UR500 Urea Accelerator for Epoxy Curing TDI URON Latent Accelerator Synonym of Omicure U 410

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    Negotiable

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  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Beijing

  • Validity to:

    Long-term effective

  • Last update:

    2019-06-13 20:49

  • Browse the number:

    238

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Gloriaful Industry Co., Limited

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Area:Beijing

Address:Beijing

Website:http://www.glorisochem.com/ http://www.rqxiangye.com/com/seogoogle/

Product details

IDENTIFICATION


Chemical name: N, N"-(4-methyl-1,3-phenylene)bis [N',N'- dimethylurea] 80% N, N''-(methyl-m-phenylene)bis [N', N'-dimethylurea] 20%

Synonym: mixed isomers of 80/20 Toluene Bis Dimethyl Urea; Dyhard UR500; TDI URON; Omicure U-410

CAS Number: 17526-94-2, 26604-41-1

Structure formula: 






A highly active accelerator for thermosetting epoxy curing systems, while still with latency based on substituted urea , greatly promote highly blocked hardeners of DICY during epoxy curing process.


SPECIFICATION


Appearance

White powder

Assay

Min. 95%

Melting point

Min . 180℃

Particle size 98.0%

Max. 10 μm

Volatiles

Max. 1.0%


APPLICATION


UR500 provides the most reactive acceleration to epoxy/dicyandiamide formulations:

★ Prepregs for composites e.g. wind power, automotive, marine engineering and aerospace industry

★ Encapsulation materials for electronic industry

★ Powder coatings for chemical-resistance 

★ Reinforcements for car, ship industry

UR500 can be a sole curing agent for thermosetting epoxy formulation without dicyandiamide hardener:

★ Prepregs for composites with low enthalpy development

★ Laminates of thick layers


ADVANTAGES

The highest reactivity among the whole series of UR urea accelerators

Latency of 2 months still can be obtained

More environmental friendly for our green earth

Ideal ability of using alone as a curing agent


Highly activity of UR500 makes a fast curing process even under the temperature low at 80°C, while causes less effect on Tg. When controlling the percentage of adding of UR500, Shelf life still exceed 3 month. Mixed isomers maintaining functions bring the costs less expensive. No irritation &low toxicity help UR500 to in a popular and brighter prospect.


FORMULATION CASES


Formulation

1

2

3

UR500

1.0 phr

3.0 phr

8.0phr

Dicyandiamide Micronized

6.5 phr

6.5 phr


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

100 phr

100 phr

100 phr

DSC –Onset [°C]

143

138

150

DSC –Tg [°C]

150

142

98

Gel time 140°C [min]

4

3

14

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

70

60

60


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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http://www.glorisochem.com/