Description

Hexanedioic Acid, Polymer With 1,4-Butanediol, 2,2-Dimethyl-1,3-Propanediol And 1,1-Methylenebis4-Isocyanatobenzene CAS NO 56815-45-3 is a high-performance polyurethane prepolymer or resin derived from adipic acid, a blend of diols, and MDI. This specialized polymer is engineered to deliver exceptional durability, chemical resistance, and versatile processing characteristics for demanding industrial applications. It is a critical raw material for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product performance.

Application

• High-Performance Coatings: Used as a binder in industrial and protective coatings for metal, concrete, and plastic substrates, offering excellent gloss retention, abrasion resistance, and weatherability.
• Adhesives & Sealants: Serves as a key component in formulating structural adhesives, laminating adhesives, and flexible sealants that require strong bonding and resistance to environmental stress.
• Elastomers and Castables: Employed in the production of polyurethane elastomers for rollers, wheels, gaskets, and industrial parts demanding a balance of toughness and elasticity.
• Composite Materials: Acts as a matrix resin in fiber-reinforced composites for automotive, marine, and construction applications, providing enhanced mechanical properties.
• Textile & Leather Finishing: Utilized in coatings and finishes to impart water resistance, durability, and a soft hand feel to fabrics and synthetic leather.
• Electrical Potting & Encapsulation: Provides protective insulation and environmental sealing for sensitive electronic components due to its good dielectric properties and adhesion.

Basic Information

Product Name	Hexanedioic Acid, Polymer With 1,4-Butanediol, 2,2-Dimethyl-1,3-Propanediol And 1,1-Methylenebis4-Isocyanatobenzene
CAS No.	56815-45-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Adipic Acid, Polymer with 1,4-Butanediol, 2,2-Dimethyl-1,3-Propanediol and 4,4'-Methylenebis(phenyl isocyanate); Polyurethane Prepolymer based on Adipic Acid, BDO, NPG, and MDI; MDI-based Polyester Polyurethane Resin; Aliphatic Polyester Polyurethane; CAS 56815-45-3; Adipic acid/butanediol/NPG/MDI copolymer; 4,4'-MDI polyester polyol prepolymer
EINECS	Contact for details

Quality Control

Our production of this polyurethane polymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, hydroxyl value, and acid number are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for the specific grade (typically between 15°C and 25°C). Keep away from heat, open flames, and sources of ignition. Due to the reactive isocyanate groups, protect from atmospheric moisture to prevent gelation or viscosity increase.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 1.0
Solid Content	Contact for details
Color (Gardner)	≤ 3
Moisture Content	≤ 0.05%

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