IsoQure® UR 200
Chemical name: 3-(3,4- Dichlorophenyl)- 1,1- dimethylurea / Diuron
CAS Number: 330-54-1
EINECS Number: 206-354-4
IsoQure® UR 200 is a blocked accelerator for the epoxy-dicyandiamide reaction allowing for a long shelf life. Following thermal activation, it provides with fast curing and high cross-linking density.
Material Definition
Appearance: Off-white to tan powder
Melting Point, initial: 153 – 159°C
Purity: Min. 97%
Volatile Matter: Max. 1 %
Molecular Weight: 233, 10
Application
Dicyandiamide hardeners offer excellent mechanical and electrical properties, good processing, and a long shelf life of finished epoxy resin formulations. However, the necessary curing temperatures of ~ 200°C are too high for most applications.
IsoQure® UR 200 is a blocked accelerator which reduces the necessary curing temperature significantly (above 130°C, short cure cycles are achieved) and does not sacrifice the shelf life of the compound.
Applications extend from laminates for electrical circuit boards to powder coatings, from structural adhesives to high- tech carbon fibre composites.
Reaction
IsoQure® UR 200 decomposes under heat to form isocyanates and catalytically active dimethyl-amine. The dimethylamine accelerates the curing of the epoxy and the isocyanates react with epoxies to form additional linkages via oxazolidinone.
Handling, Storage and Packaging
The processing and use of IsoQure® UR 200 requires adequate technical and professional knowledge. Please consult safety data sheet and observe local safety regulations.
The legal requirements prevailing in your country, especially in the avoidance of accidents, working hygiene and patent rights must be observed.
IsoQure® UR 200 has to be stored in tightly sealed original containers in a cool and dry place below 28°C. Properly stored it is stable for a minimum of two years.
Standard pack size of IsoQure® UR 200 is 25 kg in a bag; 800 kg on a pallet.
Regulatory Information
EU REACH registered: Yes
TSCA: Listed
Availability
Disclaimer / Conditions
Revision: 2019-11-13 / c87c
We strive to be accurate in all of our documentation. However, any information or advice
is provided by us in good faith, without warranty or unlimited claim of fitness for a specific
application. We sell to qualified industrial users only. The onus is on the product's user
to research carefully and then to continually test the product and its application procedures
within the context of its specific use. Use of our products and data requires diligance and
care, and is within the sole responsibility of the user. Kautschuk-Group does not accept any
liability for damages incurred. Our general
Terms and Conditions apply.
Stated storage and shelf life times are minimum guaranteed values for a period starting on the day of shipment.
After this period has expired, the product requires additional quality control testing but may very well
still be within specification. For more information, refer to our Shelf Life Policy.
For updates on product information, please check this web page regularly:
https://kautschuk.com/products/epoxy/ur/isoqure-ur-200