Description

Fatty Acids, C16-18 And C18-Unsatd., Branched And Linear, Polymers With Phthalic Anhydride And Trimethylolpropane is a synthetic polymeric ester derived from specific fatty acids, phthalic anhydride, and trimethylolpropane. This specialized chemical is engineered to provide exceptional performance as a versatile intermediate and functional additive, offering a unique balance of properties from its mixed fatty acid and aromatic components. It is primarily sought by formulators in the coatings, inks, lubricants, and polymer modification industries seeking to enhance flexibility, adhesion, and rheological control.

Application

• Alkyd Resin Modifier: Imparts flexibility, gloss retention, and improved weathering resistance in industrial and decorative coatings.
• Polymer Plasticizer: Acts as a secondary plasticizer or compatibilizer in PVC and other polymer systems to enhance processability and low-temperature performance.
• Lubricant Additive: Used as a component in synthetic lubricants and grease formulations to improve viscosity index and lubricity.
• Ink Vehicle Component: Contributes to resin binders for printing inks, aiding in pigment wetting and film formation.
• Adhesive & Sealant Formulation: Serves as a tackifier or rheology modifier to adjust open time and adhesion properties.
• Surface Treatment Agent: Utilized in fiber and metal treatment processes to provide hydrophobic or lubricating surface layers.

Basic Information

Product Name	Fatty Acids, C16-18 And C18-Unsatd., Branched And Linear, Polymers With Phthalic Anhydride And Trimethylolpropane
CAS No.	129870-90-2
Molecular Formula	Complex Polymer (Contact for details)
Molecular Weight	Varies by grade (Contact for details)
Synonyms	Polymeric fatty acid phthalate ester of trimethylolpropane; TMP ester of phthalic anhydride-fatty acid polymer; Fatty acids, C16-18 and C18-unsaturated, branched and linear, polymers with phthalic anhydride and 2-ethyl-2-(hydroxymethyl)-1,3-propanediol; Phthalic anhydride-fatty acid-trimethylolpropane copolymer; Alkyd resin intermediate based on mixed fatty acids; Trimethylolpropane phthalate fatty acid polyester; Synthetic drying oil substitute; Modified alkyd resin polyol
EINECS	Contact for details

Quality Control

Our production of this polymeric ester adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is characterized for key parameters such as 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 compliance needs.

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 oxidizing agents and heat sources to maintain product integrity.

Specification

Item	Specification
Appearance	Viscous liquid to semi-solid
Color (Gardner)	≤ 6
Acid Value (mg KOH/g)	≤ 10.0
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity (at 25°C)	Contact for details
Identification (IR)	Conforms

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