Description

1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,3-Isobenzofurandione, Benzoate 2-Ethylhexanoate is a specialized polymeric plasticizer and modifier derived from a reaction involving trimethylolpropane, phthalic anhydride, and esterifying agents. This compound matters for its ability to impart excellent flexibility, durability, and compatibility in polymer matrices, offering a high-performance alternative to conventional phthalates. It is primarily needed by formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in the production of specialty plastics and inks where enhanced processing and end-product properties are critical.

Application

This versatile polymeric ester finds use in a wide range of industrial applications where permanent plasticization and material enhancement are required.

• Primary Plasticizer for PVC and other Polymers: Imparts low volatility, excellent migration resistance, and long-term flexibility to vinyl compounds, cables, and films.
• High-Performance Coatings and Inks: Acts as a resin modifier in alkyds, polyurethanes, and nitrocellulose lacquers to improve adhesion, gloss retention, and weatherability.
• Adhesives and Sealants: Enhances the flexibility, tack, and low-temperature performance of hot-melt, pressure-sensitive, and polyurethane-based formulations.
• Elastomer and Rubber Compounding: Used as a processing aid and plasticizer to improve flow properties and the elasticity of finished rubber goods.
• Caulks and Putties: Provides permanent flexibility and prevents cracking and shrinkage in building and automotive sealants.
• Specialty Polymer Additive: Serves as a compatibilizer and viscosity modifier in complex polymer blends and composites.

Basic Information

Product Name	1,3-Propanediol, 2-Ethyl-2-(Hydroxymethyl)-, Polymer With 1,3-Isobenzofurandione, Benzoate 2-Ethylhexanoate
CAS No.	103733-68-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Trimethylolpropane Benzoate 2-Ethylhexanoate Phthalate Polymer; Polymeric Plasticizer from TMP, Phthalic Anhydride, Benzoic Acid, and 2-Ethylhexanoic Acid; TMP Benzoate 2-Ethylhexanoate Phthalate; Phthalic Acid, Polymer with Trimethylolpropane, Benzoic Acid, and 2-Ethylhexanoic Acid; Trimethylolpropane Phthalate Benzoate 2-Ethylhexanoate Ester; Poly(trimethylolpropane phthalate benzoate 2-ethylhexanoate); CAS 103733-68-2; Plasticizer 103733-68-2
EINECS	Contact for details

Quality Control

Our production of this polymeric plasticizer adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. While typically supplied as a technical-grade material, specifications for key parameters such as acid value, viscosity, color, and ester content are rigorously controlled. Certificates of Analysis (COA) documenting these parameters 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 away from incompatible materials such as strong acids and oxidizing agents. Ideal storage temperature is between 15°C and 25°C (59°F and 77°F). Keep containers tightly sealed when not in use to prevent moisture absorption and maintain product integrity.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	≤ 1.0
Viscosity @ 25°C (cPs)	Contact for details
Ester Content	≥ 99.0%
Water Content (Karl Fischer)	≤ 0.1%
Specific Gravity @ 20°C	Contact for details

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