Dehysol

Alkyl substituted acid amide

Cognis

流变调整器/增稠 Rheology Modifier/ Thickener 丙烯酸/丙烯酸盐树脂 Acrylic/Acrylate Resins 醇酸树脂 Alkyd Resins 氨基树脂 Amino Resins 氯化橡胶 Chlorinated Rubber 涂层 >> 由溶剂生成 Coatings >> Solventborne higher aromatics Rheology additive for producing a moderate viscosity increase and uniform film thickness, for reducing both cobwebbing of solvent based paint systems and blistering in stoving enamel films. DEHYSOL is an alkyl substituted acid amide in the form of a gel in solvents. In solvent-based paint systems DEHYSOL moderately increases viscosity. The resultant degree of thickening is mainly thixotropic and is largely reduced under the influence of mechanical work applied by brushing, spraying, rolling, etc., but it is quickly restored when the mechanical stress ceases. These properties give paints made with DEHYSOL the following advantages: reduced sagging, better edge protection, thicker and more uniform dipped coatings, more body. When DEHYSOL is used, it reduces the kind of blistering liable to occur on application to warm metal surfaces (e.g. ship's sides). Blistering and bubbling of thick film stoving paints which are flashed-off for short times is reduced. Cobwebbing, e. g. of chlorinated rubber paints, is also lessened. These properties may be explained by a degree of solvent retention which in practice, however, does not impair drying. As a substituted amide DEHYSOL is chemically inert as far as its activity in the paint system is concerned. No impairment of corrosion behaviour of paints has yet been observed. When more than 1.5% on the total paint system is added, the gloss may occasionally be reduced, but this depends largely on the nature of the binder and the pigmentation level. DEHYSOL is compatible with many different paint systems. The following have been tested: air drying and stoving alkyd paints, alkyd/amino resin systems, acrylics, chlorinated rubber. We do not recommend using DEHYSOL in unsaturated polyester resins and nitrocellulose lacquers. Polyurethane paints made with DEHYSOL are liable to gloss reduction. How far this is acceptable must be left to the judgement of the paint manufacturer. Considering the many different ways in which binders, solvents and pigments can be combined in paint systems, we recommend making appropriate laboratory tests before using DEHYSOL. DEHYSOL is generally added in amounts between 0.5 - 2.0% by weight on the overall paint system. The required effects are normally obtained with about 1% by weight. Gel of alkyl substituted acid amide in solvents. Used as a rheology additive for producing a moderate viscosity increase and uniform film thickness, for reducing both cobwebbing of solvent based paint systems and blistering in stoving enamel films. Gives reduced sagging, good edge protection, and thick and uniform dipped coatings. Offers compatibility with many different paint systems such as air drying and stoving alkyd paints, alkyd/amino resin systems, acrylics and chlorinated rubber. <br> Use level: 0.5-2.0% by weight on the overall paint system.