OMICURE U-405M
OMICURE U-405M
OMICURE U-405 is an aromatic substituted urea, that is intended for use as a latent accelerator for the dicyandiamide cure of epoxy resins. The addition of OMICURE® U-405 to these formulations produces shelf-stable one-part products that cure in shorter times and/or at lower temperatures.
Of the CVC Thermoset Specialties substituted ureas, OMICURE U-405 is most similar in structure to monuron and diuron. However, OMICURE U-405 does not contain any chlorine and is, therefore, safer to use than monuron or diuron. When substituting OMICURE U-405 for either of these products, the formulator should use approximately 30% – 50% less 94 to achieve similar degrees of acceleration. Suggested use levels of this product are ≤ 5 phr. At 100°C, cures can be obtained in about one hour and in less than four minutes at temperatures ≥ 150 °C. Cure times are dependent on the composition of the formulated product and your particular end application.
Some of the factors that can affect shelf life are formulation ingredients and compounding parameters. Ingredients in which OMICURE U-405 is insoluble at processing and storage temperatures will enhance overall storage stability. It can be incorporated into your formulation concurrent with the dicy addition.
Applications for OMICURE U-405M
- Adhesives
- Powder coatings
- Prepregs
- Encapsulations
- Reinforcements
Properties
Check out other OMICURE Curing Agents, Accelerators, and Catalysts in the CVC Product Brochure!
