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MOCA-HR: High-Temperature Stable Curing Agent for Light-Colored Cast Polyurethane Elastomers
Chemical Information
Chemical Name: 3,3’-Dichloro-4,4’-diaminodiphenylmethane
Molecular Formula: C₁₃H₁₂N₂Cl₂
Molecular Weight: 267.16
CAS Number: 101-14-4 Specifications Table
Item
Specification
Appearance
Pale yellow granular pellet (MOCA-HR)
Melting Point (℃)
≥ 97
Moisture (%)
< 0.30
Solid Density (24 ℃) (g·cm⁻³)
1.44
Liquid Density (107 ℃) (g·mL⁻¹)
1.26
Amine Equivalent
131 – 136
Free Amine (%)
< 1.00
Color (Gardner)
< 4
Insoluble Matter (%)
< 0.04
Hygroscopicity
None
Storage Condition
Airtight storage in a dry area, away from direct sunlight
Solubility
Easily soluble in DMF, DMSO, MEK and THF; soluble in ethanol, toluene and benzene; insoluble in water.
Safety
LD₅₀ (rats) ＞ 5000 mg/kg. Wear a mask, gloves and goggles during handling.
Advantages
MOCA-HR is a high-performance aromatic diamine curing agent engineered to deliver exceptional thermal stability and superior color retention under demanding processing conditions.
Even under prolonged or repeated heating cycles, withstanding peak temperatures of up to 150°C, the molten MOCA-HR maintains a consistently light yellow, clear, and transparent appearance. It exhibits no signs of discoloration, turbidity, or thermal degradation, ensuring stable and predictable curing performance.
This outstanding thermal and chromatic stability makes MOCA-HR particularly suitable for applications requiring high-temperature processing, re-melting operations, or stringent aesthetic requirements where consistent product appearance is critical.
Applications
MOCA-HR is a high-performance aromatic diamine that functions as both a chain extender and curing agent for polyurethane systems. It is specifically formulated for use in cast polyurethane elastomer production, particularly in applications utilizing casting machines for precise and efficient processing.
One of its standout features is its ability to impart exceptional light color stability to the final polyurethane products—an essential advantage for applications where appearance, transparency, or color consistency is critical.
In addition to its role in polyurethane systems, MOCA-HR also serves as an effective curing agent for epoxy resins, offering versatility across different thermoset material formulations.
With its excellent thermal stability, consistent performance, and aesthetic benefits, MOCA-HR is an ideal choice for manufacturers seeking high-quality, visually appealing cast elastomers and durable epoxy systems.
Packaging
Net Weight: 50 kg per unit or another
Packaging Material: Carton drum with an inner black polyethylene liner (ensures moisture resistance and product purity)
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company
Year Established:
2013
Total Annual:
10000000-20000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Qingdao Exceed Fine Chemicals Co., Ltd is a high-tech enterprise that integrates manufacturing and trading. We specialize in the production of polyurethane-based products.Our company is dedicated to investing in research and development of cutting-edge products, collaborating with leadin... Qingdao Exceed Fine Chemicals Co., Ltd is a high-tech enterprise that integrates manufacturing and trading. We specialize in the production of polyurethane-based products.Our company is dedicated to investing in research and development of cutting-edge products, collaborating with leadin...
