Description

1,3-Diisocyanatomethylbenzene Homopolymer, 1-Dodecanol-Blocked is a blocked polyisocyanate prepolymer derived from meta-tetramethylxylene diisocyanate (m-TMXDI). This product matters as a latent crosslinker that remains stable at room temperature but releases the active isocyanate upon heating, enabling controlled curing in high-performance coatings and adhesives. It is essential for formulators in the automotive, industrial maintenance, and specialty plastics industries who require excellent weatherability, chemical resistance, and low yellowing in their final products. The CAS number for this compound is 528598-79-0.

Application

• High-Performance Industrial Coatings: Used as a crosslinker in polyurethane coatings for automotive OEM, refinish, and plastic part coatings, providing excellent durability and gloss retention.
• Adhesives and Sealants: Serves as a key component in heat-curable polyurethane adhesives for bonding metals, plastics, and composites, offering strong, flexible bonds.
• Wire and Cable Enamels: Employed in the formulation of magnet wire enamels, contributing to thermal stability and electrical insulation properties.
• Elastomers and Casting Resins: Acts as a curing agent for polyurethane elastomers used in rollers, wheels, and industrial parts requiring abrasion resistance.
• Powder Coatings: Functions as a crosslinker in thermosetting powder coatings, enabling low-temperature cure profiles and enhanced flow characteristics.
• Textile and Leather Finishes: Utilized in coatings for synthetic leather and technical textiles to impart water resistance, flexibility, and a soft hand feel.

Basic Information

Item	Detail
Product Name	1,3-Diisocyanatomethylbenzene Homopolymer, 1-Dodecanol-Blocked
CAS No.	528598-79-0
Molecular Formula	(C11H10N2O2)n • Blocking Agent
Molecular Weight	Varies by degree of polymerization. Contact for details.
Synonyms	m-TMXDI Homopolymer, Dodecanol-Blocked; Blocked m-TMXDI Prepolymer; 1,3-Bis(1-isocyanato-1-methylethyl)benzene Homopolymer, Dodecanol-Blocked; Meta-Tetramethylxylene Diisocyanate Homopolymer Blocked with Lauryl Alcohol; Blocked Poly(m-TMXDI); Lauryl Alcohol-Blocked m-TMXDI Polymer; Isocyanate-Terminated Prepolymer (Blocked); Latent Polyisocyanate Crosslinker
EINECS	Contact for details.

Quality Control

Our 1,3-Diisocyanatomethylbenzene Homopolymer, 1-Dodecanol-Blocked undergoes rigorous quality testing to ensure batch-to-batch consistency and performance. Key parameters such as blocked isocyanate content, viscosity, solids content, and deblocking temperature are strictly monitored. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our manufacturing processes adhere to ISO 9001 quality management standards, ensuring reliability for your critical formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent moisture absorption, which can lead to premature deblocking and gelation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Blocked NCO Content	Contact for details
Solids Content	Contact for details
Viscosity (25°C)	Contact for details
Deblocking Temperature	~130 - 150°C
Specific Gravity (25°C)	Contact for details
Color (Gardner)	≤ 2
Moisture Content	≤ 0.1%

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