Description

1,3-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol, Hexanedioic Acid, 1,3-Isobenzofurandione and 2,2,4-Trimethyl-1,3-Pentanediol is a high-performance, branched polyester polyol resin, identified by CAS No. 64521-23-9. This specialized polymer is engineered to deliver exceptional durability, chemical resistance, and flexibility in demanding industrial formulations. It is a critical raw material for manufacturers seeking to enhance the performance characteristics of their final products across the coatings, adhesives, and specialty plastics sectors.

Application

• High-Performance Coatings: A key resin component in automotive, industrial, and coil coatings, providing excellent weatherability, hardness, and chemical resistance.
• Polyurethane Adhesives & Sealants: Used as a polyol to formulate strong, flexible adhesives for construction, automotive assembly, and packaging applications.
• Specialty Elastomers and Urethane Castings: Imparts toughness and resilience to cast polyurethane parts, gaskets, and rollers.
• Industrial and Protective Coatings: Serves as a backbone resin for corrosion-resistant primers and topcoats used in marine, pipeline, and infrastructure protection.
• Plasticizers and Modifiers: Acts as a polymeric modifier to improve the flexibility and processing of rigid plastics and composites.
• Ink Resins: Utilized in the formulation of high-quality, durable printing inks for flexible packaging and labels.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol, Hexanedioic Acid, 1,3-Isobenzofurandione and 2,2,4-Trimethyl-1,3-Pentanediol
CAS No.	64521-23-9
Molecular Formula	(C8H6O4 · C5H12O2 · C6H10O4 · C8H4O3 · C8H18O2)x
Molecular Weight	Polymer - varies by grade
Synonyms	Poly(1,3-benzenedicarboxylic acid-co-2,2-dimethyl-1,3-propanediol-co-hexanedioic acid-co-1,3-isobenzofurandione-co-2,2,4-trimethyl-1,3-pentanediol); Isophthalic Acid/Neopentyl Glycol/Adipic Acid/Trimellitic Anhydride/Trimethylolpropane Polymer; Branched Polyester Polyol Resin (Isophthalic/Adipic/Trimellitic based); Polyester Polyol CAS 64521-23-9; Isophthalic Acid-Neopentyl Glycol-Adipic Acid-Trimellitic Anhydride Copolymer; TMP-modified Polyester Polyol
EINECS	Contact for details

Quality Control

Our production of this polyester polyol adheres to strict quality management systems 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 all test 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, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and open flame. Under recommended storage conditions, the product is stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, viscous liquid to pale yellow solid
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 5.0
Viscosity (at 25°C, mPa·s)	Contact for details
Color (Gardner)	≤ 3
Water Content (%)	≤ 0.1
Identification (IR)	Conforms

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