Description

Rosin/Isophthalic Acid/Pentaerythritol Alkyd Resin is a specialized, high-performance synthetic resin engineered for demanding industrial coatings. This modified alkyd resin combines the fast-drying and adhesion-promoting properties of rosin with the superior chemical resistance and hardness imparted by isophthalic acid and pentaerythritol. It is essential for manufacturers requiring durable, protective finishes with excellent gloss and weathering characteristics. Key industries that rely on this resin include industrial maintenance coatings, marine paints, automotive refinishes, and heavy-duty machinery finishes.

Application

• High-Performance Industrial Maintenance Coatings for structural steel, factories, and bridges.
• Marine and Offshore Protective Paints offering excellent resistance to saltwater and humidity.
• Automotive Refinish Primers and Topcoats requiring fast drying and high gloss.
• Heavy-Duty Machinery and Equipment Finishes that demand durability and chemical resistance.
• Decorative and Architectural Metal Coatings with superior weathering and UV stability.
• Corrosion-Resistant Primer Formulations for metal substrates.
• High-Solids and Solvent-Borne Coating Systems where performance and application properties are critical.

Basic Information

Product Name	Rosin/Isophthalic Acid/Pentaerythritol Alkyd Resin
CAS No.	68213-61-6
Molecular Formula	Complex Polymer (Contact for details)
Molecular Weight	Varies by grade (Contact for details)
Synonyms	Rosin Modified Isophthalic Alkyd Resin; Pentaerythritol Rosinate Isophthalate; Alkyd Resin, rosin-modified, pentaerythritol ester; Isophthalic Alkyd Resin Modified with Rosin; Penta Alkyd Resin; Rosin Ester Modified Alkyd; High-Performance Modified Alkyd Resin; Industrial Alkyd Coating Resin
EINECS	Contact for details

Quality Control

Our Rosin/Isophthalic Acid/Pentaerythritol Alkyd Resin is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters such as acid value, viscosity, solids content, color, and solubility to ensure consistent performance and batch-to-batch uniformity. Certificates of Analysis (COA) are provided and we can support compliance with relevant industry standards for coatings and resins.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area away from heat sources and open flames. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Viscous liquid to solid resin
Color (Gardner)	≤ 8
Acid Value (mg KOH/g)	≤ 15
Viscosity (Gardner-Holdt)	Z2 - Z6 (or as specified)
Non-Volatile Matter (%)	60 - 70 (or as specified)
Solubility	Clear in specified solvents

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.