Description

Fatty acids, C16-18 and C18-unsatd., polymers with ethylene glycol, maleic anhydride, pentaerythritol and phthalic anhydride is a specialized polymeric resin synthesized from a complex mixture of fatty acids and polyfunctional monomers. This product matters as a high-performance, versatile building block designed to impart flexibility, adhesion, and chemical resistance in demanding industrial formulations. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product durability and performance.

Application

• Alkyd Resins for Industrial & Decorative Coatings: Serves as a key polyol component in air-drying and baking alkyd resins, contributing to film flexibility, gloss retention, and adhesion to various substrates.
• Polyester Polyols for Polyurethane Systems: Used in the formulation of polyester polyols for flexible and rigid polyurethane foams, elastomers, and adhesives, offering a balance of hardness and resilience.
• Adhesive & Sealant Formulations: Imparts tack, cohesion, and resistance to oils and solvents in pressure-sensitive adhesives, construction sealants, and mastics.
• Printing Inks and Overprint Varnishes: Enhances pigment wetting, flow, and final film properties in solvent-based and high-solid printing ink systems.
• Plasticizers and Modifiers for Polymers: Acts as a secondary plasticizer or compatibility enhancer in PVC and other polymer compounds to improve processability and low-temperature performance.
• Corrosion Inhibitive Primers: Used in primer formulations where its film-forming and barrier properties help protect metal surfaces.

Basic Information

Product Name	Fatty acids, C16-18 and C18-unsatd., polymers with ethylene glycol, maleic anhydride, pentaerythritol and phthalic anhydride
CAS No.	68952-28-3
Molecular Formula	Complex polymer mixture; Contact for details
Molecular Weight	Variable polymer distribution; Contact for details
Synonyms	C16-18 and C18 unsaturated fatty acids, polymer with ethylene glycol, maleic anhydride, pentaerythritol and phthalic anhydride; Alkyd resin, fatty acid modified; Polyester resin from tall oil fatty acids, pentaerythritol, phthalic anhydride, maleic anhydride, and ethylene glycol; Fatty acid co-polymer with pentaerythritol, phthalic anhydride, and maleic anhydride; Unsaturated alkylcarboxylic acids, phthalic anhydride, pentaerythritol, ethylene glycol, maleic anhydride polymer; TOFA-based alkyd resin intermediate; Polyester polyol based on C16-C18 fatty acids
EINECS	Contact for details

Quality Control

Our production of this polymeric resin adheres to strict batch-to-batch consistency protocols. Quality is monitored through key parameters including acid value, hydroxyl value, viscosity, and color. Certificates of Analysis (COA) detailing these specifications are provided with each shipment to ensure the material meets your formulation requirements. We operate under a quality management system aligned with industry best practices.

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 strong acids and organic solvents. The product may separate or settle on prolonged storage; gentle warming and mixing may be required before use.

Specification

Item	Specification
Appearance	Viscous liquid to semi-solid
Color (Gardner)	≤ 12
Acid Value (mg KOH/g)	5 - 25
Hydroxyl Value (mg KOH/g)	50 - 150
Viscosity (at 25°C, mPa·s)	2000 - 10000
Solid Content (%)	≥ 99.0

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