Modified PVB Resin for Coatings & Inks

Modified PVB Resin for Coatings & Inks (Polyvinyl Butyral Resin)
CAS:63148‑65‑2; EINECS:272‑808‑3

Note: Polymer with no fixed single molecular formula; Reference for repeat units: (C₁₆H₂₈O₅)ₙ. Chemical modification adjusts hydroxyl and butyral groups for coating‑ink system.

### Basic Parameters
‑ Appearance: White to off‑white free‑flowing powder with no obvious odor
‑ Density (25℃):1.08‑1.12 g/cm³
‑ Vitrification temperature Tg:60‑72℃
‑ 10% Ethanol solution viscosity: multi‑viscosity grades (low, medium, high viscosity)
‑ Butyral content:68‑80%; Residual acetyl group:0‑3%
‑ Volatile Matter: ≤2.0%

### Solubility
Insoluble in water. Easily soluble in ethanol, isopropanol, alcohol ethers, esters. High compatibility with nitro paints, epoxy resins, alkyd acids, phenolic resins.

### Storage
Sealed store in cool, dry, ventilated warehouse; Moisture‑proof, light‑proof, away from heat and strong oxidizers; Prevent dust accumulation.
Original sealed shelf life:12 months. Can be reused after re‑inspection when expired.

### Product Introduction
Specially‑modified PVB resin is thermoplastic polymer resin. Optimized pigment wetting‑dispersion, solvent solubility and resin compatibility. It forms transparent flexible film with excellent adhesion on metal, glass, ceramic and plastic substrates. Coating film owns good alkali resistance, oil resistance and low‑temperature impact resistance. Active hydroxyl groups can cross‑link with epoxy, isocyanate, amino resins.

### Main Applications
1. **Ink Industry (Core Use)**
Gravure ink, heat transfer ink, water pine paper ink, ceramic decal ink as film‑forming adhesive. Good pigment wettability & uniform dispersion, high printing clarity, low ash residue after burning.
Special binder for metal & plastic printing ink, improve adhesion and flexibility.

2. **Coatings Industry**
Metal primers, mask coatings, ceramic decorative paper, electronic pastes and other fields.

### Product Advantages
✅ Excellent pigment wetting and dispersion performance
✅ Good adhesion to metal, glass, ceramic, plastic substrates
✅ Good compatibility with many kinds of resins
✅ Flexible transparent film, alkali‑proof, oil‑proof, low‑temperature impact‑resistant

### Safety Notice
Avoid dust inhalation. Wear dust mask and protective gloves during operation. Keep far from strong oxidizing agents.