Description

1,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol, 1,2-ethanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol and 1,3-isobenzofurandione is a high-performance, branched polyester polyol resin. This specialized polymer is engineered to deliver a unique balance of flexibility, hardness, and chemical resistance, making it a critical component in advanced coating and adhesive formulations. It is primarily sought after by manufacturers in the industrial coatings, specialty adhesives, and composite materials sectors seeking to enhance product durability and performance.

Application

• High-Performance Industrial Coatings: Used as a key polyol component in polyurethane coatings for automotive, aerospace, and heavy-duty equipment, providing excellent weatherability and chemical resistance.
• Specialty Adhesives and Sealants: Serves as a backbone resin in formulating flexible yet strong polyurethane adhesives for construction, automotive assembly, and composite bonding.
• Elastomers and Casting Resins: Employed in the production of polyurethane elastomers for gaskets, rollers, and industrial parts requiring a specific modulus and toughness.
• Composite Materials: Acts as a matrix resin or modifier in fiber-reinforced plastics (FRP) and other composite systems to improve impact resistance and interlayer adhesion.
• UV-Curable Coating Systems: Can be functionalized for use in radiation-curable coatings, contributing to fast cure times and high crosslink density for hard, mar-resistant finishes.
• Powder Coatings: Utilized as a reactive resin in certain powder coating formulations to achieve low-temperature cure profiles and enhanced flow characteristics.

Basic Information

Product Name	1,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol, 1,2-ethanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol and 1,3-isobenzofurandione
CAS No.	116973-58-1
Molecular Formula	Contact for details
Molecular Weight	Varies (Polymer)
Synonyms	Polyester polyol based on isophthalic acid, trimethylolpropane, and neopentyl glycol; Branched polyester polyol resin; IPA/TMP/NPG Polyol; Isophthalic acid polyester polyol; Poly(neopentyl glycol-isophthalate) polyol; TMP-modified polyester polyol; CAS 116973-58-1; Polyester polyol, branched
EINECS	Contact for details

Quality Control

Our production of this polyester polyol resin adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as hydroxyl value, acid value, viscosity, and color are rigorously tested against internal specifications. A comprehensive Certificate of Analysis (COA) detailing these results is provided with every 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, well-ventilated area at temperatures between 15-25°C (59-77°F). This product is hygroscopic (moisture-sensitive). Keep container tightly sealed when not in use to prevent moisture absorption, which can affect reactivity and properties.

Specification

Item	Specification
Appearance	Clear, viscous liquid to pale solid
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	150 - 250
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 25°C (cPs)	2,000 - 15,000
Water Content (%)	≤ 0.1

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