Product Specifications

  Other data*

*This data is general information and is not part of the product specification.

  Features/Applications
     It is recommended to mix Bayhydrol® A2427 with anionic hydrophilically modified polyisocyanates such as Bayhydur® 2487/1 to make clear varnishes, pigmented primers and topcoats. Topcoats made of Bayhydrol® A2427 and Bayhydur® XP 2487/1 have good chemical resistance, especially to bleach. Bayhydrol® A2427 produces tough, scratch-resistant one-pack coatings for polystyrene and ABS substrates. This coating has high alcohol and oil resistance, especially in one-component metal one-coat systems. 

Another advantage of Bayhydrol® A2427 is its good resistance to yellowing. Bayhydrol® A2427 can be mixed with polyurethane dispersions to formulate one- and two-component formulations. The product can also be combined with water-based light-curable binders. In many cases, this combination can increase the hardness of the formulation, thereby improving its chemical resistance. But note that compatibility must be tested in advance. The formulated two-component paint has a maximum pot life of 4 hours due to its high reactivity. Therefore, two-component spray equipment is recommended, especially when using pigmented formulations. Coating equipment can be cleaned with water, water/propanol mixtures, water/ethanol mixtures (0.5 to 5% N,N-dimethylaminoethanol can be added in particular) or alkaline cleaners.

store
- Store in original Covestro airtight containers.
- Recommended storage temperature: >0-30°C
- Avoid freezing, heat and foreign substances.
General Information: This product is sensitive to freezing. Prolonged freezing can severely damage the product. Long-term storage at higher temperatures can result in a decrease in viscosity or an increase in average particle size, possibly resulting in precipitation or coagulation. Can render the product unusable due to contamination with certain bacteria, molds or algae.

storage time
Covestro declares that, provided that the product is stored in full compliance with the requirements in the "Storage" clause above and handled properly, the product complies with the above "specification or characteristic value" for a period of 6 months from the date of shipment stated on the shipping document Specifications or characteristic values ​​stated in the Terms (as applicable). Exceeding the above 6-month period does not mean that a product no longer meets the specifications or the values ​​set in the characteristic values. However, Covestro recommends that products older than 6 months from the date of shipment be tested prior to use to confirm that they still meet the specifications or set values ​​in the characteristic values. Covestro makes no commitments for products older than 6 months from the date of shipment, and accepts no responsibility or liability for non-conformance of specifications or set values ​​in characteristic values.

  Safety  
This product data sheet applies only to the latest version of the corresponding safety document. Any updates to safety-related information consistent with legal requirements will only be reflected in the Safety Data Sheet, which will be updated and published. Information related to current classification and labelling, application and process methods, and more safety-related data can be found in the latest available safety data sheets.