OMICURE® U 24 M

OMICURE® U 24 M is an aromatic substituted urea used as a latent ACCELERATOR for the dicyandiamide cure of epoxy resins. It reduces the time and temperature required for curing one-component products. Compared to other substituted ureas, toluene bis dimethyl urea offers the greatest acceleration while having minimal impact on cured properties. Suggested use levels are and lt;5 phr, with curing times of about 50 minutes at 100°C and under 3 minutes at temperatures and gt;150°C. It provides a room temperature shelf life of over 3 months when used with DGEBA/DICY. Storage stability improves when insoluble ingredients are used. OMICURE® U 24M can be incorporated with dicy in formulations.

 

The information, specifications, and materials provided with this product are for general informational purposes only and are subject to change without notice. The product is provided “as is” without any warranties, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement. Users are responsible for ensuring the product is suitable for their intended application and for following all applicable safety guidelines and instructions.

The information, specifications, and materials accessible here may not reflect the most current version. Please use the Request a Document feature for the most current product documentation available.

Functions: Accelerator, Catalyst

Chemical Name: 3,3'-(4-Methyl-1,3-phenylene)bis(1,1-dimethylurea)

Chemical Family: Urea & Urea Derivatives

CAS Number: 17526-94-2

End Uses: 1K (1 Component) Adhesive, Encapsulant, Film Adhesives, Potting Compound, Powder Coating

Compatible Polymers & Resins: Epoxies (EP)

Processing Methods: Prepreg Processing

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Enhanced TDS

Identification & Functionality

Blend
No
CAS Number
17526-94-2
CASE Ingredients Functions
Accelerator,
Catalyst
Chemical Family
Urea & Urea Derivatives
Chemical Name
3,3'-(4-Methyl-1,3-phenylene)bis(1,1-dimethylurea)
Composite Materials Functions
Accelerator
Single Ingredient
Yes
Synonyms
1,1′-(4-Methyl-1,3-phenylene)bis[3,3-dimethylurea], 1,1′-(4-Methyl-m-phenylene)bis[3,3-dimethylurea], 2,4-Bis(dimethylaminocarbonylamino)toluene, 2,4-Tolylenebis(N′,N′-dimethylurea), 3-[5-(Dimethylcarbamoylamino)-2-methylphenyl]-1,1-dimethyl urea, 3,3′-(4-Methyl-1,3-phenylene)bis(1,1-dimethylurea), N,N′-Bis(dimethylcarbamoyl)-2,4-toluidine, N,N′′-(4-Methyl-1,3-phenylene)bis[N′,N′-dimethylurea], NSC 375994
Technologies
CASE,
Composite Materials
Product Families
CASE — Additives
Catalysts & Initiators
Composite Materials — Additives
Initiators, Promotors & Catalysts

Features & Benefits

CASE Ingredients Features
Fast Cure,
High Temperature Resistance,
High Temperature-Curing,
Improves Storage Stability,
Low Temperature-Curing,
Room Temperature Curing,
Thermal Resistance
Materials Features
1K (1 Component)

Applications & Uses

Adhesive & Sealant End Applications
1K (1 Component) Adhesive,
Encapsulant,
Film Adhesives,
Potting Compound
Coating End Applications
Powder Coating
Compatible Polymers & Resins
Epoxies (EP)
Composites Processing Methods
Prepreg Processing
Markets
Automotive & Transportation,
Electrical & Electronics,
Industrial
Applications
Automotive & Transportation — Transportation
Aerospace & Aviation
Electrical & Electronics — Packaging & Assembly
Potting Compounds
Industrial — Chemical & Industrial Manufacturing
Chemical Manufacturing,
Industrial Adhesives & Sealants
Product Applications
  • One-component adhesives
  • Epoxy powder coatings
  • Prepregs, composites, and film adhesives
  • Electronic potting and encapsulating compounds

Properties

Physical Form
Powder

Regulatory & Compliance

Chemical Inventories
AIIC (Australia),
DSL (Canada),
IECSC (China),
KECI (Korea),
NZIoC (New Zealand),
TCSI (Taiwan),
TSCA (USA)

Packaging & Availability

Regional Availability
  • Asia Pacific

Storage & Handling

Storage Condition

OMICURE® U 24M should be stored in a dry place, preferably in the sealed original container, at temperatures between 2 and 40 °C. The product should not be stored exposed to direct sunlight.

Handling Precaution
  • OMICURE® U 24M is a fine powder classified as a nuisance dust. It is not a primary skin or eye irritant but will cause respiratory irritation with prolonged dust inhalation.
  • The use of engineering controls to keep the material confined or convey dust away from the breathing zone is the preferred method of handling. Alternatively, an approved dust respirator and impervious clothing should be worn if the material becomes airborne.
  • Allowing the dust to settle on vegetation may cause harm and may prevent germination.

Other

Appearance
Off-white to white powder
Color (SDS)
Off-White
Odor (SDS)
Slight Ammoniacal
Physical Properties
ValueUnitsTest Method / Conditions
Melting Point180.0-195.0°CDifferential Scanning Calorimetry