Description

Soybean Oil, Polymer With Phthalic Anhydride, Trimellitic Anhydride And Trimethylolpropane CAS NO 68131-29-3 is a specialized alkyd-type polyester resin derived from renewable soybean oil. This polymer is engineered to provide a unique balance of flexibility, adhesion, and chemical resistance, making it a valuable component in high-performance coating formulations. It is primarily utilized by manufacturers in the paints, coatings, and adhesives industries seeking sustainable and versatile resin solutions.

Application

• Industrial and Protective Coatings: Used as a primary resin or modifier in coatings for metal, wood, and concrete, offering good durability and weather resistance.
• Flexible Packaging Inks: Serves as a binder in printing inks for flexible films and packaging, providing excellent adhesion and gloss.
• Adhesives and Sealants: Imparts flexibility and tack in formulations for construction adhesives, caulks, and sealants.
• Corrosion-Resistant Primers: A key component in primer systems designed to protect substrates from rust and chemical attack.
• Sustainable/Bio-based Coatings: An essential ingredient in the development of eco-friendly coating systems that leverage renewable raw materials.
• Plasticizer and Modifier: Acts as a polymeric plasticizer or compatibility enhancer in various polymer blends and composites.

Basic Information

Item	Detail
Product Name	Soybean Oil, Polymer With Phthalic Anhydride, Trimellitic Anhydride And Trimethylolpropane
CAS No.	68131-29-3
Molecular Formula	Complex Polymer - Contact for details
Molecular Weight	Varies by grade - Contact for details
Synonyms	Soybean oil alkyd resin; Soybean oil-modified polyester; TMP ester of soybean oil-phthalic-trimellitic copolymer; Alkyd resin from soybean oil, phthalic anhydride, trimellitic anhydride, and trimethylolpropane; Polyester polyol from soybean oil; Bio-based alkyd; 68131-29-3; Soybean oil phthalate trimellitate TMP polymer
EINECS	Contact for details

Quality Control

Our production of Soybean Oil Polymer adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance. Each lot is characterized for critical parameters including acid value, hydroxyl value, viscosity, and color. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area away from strong acids and organic solvents. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep container tightly sealed when not in use to prevent skinning or moisture absorption.

Specification

Item	Specification
Appearance	Viscous liquid to solid
Color (Gardner)	≤ 6
Acid Value (mg KOH/g)	≤ 10
Hydroxyl Value (mg KOH/g)	50 - 150
Viscosity (at 25°C)	2,000 - 15,000 mPa·s (varies by grade)
Solid Content (%)	60 - 100 (Solvent-free or in carrier)

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