Description

Castor-Soybean Oil/ Phthalic Anhydride/ Pentaerythritol is a specialized alkyd resin intermediate, synthesized from the polycondensation of modified vegetable oils, phthalic anhydride, and pentaerythritol. This compound is valued for its role in producing high-performance, environmentally progressive coating resins with excellent flexibility, adhesion, and durability. It is primarily required by manufacturers in the paints, coatings, inks, and adhesive industries seeking to enhance product performance with bio-based content.

Application

• Alkyd Resin Production: A key raw material for manufacturing short, medium, and long-oil alkyd resins used in industrial and decorative coatings.
• Protective Coatings: Formulation of corrosion-resistant primers and topcoats for metal substrates, machinery, and marine applications.
• Architectural Paints: Used in high-gloss, semi-gloss, and satin finishes for interior and exterior applications, offering good brushability and flow.
• Printing Inks: Serves as a resinous component in solvent-based and oil-based printing inks, contributing to gloss and pigment wetting.
• Adhesives & Sealants: Imparts tack, flexibility, and binding properties in certain adhesive and sealant formulations.
• Wood Finishes: Base for varnishes and wood stains, providing enhanced penetration, water resistance, and a durable film.

Basic Information

Product Name	Castor-Soybean Oil/ Phthalic Anhydride/ Pentaerythritol
CAS No.	68082-17-7
Molecular Formula	Complex polymer mixture; Contact for details
Molecular Weight	Polymer mixture; Contact for details
Synonyms	Alkyd resin, short oil; Modified alkyd resin precursor; Pentaerythritol phthalic alkyd; Soybean-castor alkyd resin; Alkyd resin intermediate 68082-17-7; Phthalic anhydride-pentaerythritol-soybean oil polymer; CASTOR OIL, SULFATED, SODIUM SALT, REACTION PRODUCTS WITH PHTHALIC ANHYDRIDE AND PENTAERYTHRITOL
EINECS	Contact for details

Quality Control

Our alkyd resin intermediates undergo rigorous quality testing to ensure batch-to-batch consistency and compliance with industry standards. Key parameters such as acid value, viscosity, color, and solids content are strictly monitored. Certificates of Analysis (COA) documenting all test results 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/59-77°F). Keep away from heat, sparks, and open flame. As the product is easily oxidized, containers should be kept tightly sealed when not in use to minimize contact with air. Separate from strong oxidizing agents.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 8
Acid Value (mg KOH/g)	≤ 10
Viscosity (Gardner-Holdt)	Z2 - Z5
Solids Content (%)	60 - 70
Identification (IR)	Conforms

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