Description

Dimethyl Carbonate Polymer With 1,6-Hexanediol And 3-Methyl-1,5-Pentanediol is a high-performance aliphatic polycarbonate diol, also known as poly(hexamethylene carbonate) diol. This specialty polymer is valued for its excellent hydrolytic stability, low-temperature flexibility, and resistance to yellowing, making it a superior alternative to traditional polyether and polyester polyols. It is primarily used by formulators in the polyurethane, coatings, adhesives, and elastomers industries seeking to enhance product durability and performance.

Application

• Polyurethane Elastomers: As a soft segment to produce high-performance TPUs (Thermoplastic Polyurethanes) with excellent mechanical properties, hydrolysis resistance, and low-temperature flexibility for automotive parts, industrial hoses, and cable sheathing.
• Coatings & Paints: Used in the synthesis of polyurethane dispersions (PUDs) and solvent-borne coatings for wood, plastic, and metal substrates, providing outstanding weatherability, chemical resistance, and gloss retention.
• Adhesives & Sealants: Serves as a key polyol component in moisture-cure and reactive hot-melt polyurethane adhesives, offering strong adhesion, flexibility, and durability.
• Synthetic Leather & Textile Finishing: Imparts softness, elasticity, and breathability to synthetic leather (PU leather) and functional textile coatings.
• Biomedical Materials: Potential use in the development of biodegradable and biocompatible polymers for controlled drug delivery systems and tissue engineering scaffolds due to its aliphatic carbonate structure.
• High-Performance Resins: As a building block for synthesizing advanced polycarbonate-based resins and copolymers with tailored thermal and mechanical properties.

Basic Information

Product Name	Dimethyl Carbonate Polymer With 1,6-Hexanediol And 3-Methyl-1,5-Pentanediol
CAS No.	127695-58-3
Molecular Formula	(C9H16O3)n (Representative monomer unit)
Molecular Weight	Variable (Typically 500 - 5000 g/mol, depending on grade)
Synonyms	Poly(hexamethylene carbonate) diol; Polycarbonate diol (PCD); Aliphatic polycarbonate diol; PC-diol; Poly(1,6-hexanediol carbonate) diol; DMC-HDO-MPD Polymer; Polycarbonate polyol; Hexamethylene carbonate polymer
EINECS	Contact for details

Quality Control

Our Dimethyl Carbonate Polymer is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent hydroxyl value, acid value, molecular weight distribution, and low residual monomer content, meeting the precise requirements of downstream synthesis. A comprehensive Certificate of Analysis (COA) detailing key parameters such as hydroxyl number, viscosity, water content, and color (APHA) is provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C (59-77°F). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and potential degradation. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Hydroxyl Value (mg KOH/g)	28 - 112 (Grade dependent)
Acid Value (mg KOH/g)	≤ 0.5
Water Content (%)	≤ 0.05
Viscosity @ 40°C (mPa·s)	500 - 5000 (Grade dependent)
Color (APHA)	≤ 100
Molecular Weight (Mn)	500 - 5000 (Grade dependent)
Identification (IR)	Conforms

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