BYK-P 104 S

These additives lead to a controlled flocculation of pigments. „Bridges“ are formed between single pigment particles causing three-dimensional structures to develop. Through controlled flocculation of pigments, flooding and floating, settling, and sagging of pigments is avoided.

BYK-P 104 S can be used in the same systems as BYK-P 104. The additive also contains a small amount of a polysiloxane copolymer to more effectively avoid flooding. This silicone content is additionally helpful in preventing Bénard cells and silking, and also improves surface slip, leveling and orientation of flatting agents or aluminum flakes. Therefore it is oftentimes not necessary to add a separate dosage of an otherwise needed silicone additive.

Incorporation and Processing Instructions: For optimum performance, these additives must be incorporated into the millbase before addition of pigments. Before processing, BYK-P 105 should be preheated until the additive has good flow properties. This leads to more accu- rate dosing.

Coatings Industry
Special Features and Benefits
BYK-P 104 S provides a targeted, controlled flocculation of the pigments. Bridges are built between the individual pigment particles, thereby creating three-dimensional networks. This controlled flocculation of the pigments primarily prevents flooding and floating along with settling and sagging. BYK-P 104 S is particularly suited to medium-polarity to high-polarity coating systems to prevent the flooding and floating of titanium dioxide in combination with colored pigments. It has a limited compatibility with white spirit. In many cases, anticorrosive
properties are improved when used in protective primers. BYK-P 104 S also contains a small quantity of a polysiloxane copolymer to improve flooding/floating behavior. This also prevents the formation of Bénard cells and improves the surface slip and leveling, and also the orientation of matting agents and aluminum pigments. In the majority of cases, it is no longer necessary to add the silicone additives which are usually required.

Recommended Levels
Amount of additive (as supplied) based upon pigment:
Inorganic pigments: 3-10%
Titanium dioxides: 0.5-2.5%
Organic pigments: 10-20%
The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions
For optimum performance, the additive must be incorporated into the millbase before addition of pigments.

White spirit-based coating systems or those that are diluted with white spirit have a limited compatibility. The additive is also available without the polysiloxane copolymer under the name BYK-P 104.

Solution of a low molecular weight, unsaturated polycarboxylic acid polymer and a polysiloxane copolymer

Products have limited compatibility with mineral spirits or systems reduced with mineral spirits.

Drums and pails Containers not completely emptied must be closed immediately after use!

Separation or turbidity may occur during storage and transportation. Mix well before use. Warm to 30-60 °C and mix well.

Separation or turbidity may occur during storage and transportation. Mix well before use. Warm to 30-60°C (90-140°F) and mix well.