Description

9,12-Octadecadienoic acid (9Z,12Z)-, dimer, polymer with 2,2-bis(hydroxymethyl)-1,3-propanediol, 1,3-isobenzofurandione, methyloxirane, oxirane and 2-propenoic acid is a high-performance, multi-functional polymeric resin designed for advanced coating and adhesive formulations. This compound matters because it combines the flexibility and hydrophobicity of a fatty acid dimer with the structural integrity and reactivity of polyols, anhydrides, and acrylates, resulting in a versatile polymer backbone. Industrial chemists and formulators need it to develop products with enhanced durability, chemical resistance, and adhesion properties for demanding environments.

Application

• High-Performance Industrial Coatings: Used as a resin modifier in alkyd, epoxy, and polyurethane coatings for metal, wood, and plastic substrates to improve flexibility and corrosion resistance.
• Advanced Adhesives and Sealants: Serves as a key polymeric component in structural adhesives, pressure-sensitive adhesives (PSAs), and construction sealants, providing strong bonding and elasticity.
• Printing Inks: Incorporated into solvent-based and energy-curable (e.g., UV) printing inks to enhance gloss, adhesion to various films, and rub resistance.
• Composite Materials: Acts as a matrix resin or toughening agent in fiber-reinforced composites for automotive and aerospace applications.
• Protective Linings: Formulated into chemical-resistant linings for tanks, pipes, and flooring in aggressive industrial settings.
• Electrical Insulating Varnishes: Used in wire enamels and impregnating resins for motors and transformers due to its good dielectric properties and thermal stability.

Basic Information

Product Name	9,12-Octadecadienoic acid (9Z,12Z)-, dimer, polymer with 2,2-bis(hydroxymethyl)-1,3-propanediol, 1,3-isobenzofurandione, methyloxirane, oxirane and 2-propenoic acid
CAS No.	143708-42-3
Molecular Formula	Typically a complex polymer; specific formula varies by polymerization degree. Contact for details.
Molecular Weight	Polymer with variable molecular weight distribution. Contact for details.
Synonyms	Linoleic acid dimer, polymer with pentaerythritol, phthalic anhydride, propylene oxide, ethylene oxide, and acrylic acid; Polymeric resin of linoleic acid dimer; Fatty acid dimer alkyd-acrylic hybrid resin; Modified alkyd resin based on linoleic acid dimer; Acrylated alkyd resin; Multi-functional polyol-acrylate copolymer; CAS 143708-42-3
EINECS	Contact for details.

Quality Control

Our 9,12-Octadecadienoic acid dimer polymer is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters such as acid value, hydroxyl value, viscosity, solids content, and color to ensure consistent performance and batch-to-batch reproducibility. Certificates of Analysis (COA) detailing these specifications are available upon request. We adhere to relevant industry standards and can support compliance documentation for your supply chain.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and open flames. Under these conditions, the product is typically stable for 24 months from the date of manufacture. For specific shelf-life information, please refer to the technical data sheet.

Specification

Item	Specification
Appearance	Viscous liquid to solid resin
Color (Gardner)	≤ 6
Acid Value (mg KOH/g)	5 - 25
Hydroxyl Value (mg KOH/g)	50 - 150
Viscosity (at 25°C, cP)	2,000 - 20,000 (Grade dependent)
Non-Volatile Matter (%)	≥ 98.0
Identification (IR)	Conforms to standard

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