Description

4,4'-Methylenebis(2,6-Diisopropylaniline) is a high-purity, sterically hindered aromatic diamine monomer. This compound matters as a critical building block in the synthesis of advanced polymers, where its molecular structure imparts superior thermal stability and mechanical properties to the final material. It is essential for manufacturers in the polyurethane, epoxy resin, and high-performance elastomer industries seeking to enhance product durability and performance under demanding conditions.

Application

• Polyurethane Elastomers & Prepolymers: Serves as a chain extender and curing agent, contributing to excellent hydrolytic stability, mechanical strength, and thermal resistance in cast elastomers, adhesives, and coatings.
• High-Performance Epoxy Resin Systems: Acts as a curing agent/hardener for epoxy formulations used in aerospace composites, electronic encapsulants, and industrial tooling, offering low moisture absorption and high glass transition temperatures (Tg).
• Polyimide and Polyamide Synthesis: Used as a monomer in the production of heat-resistant polymers for applications in electronics, automotive, and aerospace sectors.
• Liquid Crystal Polymers (LCPs): Functions as a key intermediate in the manufacture of high-modulus, high-temperature LCPs for precision molded components.
• Chemical Intermediate: Employed in organic synthesis for creating complex molecules, including antioxidants, light stabilizers, and pharmaceutical intermediates.
• Rubber Vulcanization & Additives: Used in the production of specialty rubber chemicals and accelerators.

Basic Information

Product Name	4,4'-Methylenebis(2,6-Diisopropylaniline)
CAS No.	19900-69-7
Molecular Formula	C27H42N2
Molecular Weight	394.64 g/mol
Synonyms	MBIPA; Bis(2,6-diisopropyl-4-aminophenyl)methane; 4,4'-Methylenebis[2,6-bis(1-methylethyl)benzenamine]; 2,2'-Dimethyl-4,4'-methylenebis(6-isopropylaniline); DADPM (Diisopropylated Diaminodiphenylmethane); Lonzacure® M-DIPA (Trade Name); Curehard® M-DIPA
EINECS	243-409-8

Quality Control

Our production of 4,4'-Methylenebis(2,6-Diisopropylaniline) adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing all critical parameters are provided and available upon request.

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). Keep away from strong oxidizing agents, acids, and heat sources. Due to potential sensitivity, the container should be kept tightly sealed when not in use to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	88 - 92 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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