Covestro Imprafix® 2794 water-based blocking hardener - 广州昊毅新材料科技股份有限公司

Covestro Products

Covestro Imprafix® 2794 water-based blocking hardener

type               
Water-based blocked aliphatic polyisocyanate
form of supply
about 38% in water
Features .
Imprafix® 2794 is a curing agent used to increase reactivity and thermal stability. It is supplied in co-solvent free form for textile coating. In combination with Bayhydrol® polyols, Imprafix® 2794 can be used to formulate water thinnable, lightfast one-pack polyurethane stoving varnishes and as an additive in waterborne stoving systems to improve flexibility, impact strength and adhesion.

Characteristic data*
characteristic , value , unit , test method
Viscosity, 23°C (D=40s-1) < 1500 mPa s DIN EN ISO 3219/A.3
Non-volatile content (1g/1h/105°C) 38 ± 1 % % DIN EN ISO 3251
pH, 20 °C 6.5 - 8.5 DIN ISO 976
*This data is for reference only, and the product specifications that should be followed are subject to the final published information.

Other data**
characteristic , value , unit , test method
Blocked NCO Content Blocked 11.5 ± 0.5 % %
**This data is general information.

Solubility / Dilution
It can be diluted with water, but the prepared diluted solutions should be tested for compatibility and storage stability, especially if co-solvents are used.

store
- Store in original Covestro airtight containers;
- Recommended storage temperature: 5-23℃;
- Avoid moisture, heat and foreign substances.

storage time
Provided that the product has been stored in full compliance with the requirements in the "Storage" clause above and handled properly, the product meets the specifications stated in the "Specifications or Characteristic Values" clause above for a period of 6 months from the date of shipment stated on the shipping document or characteristic value (as applicable).
The fact that a product exceeds the 6-month period above does not mean that it no longer meets the specifications or the values ​​set in the characteristic values. However, it is recommended that products older than 6 months from the date of shipment be tested prior to use to confirm that they still meet the values ​​set in the specifications or characteristic values. The manufacturer makes no commitments for products older than 6 months from the date of shipment, and does not assume any responsibility or liability for non-conformance to specifications or set values ​​in characteristic values.

Safety
Product data sheets are only valid when used in conjunction with their corresponding up-to-date safety data sheets. Any updates to safety-related information - as required by regulation - will only be reflected in the Safety Data Sheets, copies of which will be revised and distributed accordingly. For relevant information, including the latest classification and labelling, application, handling and further safety-related data, please refer to the currently valid Safety Data Sheet.
This product is an experimental product and we have not had extensive experience with it. Therefore, our company does not guarantee any product operation or performance in use.

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