Solubility / thinnability
Generally speaking, Desmodur® BL 3175 SN has good compatibility with the solvents listed. However, the solutions formed must be tested for their storage stability. Desmodur® BL 3175 SN can be thinned to a solids content of 40 % by wt. with ketones, esters, ether esters and aromatics. It can be thinned to a solids content of 60 % by wt. with mixtures of higher boiling aromatics such as solvent naphtha® 100 and 150. Aliphatic hydrocarbons cannot be used.
Compatibility
Given equivalent crosslinking (NCO/OH = 1.0), Desmodur® BL 3175 SN is generally compatible with Desmophen® 651, 670, 680, 690, RD 181, A 160, various polyacrylates and with Desmophen®
T 1665. It can also be combined with various plasticisers, e.g. phosphoric acid, sulphonic acid, adipic acid and phthalic acid esters. The combinations should always be tested for their
compatibility
Properties / Applications
Desmodur® BL 3175 SN can be used as the hardener in colorfast and weather-stable, one-component polyurethane coatings. The stoving temperature can be significantly reduced by the addition of a catalyst, e.g. dibutyltin dilaurate (DBTL), without reducing the storage stability.The product is used in high-grade industrial finishes (electrical appliances, small
components, can coatings, coil coatings, etc.) and in primer surfacers and topcoats for automative finishing. Desmodur® BL 3175 SN can also be used as an additive in conventional stoving systems to improve the flexibility and adhesion.
