Description

1,4-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol And 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol is a high-performance, branched polyester polyol resin, also known as a neopentyl glycol (NPG) and trimethylolpropane (TMP) co-polyester of terephthalic acid. This specialized polymer is engineered to deliver exceptional durability, chemical resistance, and thermal stability in demanding industrial formulations. It is a critical raw material for manufacturers in the coatings, adhesives, and specialty plastics industries seeking to enhance product performance and longevity.

Application

• High-Performance Industrial Coatings: Used as a polyol component in polyester and polyurethane resin systems for coil coatings, automotive topcoats, and powder coatings, providing excellent weatherability, gloss retention, and hardness.
• Adhesives and Sealants: Serves as a building block for polyurethane-based adhesives, offering strong bonding strength, flexibility, and resistance to hydrolysis and chemicals.
• Specialty Plasticizers and Modifiers: Incorporated into polymer blends to modify flexibility, impact resistance, and processing characteristics without compromising thermal stability.
• Saturated Polyester Resins: A key ingredient for manufacturing saturated polyester resins used in can and container coatings, where flavor neutrality and corrosion resistance are paramount.
• UV-Curable Resins: Can be functionalized for use in UV-curable ink, coating, and 3D printing resin formulations, contributing to rapid cure and high crosslink density.
• Electrical Insulation Materials: Utilized in the production of insulating varnishes and encapsulants for electronic components due to its good dielectric properties and thermal endurance.

Basic Information

Item	Details
Product Name	1,4-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol And 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol
CAS No.	53808-40-5
Molecular Formula	(C8H6O4 · C5H12O2 · C6H14O3)n
Molecular Weight	Polymer - varies by grade
Synonyms	Terephthalic Acid, Polymer with Neopentyl Glycol and Trimethylolpropane; Poly(neopentyl glycol-co-trimethylolpropane terephthalate); NPG/TMP Terephthalate Copolyester; Branched Polyester Polyol; Saturated Copolyester Resin; Terephthalic Acid Copolymer with 2,2-Dimethyl-1,3-propanediol and 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol; Polyester Polyol based on Terephthalic Acid, NPG, and TMP
EINECS	Contact for details

Quality Control

Our production of this branched polyester polyol adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including hydroxyl value, acid value, viscosity, and color index determination, to ensure consistent performance and batch-to-batch reproducibility. Certificates of Analysis (COA) documenting all key specifications are provided with each shipment to support your quality assurance and regulatory compliance needs.

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). This product is hygroscopic (moisture-sensitive); keep containers tightly sealed when not in use to prevent moisture absorption, which can affect product properties.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 25°C (mPa·s)	Contact for details
Color (Gardner)	≤ 2
Water Content (%)	≤ 0.1
Glass Transition Temperature (Tg)	Contact for details

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