Product Description

EPOTEC YDPN 638 High-Performance Phenol Novolac Epoxy Resin by Grasim Industries

EPOTEC YDPN 638, manufactured by Grasim Industries Ltd., is a high-functionality, semi-solid phenol novolac-based multifunctional epoxy resin designed for superior performance in demanding industrial environments. Engineered with excellent chemical, mechanical, and thermal resistance, EPOTEC YDPN 638 is ideal for use in protective coatings, adhesives, composites, and electrical applications.

At Chemex Chemicals, an authorized distributor of Grasim Industries (EPOTEC) in India, offering genuine epoxy resin products with expert support and reliable delivery.

Key Features of EPOTEC YDPN 638

 High Functionality (~3.6):
EPOTEC YDPN 638 provides a highly cross-linked three-dimensional network when cured, resulting in outstanding durability and structural integrity.

 Excellent Chemical Resistance:
Due to its phenol novolac backbone and high crosslink density, this resin resists acids, alkalis, solvents, and harsh chemicalsmaking it ideal for use in chemically aggressive environments.

 Superior Mechanical Properties:
The cured system exhibits excellent hardness, abrasion resistance, and mechanical strength, making it suitable for heavy-duty industrial applications.

High Thermal Stability:
YDPN 638 offers exceptional retention of mechanical, chemical, and electrical properties at elevated temperatures.

Versatile Usage:
Its high viscosity allows it to be used as-is or diluted with low-viscosity epoxy resins to tailor performance as needed.

Technical Specifications of YDPN 638

 Appearance: Clear, semi-solid (Visual)

 Colour: 1.0 G max (ASTM D 1544-04)

 Epoxy Equivalent Weight: 175 182 g/eq (ASTM D 1652-04)

 Viscosity @52C: 20,000 50,000 cP (ASTM D 3236-09)

 Hydrolysable Chlorine: 0.1% max (ASTM D 1726-03)

 Epoxide Value: 5.50 5.71 (ASTM D 1652-04)

 Density @25C: 1.18 g/ml (ASTM D 1475-98)

 Water Content: 0.1% max (ASTM E 203-01)

 ECH Content: 10 ppm max (TEC-AS-P-023)

 Non-volatile Content: 100% (ASTM D 1259-06)

Typical Applications of EPOTEC YDPN 638

EPOTEC YDPN 638 is used across a wide range of high-performance applications, including

• Marine and Protective Coatings
• Chemical-Resistant Coatings
• Tank Linings and Storage Vessels
• High-Strength Adhesives
• Coil Coatings
• Potting and Electrical Casting
• Advanced Composite Systems 

Whether used standalone or blended with conventional resins, EPOTEC YDPN 638 enhances the thermal and chemical resistance of the final system.

Why Choose Chemex Chemicals?

Chemex Chemicals is a trusted and authorized distributor of Grasim Industries (EPOTEC) in India. By partnering with us, you gain access to:

• 100% authentic epoxy resins
• Full technical support and documentation (TDS, MSDS)
• Nationwide fast delivery
• Competitive pricing for bulk and retail orders 

We serve a wide range of industries including marine, chemical processing, automotive, electrical, and construction sectors with high-quality epoxy resin solutions.