Wacker VINNOL E 15/40 A VC/VAc Resin — Hydroxyl-Containing VC/Acrylate Copolymer for Anti-Corrosion Coatings, Printing Inks and Two-Component Crosslinking

Full name and product positioning Product full name: Wacker VINNOL® E 15/40 A hydroxyl-containing vinyl chloride-acrylate copolymer resin (VC/VAc resin) Wacker VINNOL® E 15/40 A is a copolymer of vinyl chloride and hydroxy-functional acrylate with free hydroxyl groups (approx. 1.8 wt%); it contains approx. 84 wt% vinyl chloride and approx. 16 wt% acrylate monomers. It is produced by emulsion polymerization and offers good pigment wetting. It can be used as a reactive binder and crosslinked with isocyanates, epoxy or amino resins in solvent-based coatings and printing inks. Core technical parameters Parameter Typical value / range Appearance / physical form White powder Chemical type Hydroxyl-containing vinyl chloride-acrylate copolymer (ternary / binary) Polymerization process Emulsion polymerization (E series) Vinyl chloride (VC) content 84.0 ± 1.0 wt% Vinyl acetate (VAc) content None (—) Other monomers (hydroxy acrylate) Approx. 16.0 wt% Hydroxyl content 1.8 ± 0.2 wt% (free hydroxyl) Chlorine content 46.3 – 47.5 wt% K value 39 ± 1 Average molecular weight Mw (SEC) 40 – 50 × 10³ Solution viscosity (20% MEK, 20 °C) 20 ± 5 mPa·s Flow time (ISO 2431, 4 mm cup) Approx. 22 s Particle size < 2.5 mm Glass transition temperature Tg (DSC) Approx. 69 °C Volatile content < 0.5 wt% Solubility Soluble in ketones, esters and similar solvents; good compatibility with alkyd / epoxy / amino / isocyanate resins FDA 175.300 food-contact compliance No Packaging Approx. 20 kg/bag Core advantages ·   Contains approx. 1.8 wt% free hydroxyl groups and can be crosslinked with isocyanates, epoxy or amino resins to form films ·   Emulsion polymerization process gives good pigment wetting and dispersion, suitable for pigmented coating systems ·   Good adhesion to substrates such as plastics, metals and wood, helping to improve coating adhesion ·   Films have good toughness, water resistance and chemical resistance, and resist aliphatic hydrocarbon media ·   Good compatibility with a wide range of coating resins, which facilitates blending and performance adjustment Main application areas ·   Core applications: solvent-based anti-corrosion coatings, plastic / metal / wood coatings, gravure printing inks, pigment preparation, two-component adhesives ·   Suitable areas: artificial leather coatings, coil coatings, inkjet printing, magnetic stripe coatings, crosslinkable reactive coating systems ·   Not recommended: applications requiring FDA 175.300 food-contact certification; unmodified ambient-drying main film-forming systems for high-weatherability outdoor heavy-duty anti-corrosion service (blending validation required)