ADDITOL® XL 186

Identification

CASE Ingredients Functions

Adhesion PromoterCoupling Agent

Product families

Other characteristics

Brand

ADDITOL

Features

Chipping Resistance, Corrosion Resistance, Good Metal Flake Orientation, High Impact Resistance, High Pigment Loading, High Reactivity, High Temperature-Curing, Improved Chemical Resistance, Improved Edge Coverage, Improved Mechanical Resistance

Functions

Adhesion Promoter, Coupling Agent

Labeling Claims

• APEO-Free, Monomer-free
• APEO-Free
• Monomer-free

Markets

• Automotive & Transportation
• Paints & Coatings

Use Levels

0.3– 1.0 % total

Dilutability

Additol XL 186 can be diluted with ethers and ketones as e. g. diglycol dimethyl ether or methyl ethyl ketone. Stable solutions are obtained as long as the Additol content remains below 30 %. It is very soluble in alcohols, however the solutions are not chemically stable (alcoholysis) and must therefore be used immediately after preparation.

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Technology

CASE Ingredients

Suggested Uses

Additol XL 186 is a specific, high efficiency additive which improves the intercoat adhesion of top coats or surfacers to primers. It is compatible with coatings, so that, as long as the recommended amounts of addition are followed, it does not give rise to surface defects or the reduction of film properties.; The improvement of adhesion has a favorable influence on the mechanical properties of the coating and improves the anticorrosion properties; weather resistance and storage stability are unchanged.; In the case of formulations containing acid-sensitive organic pigments, it may lead to color changes: in such cases it is necessary to check the compatibility in preliminary tests.; Additol XL 186 may be combined with anionic and nonionic surfactants. However, in the case of cationic products, the compatibility must be checked in preliminary tests, since the danger of mutual coprecipitaion exists and the gloss of the coating may be reduced. An improvement in the adhesion direct to metal of stoving enamels and very rapid air drying paints on sheet iron can be observed in many cases.; In oxidatively drying coatings, the choice of too high dosage may inhibit the drying properties. After dilution with a suitable waterthinnable organic solvent, Additol XL 186 can also be used in anionically stabilized waterborne paints, the pH value of the paint system must be adjusted.

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Special Properties

Additol XL 186 improves the adhesion of stoving enamels and fast drying air drying paints on sheet iron, and in particular, the intercoat adhesion of multi-coat paint systems

Storage and Handling

At temperatures up to 25 °C storage stability packed in original containers amounts to at least 730 days. Additol XL 186 may crystallize but however becomes liquid again at 30 °C

Processing Information

Additol XL 186 can be added in any stage of the coating manufacture. Most favorable is the addition in the let-down stage, prior to the adjustment with solvents, otherwise it can lower the viscosity. Prior thinning of Additol XL 186 with methyl ethyl ketone or diglycol dimethyl ether simplifies the dosage. Additions of 0.3 - 1 % Additol XL 186 on the total formulation are recommended.

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Distinguishing Features

Additol XL 186 has a significantly higher acid value than Additol XL 180. Thus the intercoat adhesion of multi-coat paint systems is improved and the volatility reduced to a very low level.

Compatible Substrates and Surfaces

Metal