TAFIGEL® PUR 56

Non-ionic polyurethane in butyl triglycol/water, VOC free.

TAFIGEL PUR 56 is designed as an "associative thickener" which builds up and stabilizes viscosity by forming a network between polyurethane, binder molecules and pigment particles. TAFIGEL PUR 56 can be used alone or in combination with other TAFIGEL thickeners as well as with further thickener technologies. TAFIGEL PUR 56 is recommended for use in following systems: Interior and exterior paints, latex paints, anti-corrosive paints, emulsion plasters, adhesives and joint fillers.

Advantages of using TAFIGEL PUR 56:

• thickening independent of pH
• excellent brush handling
• good flow, leveling and gloss
• good spatter resistance
• very good color acceptance on tinting

The thickening effect of polyurethane thickeners can be affected by many factors including binder type, co-solvents, coalescing agents, surfactants/wetting agents, pigments and flattening agents. The interactions of TAFIGEL PUR 56 with these compounds allow varied possibilities for rheology adjustment.

TAFIGEL PUR 56 can be added undiluted to the grind and before adding the binder. For post-addition, the preparation of a masterbatch is possible with water or a suitable water/co-solvent mixture (e.g. water/Dowanol DPM, 75:25). Ladder studies are recommended to determine optimum levels. Normal dosage ranges from 0.3 - 2 % on total formulation.