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UR300 Urea Accelerator for Epoxy Curing Fenuron Latent Accelerator Synonym of Omicure U-405
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Product: Views:373UR300 Urea Accelerator for Epoxy Curing Fenuron Latent Accelerator Synonym of Omicure U-405 
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Valid until: Long-term effective
Last updated: 2019-05-14 03:34
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IDENTIFICATION


Chemical name: 1-Phenyl-3,3-dimethylurea

Synonym: N-Phenyl-N', N'-dimethylurea; Dyhard UR300; Fenuron; Omicure U-405

CAS Number: 101-42-8

Structural formula:



A substituted urea used as latent accelerator for Dicyandiamide curing in epoxy resin, 


SPECIFICATION


Appearance

Off-white powder

Assay

Min. 98.0%

Melting point

Min . 126℃

Particle size 98.0%

Max. 10 μm

Volatiles

Max. 1.0%


APPLICATION


UR300 as an accelerator performs similar and more reactivity than UR200 in dicyandiamide -epoxy curing systems 

★ Prepregs of epoxy composites e.g. sports equipments industry

★ Encapsulation compounds for electronic industry e.g. CCL ,

★ structural adhesives e.g. conductive resin

★ Reinforcements e.g. carbon fiber

★ Powder coatings 


ADVANTAGES


Similar function while more safer use than UR200&UR600

Suitable for chlorine-free formulation

The addition of UR300 to dicyandiamide -epoxy formulations is particularly for the curing temperature range of 110-140℃. By providing active isocyanate & dimethyl- amine(DMA), UR300 can catalye curing of epoxy. With less steric hindrance, UR300 realizes the faster cure process than UR200. the higher reactivity of UR300 brings excellent mechanical and electrical properties to cured resins.

Good latency allows the shelf life up to 2 months under room condition.


FORMULATION CASES


Formulation

1

2

3

UR300

1.0 phr

3.0 phr

5.0phr

Dicyandiamide Micronized

6.5 phr

6.5 phr

6.5 phr

Liquid bisphenol-A-epoxy resin
(EEW 182 -192)

100 phr

100 phr

100 phr

DSC –Onset [°C]

150

145

142

DSC –Tg [°C]

143

131

120

Gel time 140°C [min]

5

4

3

Shelf life (double viscosity) at 23°C [days]

50

40

35


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 18 months.


For further information about UR300, please leave a message and we will get you prompt response


http://www.glorisochem.com/

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