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Dispersions & additives > for exterior paints

BTC’s product range covers dispersions, dispersing agents, defoamers, rheology modifiers and film-forming agents to formulate premium exterior paints. 

Our Acronal® product range offers intrinsic durability properties which are further strengthened by additional quality characteristics such as dirt pick-up resistance, colour retention or low cracking. 

Additives like our Dispex® range of dispersing agents are used to disperse and stabilize the pigments and fillers within paints and coatings. For paint producers, they represent an essential component as they provide colour strength, viscosity stability and prevent sedimentation of particles. 

Exterior paints need specific properties to be resistant enough over time and be able to cope with highly demanding weather conditions. BTC’s range of dispersions and additives allows paint producers to develop high-class paints that will keep facades looking fresher for longer.



Dispersing agents
Dispex Ultra®


Rheology modifier

Film-forming agent

Properties of dispersions & additives for exterior paints

The Acronal® product range is a water-based state-of-the-art family of binders which is preferably used in exterior applications. 

In combination with our comprehensive portfolio of formulation additives such as our Dispex®, Dispex Ultra®, Foamaster®, FoamStar®, Rheovis® and Loxanol® types we help our clients to create performance-driven exterior paints which meet the latest and most stringent environmental regulations.

Applications of our dispersions and additives

Dispersions for exterior paints

BTC’s Acronal® range for exterior paints covers styrene and pure acrylics which offer a very high durability against the influence of weathering. In addition, our dispersions – both pure acrylics and styrene acrylics have an outstanding chemical resistance, which is very important for exterior applications. 

Our range of Acronal® ECO solutions allow paint producers to create health-friendly paints which exceed regulatory standards, and which are in line with all relevant European eco labels for paints. 

Our range of Acronal® Hide grades offer an improved hiding power which allows paint producers to reduce their pigment and filler demands.

Acronal® PLUS grades enable paint producers to achieve superior properties such as 

  • easy-to clean surfaces and 
  • extremely elastic facade paints to bridge cracks. 

Acronal® EDGE is used to produce premium paints with superior performance. Our products prolong renovation cycles for exterior facades and let them remain as bright and shiny as on the first day. 

Dispersing agents for exterior paints

Dispex®, Dispex® HIDE and Dispex® Ultra dispersing agents are used to stabilize pigments and other particles within paints and coatings. For paint producers, they represent an essential component as they provide 

  • increased colour strength, 
  • outstanding viscosity stability, 
  • increased hiding power, 
  • low VOC values whilst being APEO-free, 
  • reduced sedimentation tendency of pigments and fillers. 

Defoamers for exterior paints

BTC’s Foamaster® and Foamstar® defoamers are important process aids throughout the paint production process as well as during application in order to 

  • suppress and destroy foam and its negative effects prior to and during application,
  • remove or inhibit air bubbles.

Rheology modifiers for exterior paints

Rheovis® rheology modifiers enable paint producers to adjust the flow behavior of paints. Subsequently, painters benefit from improved viscosity and application characteristics. 

BTC’s Rheovis® rheology modifiers 

  • reduce dripping and spattering of paint during roller or brush application, 
  • improve sag resistance of a paint by a rapid, but controlled viscosity increase after application,
  • prevent sedimentation of the pigments within a formulation during transport and storage of the paint.

Film-Forming agents

Our Loxanol® grades are used to support the film-forming process of a paint or coating. Within this product group BTC offers high-performance coalescing agents.

Further products for the coatings industry 

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About BTC

BTC Europe belongs to the world‘s leading chemical group, BASF – We create chemistry. BTC is BASF‘s European sales organization for chemical distribution. 
Our solutions for the architectural coatings industry cover besides dispersions and additives also pigments and pigment preparations in our colourants range.