Products

Bayhydrol® A 2646

Solubility / thinnability    The product is soluble in water.

Properties / Applications    On account of its outstanding mechanical and

                             chemical resistance, the product is particularly

                             suitable for the formulation of hard, high-gloss

                             sealers for mineral substrates and reactive resins

                             (EP, PUR). Furthermore, excellent accentuation of

                             the grain of the substrate (e.g. colored coatings)

                             is achieved.
                             The binder can also be used for the formulation of

                             high-grade low VOC coatings for use on substrates

                             such as wood, metal, plastic, etc.
                             The product can also be combined with other water-

                             reducible binders. On account of the many potential

                             co-reactants, compatibility testing should always

                             be carried out.
                             The high reactivity enables short drying times,

                             which contribute to enhanced productivity.
                             The viscosity of the product is largely governed by

                             the pH. As the pH may decrease during storage, a

                             decrease in viscosity is also to be expected. The
                             viscosity can be restored to its original value by

                             the addition of small amounts of triethanol amine.
                             Dowanol® PnB and triethanolamine are OH-functional

                             cosolvents/amines that react with isocyanates. They

                             are therefore reactive thinners and not

                             VOC-relevant pursuant to the Decopaint Directive

                              2004-42-EC.

Storage                      - Storage in original sealed Bayer MaterialScience

                              containers.
                             - Recommended storage temperature: > 0 - 30 °C.
                             - Protect from frost, heat and foreign material.

                               General information: The product is sensitive to

                               frost. 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.
                           The viscosity of the product is largely governed by

                           the pH. As the pH may decrease during storage, a

                           decrease in viscosity is also to be expected. The
                           viscosity can be adjusted to its original value by

                           the addition of small amounts of an aqueous 10 %

                           solution of Triethanolamine.
                           Contamination with certain bacteria, fungi or algae

                           may render 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.

Safety                  Hazards identification
                        Not classified as a hazardous product as per Council

                        Directive 2006/121/EC or 1999/45/EC.
                        The safety data sheet should be observed. This contains

                        information on labeling, transport and storage as well as

                        on handling, product safety and ecology.