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