产品说明与参数
Full name and product positioning
Product full name: Wacker VINNOL® P 38 C vinyl chloride-vinyl acetate copolymer resin (VC/VAc resin)
Wacker VINNOL® P 38 C is a binary copolymer resin of vinyl chloride and vinyl acetate (approx. 61 wt% vinyl chloride, 39 wt% vinyl acetate). It is a general-purpose solvent-based binder, used mainly as the binder for surface coatings and printing inks, and can also serve as a modifier for rigid, semi-rigid and flexible PVC. It forms tough films with good chemical resistance and is suitable for industrial protective and corrosion-resistant coating systems.
Core technical parameters
Parameter
Typical value / range
Appearance / physical form
White granular solid (free-flowing, low-dust granules)
Chemical type
Vinyl chloride-vinyl acetate (VC/VAc) binary copolymer
Vinyl chloride (VC) content
Approx. 61 wt%
Vinyl acetate (VAc) content
Approx. 39 wt%
Hydroxyl content
— (no hydroxyl groups; to be confirmed)
Acid value
— (to be confirmed)
K value
— (to be confirmed)
Solution viscosity (20% MEK solution)
— (to be confirmed)
Glass transition temperature Tg (DSC)
— (to be confirmed)
Density
— (to be confirmed)
Solubility
Soluble in ketones (e.g. MEK), chlorinated solvents and ester-based solvent blends
Thermal stability
No significant degradation below approx. 160 °C processing temperature
Volatile content
— (to be confirmed)
Packaging
Approx. 20 kg/bag
Core advantages
· Good chemical resistance to acids, alkalis and aliphatic hydrocarbon media
· High vinyl acetate content gives good solubility in ketone and ester solvents
· Good compatibility with plasticizers, stabilizers and fillers, which facilitates formulation design
· Relatively stable particle size distribution, which helps uniform melting and film formation
· Can be used in PVC modification as well as in protective coatings, adhesives and many other systems
Main application areas
· Core applications: industrial protective coatings, corrosion-resistant linings for chemical storage tanks and pipes, solvent-based adhesive binders, printing inks
· Suitable areas: modifiers for rigid / semi-rigid / flexible PVC, sealants and caulking compounds, abrasion- and solvent-resistant inks for flexible packaging
· Not recommended: applications requiring a food-contact compliance commitment (subject to Wacker's official regulatory documents); not suitable for direct dispersion in waterborne systems