Description

Poly(1,4-Butanediol/Neopentyl Glycol-Alt-Adipic Acid) is a high-performance, saturated polyester polyol synthesized from 1,4-butanediol, neopentyl glycol, and adipic acid. This copolymer structure provides an exceptional balance of flexibility, hydrolytic stability, and chemical resistance, making it a critical intermediate for demanding industrial applications. It is primarily sought by manufacturers in the polyurethane, coatings, adhesives, and specialty elastomers sectors for formulating products that require durability under harsh environmental conditions.

Application

• Polyurethane Elastomers & Castables: Serves as a key soft segment polyol for producing high-performance elastomers with excellent tensile strength, tear resistance, and low-temperature flexibility.
• Coatings & Paints: Used in the synthesis of polyester resins for high-durability industrial, marine, and automotive coatings that demand superior weatherability and chemical resistance.
• Adhesives & Sealants: Imparts flexibility and adhesion in moisture-curing polyurethane adhesives and sealants for construction and automotive assembly.
• Thermoplastic Polyurethanes (TPU): A fundamental building block for TPUs used in wires, cables, hoses, and films requiring a combination of mechanical robustness and processability.
• Synthetic Leather & Textile Coatings: Provides the soft, flexible, and durable polyol backbone for polyurethane dispersions (PUDs) applied to fabrics and synthetic leather.
• Engineering Plastics & Composites: Acts as a modifier or cross-linking agent in composite materials to enhance impact resistance and dimensional stability.

Basic Information

Product Name	Poly(1,4-Butanediol/Neopentyl Glycol-Alt-Adipic Acid)
CAS No.	36609-31-1
Molecular Formula	(C10H18O4)n • (C5H12O2)m
Molecular Weight	Varies by grade (typically 500 - 5000 g/mol)
Synonyms	Poly(butanediol neopentyl glycol adipate); Poly(1,4-butanediol/neopentyl glycol-alt-adipic acid) copolymer; BDO/NPG/AA Copolymer; Poly(neopentyl glycol adipate-co-butylene adipate); Saturated Polyester Polyol from BDO, NPG, and Adipic Acid; Adipic Acid/1,4-Butanediol/Neopentyl Glycol Copolymer; Polyester Polyol 36609-31-1
EINECS	Contact for details

Quality Control

Our production of Poly(1,4-Butanediol/Neopentyl Glycol-Alt-Adipic Acid) adheres to stringent quality management protocols. Each batch is characterized for critical parameters including hydroxyl value, acid value, viscosity, and molecular weight distribution to ensure consistency and performance. Certificates of Analysis (COA) documenting these specifications are available for every shipment, providing traceability and guaranteeing compliance with your formulation requirements.

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). This product is hygroscopic (moisture-sensitive). Keep container tightly sealed when not in use to prevent moisture absorption, which can affect product properties. Keep away from strong oxidizers and heat sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Hydroxyl Value (mg KOH/g)	30 - 120 (Grade dependent)
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 25°C (mPa·s)	500 - 10,000 (Grade dependent)
Water Content (%)	≤ 0.1
Color (Gardner)	≤ 3

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