Description

Poly(Hexamethylene Phthalate) Diol is a high-purity, linear polyester diol characterized by its terminal hydroxyl groups and aromatic phthalate backbone. This chemical structure provides a unique balance of rigidity, thermal stability, and reactivity, making it a valuable intermediate for synthesizing high-performance polymers. It is primarily sought by manufacturers in the polyurethane, coatings, adhesives, and specialty elastomers industries seeking to enhance product durability and chemical resistance.

Application

• Polyurethane Elastomers & Thermoplastics (TPU): Serves as a key macrodiol building block, imparting excellent mechanical strength, hydrolysis resistance, and low-temperature flexibility to the final polymer.
• High-Performance Coatings & Paints: Used in the formulation of polyurethane coatings for automotive, industrial, and marine applications, providing enhanced weatherability, gloss retention, and chemical resistance.
• Adhesives & Sealants: Incorporated into polyurethane-based adhesive systems to improve bonding strength, flexibility, and long-term durability under demanding environmental conditions.
• Specialty Resins & Plasticizers: Acts as a reactive modifier or intermediate in the synthesis of specialized polyester resins and polymeric plasticizers for PVC and other polymers.
• Fiber & Film Production: Utilized in the production of specialty fibers and films where thermal stability and specific mechanical properties are required.

Basic Information

Product Name	Poly(Hexamethylene Phthalate) Diol
CAS No.	27516-71-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details (Grade Dependent)
Synonyms	Poly(hexamethylene phthalate) glycol; Poly(1,6-hexanediol phthalate); Hexamethylene Phthalate Diol Oligomer; PHP Diol; Polyester Diol based on Phthalic Acid and 1,6-Hexanediol; 1,6-Hexanediol Phthalate Polyester Diol; Phthalate-Terminated Poly(hexamethylene) Glycol
EINECS	Contact for details

Quality Control

Our Poly(Hexamethylene Phthalate) Diol is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistency in hydroxyl value, acid value, molecular weight distribution, and color. Certificates of Analysis (COA) documenting these specifications are provided to guarantee the material meets your precise formulation requirements.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect reactivity.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 1.0
Moisture Content (%)	≤ 0.1
Color (APHA)	≤ 100
Molecular Weight (Mn)	Grade Dependent

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