BYK® -W 961

Solution of an alkylammonium salt of a polycarboxylic acid. Acts as wetting and dispersing agent. It bridges between the pigment particles are built, thereby creating three-dimensional network structures. The controlled flocculation mechanism prevents settling, sagging, flooding and floating. It is an anti-settling additive specifically recommended for mineral filled polyurethane systems. The active substance is dissolved in propylene glycol which can cross link during the reaction with NCO. Used for PUR adhesives. Its recommended level is 0.5-1.5% additive based upon filler.