VANCRYL® 68

VANCRYL® 68 is a solid acrylic resin primarily used in inks and coatings. Here's a breakdown based on the provided technical datasheet:

Introduction:

• VANCRYL® 68 is a solid acrylic resin designed to offer excellent pigment wetting and viscosity stability, particularly suitable for aqueous gravure and flexographic inks.
• In coatings, it provides attributes such as high gloss, scuff resistance, and hardness.
• It is also effective as a protective colloid in the production of styrene-acrylic copolymer emulsions.

Key Performance Properties:

• Outstanding pigment wetting ensures thorough dispersion of pigments in the ink or coating.
• Excellent transfer properties and hold-out characteristics.
• Low foam generation during application.
• Compatibility with a wide range of vehicles, including most acrylic and maleic resins.

Typical Properties:

• Acid number: 165 mg KOH/g
• Appearance: Solid flake
• Color: Gardner < 2
• Molecular Weight: 20000 (Mw)
• Non-volatile matter: > 99.0%
• Softening Point: 130°C
• Glass Transition Temperature (Tg): 80°C
• VOC (Volatile Organic Compounds): < 1.0%

Starting Point Formulations:

1. Typical Vehicle Formula (30% Solids):
   • VANCRYL® 68 resin: 30.0%
   • Aqua ammonia (28%): 7.0%
   • Water: 63.0%
   • pH: 8.0 - 8.5
   • Viscosity: 1500 – 3000 mPa.s
2. Flexographic Ink Base Grind:
   • Phthalo blue pigment: 32.0%
   • VANCRYL® 68 vehicle (30% Solids): 32.0%
   • Water: 35.0%
   • KNOCKDOWN® 155 defoamer: 1.0%
   • Finished Ink viscosity: 33 s (#2 Zahn)
3. High Gloss Coating:
   • VANCRYL® 989 emulsion: 60.0%
   • VANCRYL® 68 vehicle (30% Solids): 25.0%
   • Michem® Emulsion 32535: 5.0%
   • KNOCKDOWN® 155 defoamer: 1.0%
   • Water: 9.0%
   • pH: 8.5
   • Viscosity: 30 s (#2 Zahn)

Precautions:

• Handle according to standard safety procedures and refer to the Safety Data Sheet for detailed safety information.

Overall, VANCRYL® 68 offers a range of desirable properties for formulating inks and coatings, including excellent pigment wetting, transfer properties, and compatibility with various vehicles. Proper handling and formulation adjustments may be necessary depending on specific application requirements.