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Differentiation Through Improved Slip and Hand Feel

Dow Corning® 205SL Additive and Dow Corning® 204SL Additive provide improved slip at the coating surface by effectively reducing the coefficient of friction (CoF) when compared to other competitor materials and to Dow Corning® 57 Additive, the standard Dow Corning® brand product for leveling, when used at the same addition level. The resulting slippery surface translates into improved hand feel, which can be directly appreciated by the end customer.


Figure 1: Dynamic coefficient of friction and hand feel properties of a solventborne, 2K PU wood coating containing Dow Corning® 205SL Additive versus competitor additives and Dow Corning® 57 Additive. Additives were added at 0.2 weight percent in the total formulation.

Dow Corning® 205SL Additive provides excellent slip and hand feel in a solventborne, 2K PU wood coating
 

Figure 2: Dynamic coefficient of friction and hand feel properties of a UV curing, acrylate-based varnish containing Dow Corning® 204SL Additive versus competitor additives and Dow Corning® 57 Additive. Additives were added at 0.2 weight percent in the total formulation.

Dow Corning® 204SL Additive provides excellent slip and hand feel a UV curing, acrylate-based varnish

 

High Performance with Good Recoatability

Recoatability often is a problem when slip additives are included in a coating formulation. Dow Corning 205SL Additive, Dow Corning 204SL Additive and Dow Corning 401 LS Additive overcome this problem. Laboratory studies have shown that at recommended use levels, they reduce the coefficient of friction without negatively affecting recoatability, regardless of formulation type.


Figure 3: Recoatability (1: poor; 3: excellent) of a solventborne, 2K PU wood varnish containing Dow Corning 401LS Additive versus competitor slip and leveling additives and Dow Corning® 57 Additive (dosages shown are by weight based on total formulation).

Dow Corning® 401LS Additive provides excellent recoatability in a solventborne, 2K PU wood varnish

 

Foam Control for Improved Processing and Appearance

Typically, silicone polyether copolymers act as surfactants in coating systems, stabilizing foam during processing and application. Dow Corning 205SL Additive and Dow Corning 401LS Additive, however, minimize foam stabilization. Dow Corning 205SL Additive even functions as an antifoam, bringing both enabling and problem-solving benefits to the formulator and reducing the amount of additives required in the formulation. By adding Dow Corning 401LS Additive, the coating will generate less foam during manufacturing and also will cause fewer defects during application.


Figure 4: Foam control using Dow Corning® 205SL Additive in multiple coatings formulations versus competitor additives and Dow Corning® 57 Additive. Additives were added at 0.2 weight percent in the total formulation. Foam control was assessed by measuring foam height after stirring at 5,000 rpm for 1 minute.

Dow Corning® 205SL Additive provides excellent foam control in multiple coatings formulations


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