Description

Castor Oil/Phthalic/Isophthalic/Pentaerythritol/Tme Resin CAS NO 68513-56-4 is a specialized alkyd resin synthesized from castor oil, phthalic anhydride, isophthalic acid, pentaerythritol, and trimethylolethane (TME). This engineered polymer offers a unique balance of flexibility, chemical resistance, and durability, making it a critical component in high-performance coating formulations. It is primarily sought by manufacturers in the industrial coatings, inks, and adhesives sectors who require resins that deliver superior finish quality and long-term protection.

Application

• Industrial and Protective Coatings: A key binder in high-quality paints and varnishes for metal, wood, and concrete, providing excellent gloss, adhesion, and resistance to weathering and chemicals.
• Printing Inks: Used in the formulation of specialty inks, including overprint varnishes and packaging inks, where it contributes to fast drying, good pigment wetting, and a durable film.
• Adhesives and Sealants: Serves as a tackifying and film-forming agent in certain adhesive systems, enhancing bond strength and flexibility.
• Electrical Insulation Varnishes: Employed in wire enamels and insulating coatings due to its good dielectric properties and thermal stability.
• Marine and Automotive Finishes: Formulated into coatings that require robust resistance to moisture, salt spray, and abrasion.
• Flexible Packaging Coatings: Used in coatings for films and foils, offering the necessary barrier properties and compliance with food contact regulations where applicable.

Basic Information

Product Name	Castor Oil/Phthalic/Isophthalic/Pentaerythritol/Tme Resin
CAS No.	68513-56-4
Molecular Formula	Complex polymer; Contact for details
Molecular Weight	Variable; Contact for details
Synonyms	Alkyd resin based on castor oil, phthalic and isophthalic acids, pentaerythritol, and TME; Modified alkyd resin; Castor oil alkyd; TME-modified alkyd; Isophthalic alkyd resin; Pentaerythritol alkyd; CO/IPA/PE/TME resin; Polyester resin from castor oil
EINECS	Contact for details

Quality Control

Our Castor Oil/Phthalic/Isophthalic/Pentaerythritol/Tme Resin is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as acid value, viscosity, solids content, and color. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat sources and open flames. Under these conditions, the product has a typical shelf life of 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 4
Acid Value (mg KOH/g)	≤ 10
Viscosity (at 25°C)	Z-Z4 (Gardner-Holdt) or as specified
Non-Volatile Matter (%)	70 ± 2
Solvent	Xylene / White spirit blend

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