Products

Desmodur  N 3900

Solubility/thinnability  Desmodur® N 3900 is compatible with the following solvents
                         ethyl acetate, butyl acetate, 1-methoxypropylacetate-2,

                         acetone, methyl ethyl ketone, methyl isobutyl ketone,

                         cyclohexanone, toluene, xylene,solvent naphtha® 100 and

                         mixtures thereof.
                         Aliphatic hydrocarbons are not suitable as solvents.
                         Desmodur® N 3900 should not be thinned to below a solids

                         content of 40 % by wt. Prolonged storage of a solution

                         with a lower solids content may
                         result in turbidity and sedimentation.

Compatibility           Desmodur® N 3900 can be mixed with the following Desmodur

                        and Desmophen® products:Desmodur® N 75, N 100, N 3200,

                        N 3300, N 3390, N 3400, N 3600 and Z 4470;
                        most polyester-based Desmophen® products such as Desmophen

                        670,680, VP LS 2971, VP LS 2089 and VP LS 2107; Desmophen

                        A products (acrylates).
                        It is incompatible with Desmophen® 650 and 651.
Properties/Applications Desmodur® N 3900 is used to formulate high-solids

                        systems for automotiverefinishing, transportation

                        coating and plastics coating.

                        Storage - Storage in original sealed Bayer

                        MaterialScience  container.
                        - Recommended storage temperature: 0 - 30 °C.
                        - Protect from moisture, heat and foreign material.
                        General information: The product is sensitive to

                        moisture. Storage at higher temperatures will result

                        in increase of color and viscosity. Storage at

                        significant lower temperatures will result in

                        solidification. This solidification is reversible
                        by briefly heating the product without adversely

                        affecting the quality of the product.

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 perio