PORTAFILL® H 5 is produced from carefully selected, naturally occurring, platy, sedimentary mineral, consisting predominantly of partially hydrated magnesium-calcium carbonate. The standardised quality of PORTAFILL® H 5 is guaranteed by means of an ISO 9001 certified quality management plan. The chemical composition of raw material and product is closely monitored and particle size kept within a narrow variation.

Particle shape, fineness and high brightness make PORTAFILL® H 5 a very efficient extender for TiO 2 in paint, paper and board applications. Its platy particle shape and very fine particle size make PORTAFILL® H 5 an effective rheology modifier in aqueous suspensions and other fluids. It is therefore valued for applications in a/o adhesives, sealants and plastisols.