Description

1,4-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol is a high-performance polyester polyol, a key intermediate polymer derived from terephthalic acid and neopentyl glycol. This compound is valued for its excellent chemical resistance, hydrolytic stability, and ability to impart hardness and durability to final formulations. It is primarily sought after by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing specialty polyurethanes and unsaturated polyester resins.

Application

• High-Performance Coatings: As a critical building block for polyester and polyurethane resins used in automotive, industrial, and coil coatings for superior weatherability and gloss retention.
• Polyurethane Elastomers & Adhesives: Serves as a rigid segment polyol to enhance the mechanical strength, abrasion resistance, and thermal stability of cast elastomers, adhesives, and sealants.
• Unsaturated Polyester Resins (UPR): Used in the formulation of corrosion-resistant fiberglass reinforced plastics (FRP) for tanks, pipes, and marine applications.
• Synthetic Leather & Textile Coatings: Imparts durability, flexibility, and a fine finish in polyurethane formulations for artificial leather and fabric coatings.
• Plasticizers & Modifiers: Acts as a polymeric plasticizer or modifier to improve the flexibility and low-temperature performance of PVC and other polymers.
• Ink & Toner Resins: Utilized in the production of specialty resins for printing inks and toners, contributing to fast drying and strong adhesion properties.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol
CAS No.	26590-78-3
Molecular Formula	(C12H14O4)n
Molecular Weight	Variable (Polymer)
Synonyms	Poly(neopentyl glycol terephthalate); Terephthalic Acid-Neopentyl Glycol Copolymer; Poly(2,2-dimethyl-1,3-propanediol terephthalate); NPG Terephthalate Polyester Polyol; Poly(NPG Terephthalate); Poly(neopentyl terephthalate); Polyester polyol from TPA and NPG; Terephthalic acid polymer with neopentyl glycol
EINECS	Contact for details

Quality Control

Our production of this polymer adheres to strict quality management systems to ensure batch-to-batch consistency. Key parameters such as hydroxyl value, acid value, viscosity, and color index are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing the specific grade's properties is provided with every 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 (15-25°C). Keep away from heat sources and incompatible materials. Under these conditions, the product is stable for extended periods.

Specification

Item	Specification
Appearance	White to off-white flakes or solid
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 75°C (mPa·s)	Contact for details
Color (Gardner)	≤ 2
Moisture 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.