Description

Fatty acids, C18-unsatd., dimers, polymers with isophthalic acid, linoleic acid, pentaerythritol, tall-oil fatty acids, trimellitic anhydride and trimethylolpropane CAS NO 129811-16-1 is a high-performance, multi-component polymeric resin designed for demanding industrial applications. This complex polymer offers exceptional durability, adhesion, and chemical resistance, making it a critical raw material for advanced coating and adhesive formulations. It is primarily utilized by manufacturers in the paints & coatings, industrial adhesives, and specialty chemical industries seeking to enhance product performance and longevity.

Application

• High-Performance Industrial Coatings: As a key resin binder in alkyd and polyester-based coatings for metal substrates, machinery, and automotive parts, providing excellent gloss, hardness, and weather resistance.
• Heavy-Duty Adhesives & Sealants: Used in formulating structural adhesives, laminating adhesives, and construction sealants that require strong bonding, flexibility, and resistance to environmental stress.
• Protective & Marine Coatings: A vital component in anti-corrosive primers and topcoats for ships, offshore platforms, and industrial infrastructure, offering protection against moisture and chemicals.
• Printing Inks: Serves as a resinous vehicle in specialty printing inks, contributing to fast drying times, good pigment wetting, and adhesion on various substrates.
• Can & Coil Coatings: Employed in formulations for coating metal coils and food/beverage cans, where excellent formability, adhesion, and resistance to contents are required.
• Wood Finishes: Used in high-quality varnishes and wood stains to enhance durability, water resistance, and aesthetic appeal.

Basic Information

Product Name	Fatty acids, C18-unsatd., dimers, polymers with isophthalic acid, linoleic acid, pentaerythritol, tall-oil fatty acids, trimellitic anhydride and trimethylolpropane
CAS No.	129811-16-1
Molecular Formula	Complex Polymer (Contact for details)
Molecular Weight	Variable (Polymer) (Contact for details)
Synonyms	Polymeric resin of tall oil fatty acids, isophthalic acid, trimellitic anhydride, pentaerythritol, and trimethylolpropane; Modified alkyd resin; Tall oil fatty acid polyester resin; TOFA-based polymeric resin; C18 unsaturated fatty acid dimer/polymer resin; Isophthalic acid modified alkyd; Polyester resin from tall oil; Multi-functional polyester polyol resin
EINECS	Contact for details

Quality Control

Our production of this polymeric resin adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as acid value, hydroxyl value, viscosity, and color are rigorously tested against internal specifications. Certificates of Analysis (COA) documenting these results are provided with every shipment. We are committed to meeting the quality expectations of the coatings and adhesives industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Keep away from heat, sparks, and open flame. This product is compatible with strong acids and organic solvents but should be stored separately from strong oxidizing agents. Ensure containers are kept tightly sealed when not in use to prevent skinning or moisture absorption.

Specification

Item	Specification
Appearance	Viscous liquid to solid resin
Color (Gardner)	≤ 8
Acid Value (mg KOH/g)	5 - 15
Hydroxyl Value (mg KOH/g)	50 - 120
Viscosity (at 25°C, cP)	2000 - 10000 (Grade dependent)
Solids Content (%)	≥ 99
Flash Point (°C)	> 200

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