Description

1,4-Butanediol, polymer with 5-amino-1,3,3-trimethylcyclohexanemethanamine, α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)] and 1,1'-methylenebis[isocyanatobenzene], Me Et ketone oxime-blocked is a specialized blocked polyurethane prepolymer designed for high-performance coating systems. This advanced chemical offers a unique balance of stability and reactivity, enabling the formulation of durable, chemically resistant finishes. It is primarily utilized by manufacturers in the industrial coatings, automotive refinish, and heavy-duty maintenance paint sectors seeking superior cross-linking performance.

Application

• Two-component (2K) Polyurethane Coatings: Serves as a blocked polyisocyanate cross-linker, activated upon heating to cure with polyols, producing films with excellent chemical and abrasion resistance.
• Automotive OEM and Refinish Paints: Used in high-grade clearcoats and pigmented systems requiring outstanding gloss retention, weatherability, and mechanical properties.
• Industrial Maintenance & Marine Coatings: Formulated into protective coatings for steel structures, pipelines, and marine vessels where resistance to solvents, fuels, and corrosive environments is critical.
• Plastic Coatings: Provides adhesion and flexibility for coatings on automotive plastics, consumer electronics, and other plastic substrates.
• Coil and Can Coatings: Employed in formulations that require fast cure schedules and compliance with food contact or other regulatory standards.
• Adhesives and Sealants: Acts as a key component in high-performance polyurethane adhesives, offering strong bonding and environmental durability.

Basic Information

Product Name	1,4-Butanediol, polymer with 5-amino-1,3,3-trimethylcyclohexanemethanamine, α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)] and 1,1'-methylenebis[isocyanatobenzene], Me Et ketone oxime-blocked
CAS No.	111849-96-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked polyurethane prepolymer; Polyurethane, crosslinked, Me Et ketone oxime-blocked; Isocyanic acid, polymethylenepolyphenylene ester, polymer with 1,4-butanediol, 5-amino-1,3,3-trimethylcyclohexanemethanamine and α-hydro-ω-hydroxypoly(oxy-1,2-ethanediyl), oxime-blocked; Methyl ethyl ketoxime-blocked polyisocyanate; MEKO-blocked polyisocyanate; Blocked aliphatic polyisocyanate resin; IPDI-based blocked prepolymer (common description).
EINECS	Contact for details

Quality Control

Our production of this blocked polyisocyanate prepolymer adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed for critical parameters including blocked isocyanate content, viscosity, solids content, and color. Comprehensive Certificates of Analysis (COA) documenting these specifications are provided with every shipment. Our quality management system supports compliance with relevant industry standards for chemical manufacturing.

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); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can lead to premature reaction and gelation. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Solids Content	70 ± 2 %
Viscosity (at 25°C)	2000 - 5000 mPa·s
Blocked NCO Content	6.0 - 8.0 %
Specific Gravity (25°C)	1.05 - 1.10
Flash Point	> 100 °C

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