known as VC/VAc resin)
VINNOL® H 15/42 is a vinyl chloride-vinyl acetate binary copolymer produced by Wacker (Germany) using suspension polymerization. It contains approx. 86 wt% vinyl chloride and approx. 14 wt% vinyl acetate with a K value of approx. 42, making it a medium-low viscosity grade that dissolves easily and levels well. It is used mainly as a binder for solvent-based coatings, printing inks and heat-seal coatings, and suits formulations that require lower solution viscosity, fast dissolution and good leveling.
Core technical parameters
|
Parameter |
Typical value / range |
|
Appearance |
White powder |
|
Vinyl chloride (VC) content |
Approx. 86 wt% |
|
Vinyl acetate (VAc) content |
Approx. 14 wt% |
|
Chlorine content |
46.9 – 48.1 wt% |
|
K value |
41 – 43 |
|
Solution viscosity (20% MEK solution, 20 °C) |
23 – 33 mPa·s |
|
Flow time (20% MEK solution) |
Approx. 26 s |
|
Volatile content |
< 1.0 wt% |
|
Glass transition temperature Tg |
Approx. 70 °C |
|
Weight-average molecular weight Mw |
30,000 – 40,000 g/mol |
|
Density |
1.37 g/cm³ |
|
Bulk density |
Approx. 750 kg/m³ |
|
Particle size |
< 1.0 mm |
|
Solubility |
Ketones and esters are common solvents (ketones have stronger dissolving power); dichloromethane and 1,2-dichloroethane are true solvents; insoluble in alcohols and aliphatic hydrocarbons; aromatic hydrocarbons can be used in limited blends with true solvents |
|
Food-contact compliance |
Complies with FDA 21 CFR §175.105 and §175.300 (used in the corresponding applications) |
|
Packaging |
25 kg/bag |
Core advantages
· Low K value and low solution viscosity help formulate high-solids, low-viscosity, easy-leveling ink and coating systems
· Good solubility in ketone / ester solvents and fast dissolution make it suitable for high-speed printing processes such as gravure and flexographic printing
· Tough films with good permanent flexibility, abrasion resistance, water resistance, oil resistance and resistance to dilute acids and alkalis and salt water
· Compatible with other VINNOL® series resins, most acrylic resins, ketone resins and some epoxy resins, which facilitates formulation adjustment
· Complies with FDA food-contact requirements, so it can be used in compliant food-packaging inks and coatings
Main application areas
· Core applications: gravure printing inks, heat-seal coatings, paper and film coatings, strippable protective lacquers, marine and industrial protective coatings, inkjet and transfer inks, industrial wood coatings
· Suitable areas: printing inks for plastic films (PET, PVC, OPP, etc.), heat-seal coatings for aluminum foil / paper, low-viscosity high-solids coatings, tinplate and metal primers
· Not recommended: direct blending with alkyd resins, nitrocellulose, polyvinyl acetate or polyvinyl butyral (generally incompatible); avoid pigments containing zinc, cadmium and iron oxides; avoid direct contact with iron containers; systems without added stabilizers are not recommended for long-term outdoor exposure or high-temperature processing