Technical data

Solids content 49 – 51 %
pH value 6,0 – 7,0
Viscosity 200 – 400  mPas
Glass transition
temperature    approx. – 5 °C

Application area

Due to its low content of volatile organic compounds (VOCs) Styrofan 5517 is  suitable for the manufacture of lowemission building products. No solvents
are needed for film formation.The polymer film of Styrofan 5517 is characterized by its high cohesion, flexibility and resistance to water.With Styrofan 5517 it is possible to formulate universal primer for absorbent and nonabsorbent substrates. The fine particles of the dispersion result in deep penetration in porous substrates. The low water absorbency of the dispersion film makes it possible to seal the surface effectively. At the same time, the high pigment binding power of Styrofan 5517 stabilizes dusty surfaces. The high inherent strength of the dispersion film has a very good adhesion-promoting effect.Other typical uses are paste-type tile adhesives (D1).

Processing

Styrofan 5517 can easily be incorporated in formulations with all standard mineral fillers if there is a high pigment volume concentration (PVC). In this
connection, the flexible nature of the dried formulations is retained up to a PVC of about 40 %.If required, the stability of highly filled formulations can be ensured with small quantities of dispersants such as Dispex®CX 4320. The viscosity level can be adjusted with cellulose ethers and polyacrylates such as Rheovis®AS 1125 or Rheovis HS 1169. Standard commercial antifoams such as FoamStar®PB 2706 can be used to suppress foaming.Although Styrofan 5517 is protected against microbial attack, preservatives must still be added to the finished products to ensure consistent quality even after a long time in storage.With regard to the proposed formulation, the compatibility and effectiveness of the various constituents used should be checked out in appropriate preliminary tests.