For procurement managers and product development specialists in the chemical industry, understanding the precise properties and applications of key raw materials is fundamental to successful product innovation and manufacturing. Viscosity Resin 203, chemically known as Octyl-Phenolic Tackifying Resin and identified by CAS number 26678-93-3, is a versatile tackifier that plays a crucial role in various polymer-based applications, most notably in adhesives and rubber compounding. This overview provides essential details for those looking to buy this important chemical.

What is Viscosity Resin 203 (CAS 26678-93-3)?

Viscosity Resin 203 is a specialized tackifying resin produced through the polymerization of octylphenol and formaldehyde. Its unique chemical structure contributes to its effectiveness in modifying the properties of polymers, particularly by increasing tack and improving adhesion. As a leading supplier of specialty chemicals, we offer this resin with guaranteed quality and consistency.

Key Properties and Specifications

Understanding the specifications of Viscosity Resin 203 is vital for formulators:

  • Chemical Name: Octyl-Phenolic Tackifying Resin
  • CAS Number: 26678-93-3
  • Molecular Weight: Approximately 236.36
  • Appearance: Typically described as light yellow to light brown transparent particles.
  • Tack and Adhesion: Its primary function is to impart excellent initial tack and sustained tack retention in rubber compounds and adhesive formulations.
  • Compatibility: It exhibits good compatibility with natural rubber (NR), styrene-butadiene rubber (SBR), butadiene rubber (BR), and various other polymers used in adhesives and coatings.
  • Processing Benefits: Functions as a processing aid, aiding dispersion and reducing compound viscosity.
  • Acid Value: Typically ranges from 45-65 mgKOH/g, indicating its acidic nature, which can be important for certain formulations.
  • Softening Point: Usually in the range of 85-100°C, indicating its solid state at room temperature and its behavior under heat.

Primary Applications

The versatility of Viscosity Resin 203 makes it a preferred choice in several demanding industries:

  • Rubber Compounding: It is extensively used in the tire industry to enhance green tack in uncured rubber stocks, crucial for the assembly of tire components. It also improves tack retention in inner liners.
  • Adhesives: It serves as a key tackifier in various adhesive formulations, including tire cements, pressure-sensitive adhesives (PSAs), and hot-melt adhesives, ensuring strong and persistent bonds.
  • Coatings and Inks: In these applications, it can improve adhesion to substrates and modify film properties.
  • Asphalt Modifiers and Polyolefins: It also finds use in modifying asphalt and polyolefins to enhance their adhesion and performance characteristics.

Why Choose Us as Your Supplier?

As a dedicated manufacturer and supplier of Viscosity Resin 203 (CAS 26678-93-3) from China, we are committed to providing:

  • High-Quality Product: Rigorous quality control ensures consistent specifications and performance.
  • Competitive Pricing: We offer competitive price points for bulk purchases.
  • Reliable Supply Chain: Our robust production and logistics ensure timely delivery.
  • Technical Support: Our team is available to assist with product selection and application queries.

Procurement Advice

For companies looking to purchase Viscosity Resin 203 (CAS 26678-93-3), engaging with experienced chemical suppliers is essential. We encourage you to reach out for samples and quotations to evaluate how our product can enhance your formulations. Leveraging the expertise of Chinese chemical manufacturers can provide a strategic advantage in terms of both cost and quality.

In conclusion, Viscosity Resin 203 (CAS 26678-93-3) is a high-performance tackifying resin that offers significant advantages in rubber, adhesives, and other polymer-based applications. Partnering with a reliable supplier ensures you receive a quality product that meets your manufacturing needs.