Additive TI Monofunctional isocyanate Bayer-Börchers Moisture scavenger Polyurethane Additive TI 9 monofunctional isocyanate Description Additive TI is a reactive monofunctional isocyanate of low viscosity which reacts with water generating an inert amide. Additive TI eliminates slight parts of humidity and prevents moisture-related problems in the formulation of polyurethan coatings. Properties Additive TI is used for dehydration of solvents, fillers, pigments and bituminous tars. It rapidly reacts with water and generates carbon dioxide and toluenesulfonamide which is generally inert towards further reaction with alkyl and aryl isocyanates, and is usually soluble in common coating solvents. Additive TI does not cause further film yellowing. By application of Additive TI in a polyurethan coating formulation moisture-related problems such as gloss reduction, haze, yellowing and reaction foam will be prevented. Additive TI can also react with other active hydrogen compounds, such as alcohols, phenols, amines, amides and so on. Applications Additive TI eliminates moisture introduced with solvents, pigments, and fillers in 1-component as well as in classical 2-component PU systems. Furthermore Additive TI is recommended for the storage stabilization of purified diisocyanates against decomposition and discoloration. Mixing and addition rate As a packing stabilizer for moisture-curing 1-component PU systems Additive TI can be added into the finished coatings. When the deareation is finished the packing of these materials can take place. In formulation of classical 2-component PU systems pigments and fillers are suspended first in the solvent and then treated with Additive TI. Experience suggests the addition rate of Additive TI between 0,5 - 4% of the total formulation weight( sufficient for 0,05 – 0,3% moisture. To ensure complete reaction it is recommended to add the polyol- and isocaynate-component after a processing period of 24 hours. A surplus of Additive TI can react with polyols. Best results are obtained when the moisture content can be determined accurately so that the addition rate of Additive TI can be calculated. 12g of Additive TI is needed theoretically to eliminate 1g of water introduced by solvents. Experience has shown, however, that the reaction is more effective in the presence of a surplus of Additive TI, i.e. it is preferable to use 24g of Additive TI for reaction with 1g of water from solvents. After the addition of Additive TI these solvents are ready to use within several hours. Reactive monofunctional isocyanate which reacts with water generating an inert amide. Eliminates slight parts of humidity and prevents moisture-related problems in the formulation of polyurethan coatings. Used for dehydration of solvents, fillers, pigments and bituminous tars. Rapidly reacts with water and generates carbon dioxide and toluenesulfonamide which is generally inert towards further reaction with alkyl and aryl isocyanates, and is usually soluble in common coating solvents. Does not cause further film yellowing. In a polyurethan coating formulation moisture-related problems such as gloss reduction, haze, yellowing and reaction foam will be prevented. Can also react with other active hydrogen compounds, such as alcohols, phenols, amines, amides and so on. Recommended for the storage stabilization of purified diisocyanates against decomposition and discoloration. As a packing stabilizer for moisture-curing 1-component PU systems, can be added into the finished coatings. When the deareation is finished the packing of these materials can take place. In formulation of classical 2-component PU systems pigments and fillers are suspended first in the solvent and then treated with this additive. Recommended usage level: between 0,5 - 4% of the total formulation weight sufficient for 0,05 – 0,3% moisture. To ensure complete reaction it is recommended to add the polyol- and isocaynate-component after a processing period of 24 hours. A surplus can react with polyols. 12g is needed theoretically to eliminate 1g of water introduced by solvents.The reaction is more effective in the presence of a surplus, i.e. it is preferable to use 24g for reaction with 1g of water from solvents. After the addition these solvents are ready to use within several hours.