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Bayhydrol A 2457

Characterization Anionic polyacrylic dispersion.
As a binder in the formulation of water-reducible two-component coatings and
sealers for mineral substrates and reactive resins (EP, PU).
Form supplied approx. 41 % in water
Specification
Property Value Unit of measurement Method
Non-volatile content
(1 g/1 h/125 °C/convection oven)
38.5 - 41.5 % DIN EN ISO 3251
Viscosity at 23 °C
at 23 °C, D = approx. 42 s-1
max. 100 mPa·s DIN EN ISO 3219/A.3
pH
(1 : 3 in demineralised water)
7.5 - 9 DIN ISO 976
Other data*
Property Value Unit of measurement Method
Hydroxyl content, (supply form) approx. 1.1 % internal method
Density at 20 °C approx. 1.1 g/ml DIN EN ISO 2811-2
*These values provide general information and are not part of the product specification.
Bayhydrol A 2457

Solubility / thinnability with water
Properties / Applications Because of its outstanding mechanical and chemical resistance properties the
product is ideally suited for the formulation of sealers for mineral substrates
and reactive resins (EP, PU).
Combination with other water-reducible binders is possible. Because of the
many potential combination products, compatibility must always be tested.
Storage - Storage in original sealed Bayer MaterialScience containers.
- Recommended storage temperature: > 0 - 30 °C.
- Protect from frost, heat and foreign material.
General information: Short-time cooling down to -18 °C does not typically
damage the product. Prolonged freezing can damage the product irreversibly.
Prolonged storage at higher temperatures may result in a decrease of viscosity
and/or an increase of average particle size, possibly resulting in sedimentation
or coagulation. Contaminatio the product unusable.

Storage time Bayer MaterialScience represents that, for a period of six months following the
day of shipment as stated in the respective transport documents, the product
will meet the specifications or values set forth in section "specifications or
characteristic data" above, what ever is applicable, provided that the product is
stored in full compliance with the storage conditions set forth in and referenced
under section "storage" above and is otherwise handled appropriately.
The lapse of the six months period does not necessarily mean that the product
no longer meets specifications or the set values. However, prior to using
said product, Bayer MaterialScience recommends to test such a product if it
still meets the specifications or the set values. Bayer MaterialScience does
not make any representation regarding the product after the lapse of the six
months period and Bayer MaterialScience shall not be responsible or liable in
any way for the product failing to meet specifications or the set values after
the lapse of the six months period.