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Print Ink Grade Aldehyde Resin A 81

Printing Ink Grade Aldehyde Resin A 81 is a colorless, transparent to slightly yellow special resin mainly used in solvent based inks, coatings, adhesives and other fields. It has high resistance to yellowing and weather resistance, strong pigment dispersion, fast drying speed, strong adhesion and other characteristics. It is widely used in printing inks such as paper, plastic, metal and other substrates to improve ink adhesion and drying speed;Modification of coatings such as universal colorants and solvent-free coatings to reduce production costs and improve film hardness.

Chemical Name :
Print Ink Grade Aldehyde Resin A 81
Application :
Gravure Inks, Flexographic Inks, Specialty Inks etc.
Product model :
Aldehyde Resin A 81
Appearance :
Colorless, transparent to slightly yellow
brand :
Kabasph

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product introduction

Kabasph® Print Ink Grade Aldehyde Resin A 81 is a high-performance specialty resin specifically formulated for printing ink applications. This modified aldehyde resin delivers exceptional pigment wetting, gloss enhancement, and drying properties, making it an ideal choice for various ink systems. With its excellent solubility and compatibility characteristics, Universal Aldehyde Resin A 81 significantly improves ink formulation performance across multiple printing processes

Print Ink Grade Aldehyde Resin A81

Specification

Appearance	White to light yellow transparent solid
Softening Point	90–105°C
Acid Value	≤3 mgKOH/g
Hydroxyl Value	50-80 mgKOH/g
Solubility	Soluble in esters, ketones, aromatic hydrocarbons, and some alcohols

Chemical Properties

Solubility

Excellent in esters (ethyl acetate, butyl acetate)
Good in ketones (MEK, MIBK)
Limited in alcohols (ethanol, isopropanol)

Compatibility:

Nitrocellulose (NC)
Polyamide resins
Acrylic resins
Chlorinated rubber

Key Advantages

Printing Performance Benefits

Superior Pigment Wetting: Reduces grinding time by up to 30%
Enhanced Color Development: Improves color strength by 15-20%
Excellent Gloss: Delivers 85+° gloss at 60° angle
Fast Setting: Achieves tack-free time of <2 minutes (gravure inks)

Formulation Advantages:

Broad Solvent Compatibility: Works with common ink solvents
Low Viscosity Contribution: Enables high-solid formulations
Thermal Stability: Maintains performance up to 150°C
Alcohol Resistance: Improves rub resistance in flexo inks

Substrate Performance

Excellent Adhesion: To PE, PP, PET, and metalized films
Good Flexibility: Passes 2mm mandrel bend test
High Scratch Resistance: 500+ cycles (Sutherland rub test)

Application and Dosage

Gravure Inks

Packaging Inks: 12-18% loading for flexible packaging
Publication Inks: 8-12% for high-speed printing
Metallic Inks: 15-20% for improved pigment orientation

Flexographic Inks

Water-based Systems: 5-8% as co-resin
Solvent-based Systems: 10-15% for label inks
UV Hybrid Inks: 3-5% for viscosity modification

Specialty Inks

Overprint Varnishes: 15-25% for high-gloss finishes
Security Inks: 10-15% for banknote applications
Conductive Inks: 5-10% as binder resin

Print Ink Grade Aldehyde Resin A 81

Formulation Guidelines

Recommended Usage Levels:

Gravure Inks: 10-20% of total resin content
Flexo Inks: 5-15% of total resin content
Specialty Inks: 5-25% depending on application

Processing Conditions:

Dissolution: Pre-dissolve in solvent at 40-50°C
Milling: Add during pigment dispersion phase
Let-down: Incorporate with other resins at 25-35°C

Storage Recommendations:

• Package: 25kg/bag

• Storage Conditions: Keep in cool, dry place

• Shelf life not less than 12 months and able to be used after validity period if key date still conform to requirements after being tested.

• Handling: Use with adequate ventilation

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