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BYK® -W 985

Technical Datasheet | Supplied by Byk (Altana Group)
BYK® -W 985 by Byk Altana Group is a solution of an acidic polyester. Acts as monofunctional, deflocculating wetting and dispersing agents. It wets the filler particles and lead to a moderate interaction of the particles. Its separation and turbidity may occur during storage and transportation. If necessary, warm up to 40 – 60°C and mix before use. It improves the wetting and dispersing speed of most common fillers such as calcium carbonate and aluminium trihydroxide. It dramatically reduces the viscosity so that a higher filler load is possible and does not usually prevent sedimentation. BYK® -W 985 is recommended for epoxy adhesives and suitable for PUR adhesives. Its recommended level is 0.5 - 1% based upon filler.
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Product Type
  • Wetting Agents
  • Rheology Modifiers / Viscosity Modifiers / Thickeners
  • Dispersing Agents
  • Fillers / extenders << calcium carbonate
  • Fillers / extenders << aluminum trihydroxide
Chemical Composition
Solution of an acidic polyester
Product Status
COMMERCIAL
Applications/ Recommended for
  • Adhesives
  • PUR adhesives
  • Polymers > Epoxies (EP)
  • Polymers > Polyurethanes > Polyurethane Dispersions (PUDs)
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