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Chemical name: N,N''-(methylenedi-4,1-phenylene)bis[N',N'-dimethyl urea]
Synonym: 4,4'-Methylene Bis (Phenyl Dimethyl Urea); MDI URON; Omicure U-415; Omicure U-52; Technicure MDU-11M
CAS Number: 10097-09-3
A substituted urea, as latent accelerator for Dicyandiamide in epoxy resin formulations
Min . 190℃
Particle size 95.0%
Max. 10 μm
U 415 well combined with DICY can reduce the time and temperature of epoxy curing by use level at 1-3 phr.
★ structural adhesives e.g. for automobiles ,plane ,ship industries
★ Powder coatings
★ composites based Prepregs
U 415 which contents two isocyanate groups performs a best balance among reactivity, long shelf life and retention of the properties
Moderate Tg temperature
U 415 is suggested to be added < 3 phr Curing can be finalized within 80 minutes at 100°C and less than 5 minutes at 150°C.
Hydrophobic fumed silica
Liquid bisphenol-A-epoxy resin(EEW 182 -192)
DSC –Onset [°C]
DSC –Tg [°C]
Gel time 140°C [min]
Shelf life (double viscosity) at 23°C [days]
Result values may be varied based on different used resin matrix.
Fillers and other additives to formulation can also change properties.
Packing and storage
--10 or 15kg per Box, carton, kraft bags, FIBC or customized
--Keep sealed in original package, under a cool and dry condition ,avoid humidity. recommended storage period no exceeds 12 months.
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