Description

Hexanedioic acid, polymer with 2-butene-1,4-diol, 1,6-diisocyanatohexane, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol, hydrazine, 1,1-methylenebis4-isocyanatocyclohexane and methyloxirane, bisulfited is a specialized, high-performance polyurethane prepolymer or resin intermediate, chemically modified with a bisulfite group. This unique bisulfite-capped structure provides enhanced stability, reduced sensitivity to moisture, and improved handling characteristics compared to conventional isocyanate-terminated prepolymers. It is engineered for demanding applications where controlled reactivity, shelf-life, and specific material properties are critical. This product is essential for formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking advanced polymer solutions.

Application

• Moisture-Curable Coatings and Adhesives: Serves as a key resin component in one-component systems that cure upon exposure to atmospheric humidity, offering convenience and performance.
• High-Performance Elastomers: Used in the synthesis of polyurethane elastomers requiring excellent mechanical properties, chemical resistance, and weatherability.
• Sealants and Binders: Provides strong adhesion and flexibility in construction, automotive, and industrial sealant formulations.
• Composite Materials: Acts as a matrix resin or binder in fiber-reinforced composites for lightweight structural components.
• Specialty Ink and Overprint Varnish Resins: Imparts durability, gloss, and resistance properties in advanced printing applications.
• Waterborne Polyurethane Dispersions (PUDs): Can be utilized as a precursor for creating stable aqueous polyurethane dispersions for eco-friendly coatings.
• Crosslinking Agent: Functions as a reactive intermediate for crosslinking hydroxyl-functional polymers in various thermoset applications.

Basic Information

Item	Details
Product Name	Hexanedioic acid, polymer with 2-butene-1,4-diol, 1,6-diisocyanatohexane, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol, hydrazine, 1,1-methylenebis4-isocyanatocyclohexane and methyloxirane, bisulfited
CAS No.	108126-47-2
Molecular Formula	Complex Polymer Mixture
Molecular Weight	Variable (Polymer Distribution)
Synonyms	Bisulfite-capped polyurethane prepolymer; Sulfited polyurethane resin; Adipic acid copolymer polyol isocyanate bisulfite adduct; Polyurethane prepolymer, bisulfite blocked; Hexamethylene diisocyanate (HDI) / Isophorone diisocyanate (IPDI) based bisulfite adduct; Blocked polyurethane intermediate; Moisture-curable polyurethane resin intermediate; CAS 108126-47-2
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems. Each batch is characterized using advanced analytical techniques to ensure consistency in key parameters such as NCO equivalent weight (prior to blocking), bisulfite content, viscosity, and solids content. While produced under conditions aligned with industrial chemical standards, we provide comprehensive Certificates of Analysis (COA) with each shipment, detailing the specific batch characteristics. Specifications can be aligned with customer requirements for integration into regulated supply chains.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for polyurethane intermediates, typically between 15°C and 25°C (59°F and 77°F). Avoid exposure to excessive heat and moisture to prevent premature reaction or viscosity changes. Keep away from strong oxidizing agents and bases. For long-term storage, consider using under an inert atmosphere (e.g., nitrogen blanket) to maintain optimal stability.

Specification

Item	Specification
Appearance	Viscous liquid, Colorless to pale yellow
Solids Content	Contact for details
Viscosity (at 25°C)	Contact for details
Equivalent Weight (on solids)	Contact for details
Bisulfite Content	Contact for details
Specific Gravity	Contact for details
Flash Point	> 100 °C

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