Description

1,3-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol is a high-performance, linear polyester polyol derived from isophthalic acid and neopentyl glycol. This polymer is valued for its excellent chemical resistance, hydrolytic stability, and ability to impart hardness and durability to final formulations. It is a critical raw material for manufacturers seeking to produce premium coatings, adhesives, and specialty elastomers with enhanced performance characteristics.

Application

• High-Performance Coatings: Serves as a key polyol component in polyurethane coatings for automotive, industrial, and marine applications, providing excellent gloss retention, chemical resistance, and weatherability.
• Adhesives and Sealants: Used in formulating polyurethane-based adhesives and sealants that require strong bonding, flexibility, and resistance to moisture and environmental stress.
• Elastomers and Castables: A fundamental building block for manufacturing polyurethane elastomers, offering a balance of toughness, abrasion resistance, and low-temperature flexibility.
• Powder Coatings: Employed in carboxyl-functional polyester resins for hybrid and TGIC-free powder coating systems, contributing to flow, leveling, and overall film properties.
• Synthetic Leather and Textile Finishes: Used in coatings for synthetic leather (PU leather) and textile finishes to achieve desired softness, durability, and surface feel.
• Industrial Resins: Acts as a modifier in unsaturated polyester resins (UPR) and other composite matrices to enhance specific mechanical and chemical resistance properties.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol
CAS No.	26811-89-2
Molecular Formula	(C8H6O4 • C5H12O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(isophthalate-co-neopentyl glycol); Isophthalic Acid-Neopentyl Glycol Polyester Polyol; IPA-NPG Polyester Polyol; Poly(neopentyl glycol isophthalate); NPG-IPA Polyol; Polyester Polyol from Isophthalic Acid and Neopentyl Glycol; Linear Polyester Diol (IPA/NPG); 2,2-Dimethyl-1,3-propanediol polymer with isophthalic acid
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 controlled. A comprehensive Certificate of Analysis (COA) detailing the specifications and test results is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). Keep away from heat sources and open flame. Under recommended storage conditions, the product is stable for extended periods. For long-term storage, consider under an inert atmosphere to prevent moisture absorption and oxidation.

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 (cPs)	Contact for details
Color (Gardner)	≤ 2
Water Content (%)	≤ 0.1
Glass Transition Temp (Tg)	Contact for details

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