Nuvis FX 1070

Hydrofobic urethane polymer

Condea Servo

Á÷±äµ÷ÕûÆ÷/Ôö³í >> ÁªºÏ >> ÊèË®ÒÒÑõ¾Û°·Ö¬ (HEUR) Rheology Modifier/ Thickener >> Associative >> Hydrophobically modified ethoxylate urethane (HEUR) ´¼ËáÊ÷Ö¬ Alkyd Resins Í¿²ã >> Ë®Éú Coatings >> Waterborne Water NUVIS Thickening Agents, Rheology Modifiers NUVIS FX 1070 High Shear PUR-thickener for Aqueous Systems, NO-VOC GENERAL INFORMATION NUVIS FX 1070 is a NO-VOC liquid rheology modifier for aqueous coatings. NUVIS FX 1070 increases primarily the high-shear viscosity, resulting in more Newtonian¨Cviscosity profiles for e.g. dispersion paints. APPLICATION AND PROPERTIES NUVIS FX 1070 is a typical ¡°High-Shear Thickener¡±. This results in optimized rheological properties. Film-build, brushing characteristics, edge covering and appearance are improved compared to conventionally thickened aqueous coatings. The low- and medium-shear viscosity is barely influenced. This means that the ¡°appearance viscosity¡± of the paint changes little as with the anti-sagging properties as such, after the addition of NUVIS FX 1070. Excellent results have been obtained using NUVIS FX 1070 in conjunction with our PUR-thickeners NUVIS FX 1010, FX 1050 or FX 1100. In this way the right balance between medium- and high-shear viscosity can be reached. NUVIS FX 1070 belongs to the class of associative polyurethane thickeners. Unlike the first generation of these thickeners, NUVIS FX 1070 forms extremely strong bonds with the surface of the polymeric binder particles. It is assumed that these interactions are not destroyed even when applying high mechanical forces, for example during brushing or rolling application procedure of the paint. The unique structure of NUVIS FX 1070, however, avoids the building of a dense and strong network, even if no or low-shear forces are being applied. Therefore NUVIS FX 1070 has only a limited influence on the low- and medium-shear viscosity of the paint. FEATURE -> CONSEQUENCE Based on poly-ether polyurethane -> provides longterm viscosity stability -> improves weathering -> less sensitive to hydrolysis -> decreased water sensitivity Does not contain organic solvents -> ideal for NO-VOC and -> low odour paints Increases high shear viscosity without effecting low shear viscosity -> improved brushability -> higher film build -> improved flow and levelling Low range of polydispersibility -> less syneresis effects NUVIS FX 1070 is applicable to a wide variety of aqueous paints, based on e.g. polymeric dispersions, alkyd emulsions, hybrid emulsions. The thickening properties being obtained are a result of the interaction of NUVIS FX 1070 molecules and the binder particle surfaces, therefore the effectivity is largely determined and is dependent upon the binder surface characteristics. DOSAGE NUVIS FX 1070 is preferably added to the milling paste. However, good results are obtained with post-addition NUVIS FX 1070 during the let-down stage. In this case the compatibility with the paint system should be checked carefully. The high affinity of NUVIS FX 1070 to the surface of the polymeric particles may result in a locally too spontaneous inter-action followed by coagulation or flocculation. If this effect occurs, we recommend to predilute NUVIS FX 1070 with water, e.g. to a 10% solids solution. The increase of the high-shear viscosity is in relation to the amount of NUVIS FX 1070 used. The quantity of NUVIS FX 1070 to be used is also strongly dependent on the required rheology for the particular paint. In most cases a concentration of 0.5 ¨C 3.0% NUVIS FX 1070 is sufficient. However, it is recommended to check the optimum dosage and compatibility for each case individually. In most formulations NUVIS FX 1070 will be used in combination with a second thickener (e.g. NUVIS FX 1010) to obtain the desired balance for the total rheology profile. In that case NUVIS FX 1070 will be added to the paint as a second thickener to reach the desired high-shear viscosity (ICI-viscosity). NO-VOC liquid rheology modifier for aqueous coatings, based on polymeric dispersions, alkyd emulsions, hybrid emulsions. Provides longterm viscosity stability, improves weathering, less sensitive to hydrolysis, decreases water sensitivity. Ideal for NO-VOC and low odour paints. Increases high shear viscosity without effecting low shear viscosity resulting in more newtonian¨Cviscosity, improves brushability, improves film build, improves flow and levelling. Low range of polydispersibility, less syneresis effects. The thickening properties being obtained are a result of the interaction of this molecules and the binder particle surfaces, therefore the effectivity is largely determined and is dependent upon the binder surface characteristics. Preferably added to the milling paste. Good results are obtained with post-addition during the let-down stage. Recommended usage level: 0.5 ¨C 3.0%. In most formulations, used in combination with a second thickener to obtain the desired balance for the total rheology profile. In that case this product will be added to the paint as a second thickener to reach the desired high-shear viscosity (ICI-viscosity).