Characterization                                          Hydrophilically  modified  aliphatic  polyisocyanate  based  on isophorone diisocyanate (IPDI).

Bayhydur 401-60 PGDA might be used as co-reactant for aqueous resins and as hardener for chemically resistant and weather-stable coating systems.

Form supplied                                       Approx. 60 % in propylene glycol diacetate

Solubility / thinnability                          Generally speaking, Bayhydur  401-60 PGDA can be diluted with    different

polar to unpolar aliphatic solvents that are common when formulating lacquers. With polar solvents dilution of down to 20 % solid content can be reached. The storage stability of the corresponding dilutions needs to be checked, thoroughly. Especially, when using benzines dilutions need to

be done with due care and skill. The addition of Bayhydur 401-60 PGDA to the benzine-dissolved binder is recommended. Only PU grade solvents (< 0.05 % water) should be used. Also, the solvents have to be free off reactive groups such as hydroxyl or amino groups.

Compatibility                                              Generally speaking, Bayhydur  401-60 PGDA can be mixed with various Desmodur - and Bayhydur - types, e.g. Desmodur N 3300 or N 3600, Bayhydur 3100, XP 2655 or XP 2547. However, the compatibility must be tested in each case. As well, Bayhydur  401-60 PGDA can be dispersed   in

various waterborne binders such as Bayhydrol - types, e.g. Bayhydrol A 2470, A 2646, A 242, A 2845 and U 2755. The overall formulation (solids content, co-solvent content, type of co-solvent) needs to be considered in order to achieve a stable and properly working formulation. In case you need technical support, please, ask your supplier.

Characteristic data*

*These values are provisional. Binding supply specifications will not be available until the final product data sheet is published.

Density at 20 °C                                 approx. 1.11                    g/cm3                                         DIN 51757

**These values provide general information.

Properties / Applications                       Bayhydur 401-60 PGDA can be easily emulsified into the aqueous phase of

a water-borne lacquers or adhesive and is mainly used as co-crosslinker  for

aqueous resins of the Bayhydrol range.

Coating characteristics of aqueous two-component polyurethane coatings can

be improved by addition of Bayhydur 401-60 PGDA to HDI based Bayhydur crosslinkers, such as Bayhydur XP 2655 or Bayhydur XP 2487/1.

Typical blends of Bayhydur 401-PGDA with said HDI-based Bayhydur crosslinkers contain 5-30 % of Bayhydur 401-PGDA on total solids of crosslinkers.

Benefits of Bayhydur 401-PGDA include for example:

Final performance properties, such as

        increase of surface hardness

        resistance to chemicals and solvents

Application properties, such as

        significantly longer pot-life, even at elevated processing temperatures

        faster drying

        improved robustness, including an increased blister free coating film thickness

Labeling and statutory requirements     This product data sheet is only valid in conjunction with the latest edition of the

corresponding Safety Data Sheet. Any updating of safety-relevant information

– in accordance with statutory requirements – will only be reflected in the Safety Data Sheet, copies of which will be revised and distributed. Information relating to the current classification and labeling, applications and processing methods and further data relevant to safety can be found in the currently valid Safety Data Sheet.

Further information                               The  product  is  used  mainly  as  a  hardener  in  coating  materials  or

adhesives. The handling of coating materials or adhesives containing reactive polyisocyanates and residual monomeric IPDI requires appropriate protective measures referred to in the safety data sheet. These products may therefore be used only in industrial or trade applications. They are not suitable for use