Paint in can shows a viscosity different than reported on TDS, which provokes a beginning of thickening, like livering, often accompanied by opalescence (see those defects). Viscosity lower than standard shows a depolymerization of paint in time. N/C paints show typically this phenomenon.     REASON SOLUTION Defective production. Normally application of N/C paintsshowing lower viscosity thannormal does not involve anyproblem. In other kinds ofproducts, they must be replaced

Irreversible gelling of a paint, which is therefore no more usable REASONSOLUTIONStorage temperature is too high.No matter what cause would be,the product cannot be usedanymore and must be substituted,informing the supplier.Substitution is mandatory for PUhardeners, whose usage mightprovoke serious problemsStorage time has been too longfor the product.Intrinsic defect of the paint due toincompatibility among itscomponents.If in PU hardeners, high moistureabsorption due to imperfect canclosure.

It is the separation of the different pigments which compose a shade. Separation is due to incompatibility among the different resins in paint, incompatibility among pigments or high difference among pigments due to different specific weight. Before starting an industrial application of such paints, carry on tests to be sure that the application on panels doesn’t show such defects REASONSOLUTIONLong storageStir can vigorously as much as toreturn to a homogeneous…

Polymerization process of surface in a paint stored in cans, caused by reaction in time between Oxygen and moisture in air and paint REASONSOLUTIONDefective can closureVerify perfect closure of cans,both on new and most of all onalready opened ones after partialuse of paints. Each time skin mustbe removed, and paint filteredToo long storage timeReduce storage timeStorage building temperature istoo highStore paints at room Temp (18-20°C). Mostly P/E putties are verysensitive…

Strong viscosity increase in time of paint in can. This phenomenon is mostly detected during application by curtain coater, but can also appear when mixing the different components (A + B) REASONSOLUTIONLoss of solvents, due to adefective closure of the can inorigin or due to end-user who,after opening the can, left it openor wrongly closedAdd appropriate thinner whilestirring as much as to reach theright viscosity of the productThe storage temperature…