Abstract: A powder coating composition of an intimate mixture comprising (A) 60 to 99 wt % of a mixture comprising at least one polyester resin and at least one (meth)acrylate resin, (B) 0 to 30 wt % of at least one cross-linking agent, (C) 0.1 to 10 wt % of at least one pigment, component (A) and component (C) are selected to provide the cured-powder coating composition with a low gloss of 1 to 20 gloss units at 60° angle according to DIN 67530 (ISO2813) and a surface structure having a value of Integral 1 in the range of higher than 8.00E+00 measured by the mechanical profilometry Fourier analysis, and the wt % are based on the total weight of the powder coating composition. The powder coating composition provides the desired special metallic effect of the coated surface which meets the metallic effect resulted with anodized aluminium.

Abstract: An anti-graffiti powder coating composition comprising (A) 30 to 80 wt % of a mixture of at least one polyester resin A having a hydroxyl number in the range of 30 to 60 mg KOH/g, a weight average molar mass Mn in a range of 3100 to 5000 and a glass transition temperature Tg of 40 to 60° C. and at least one polyester resin B having a hydroxyl number in the range of 250 to 350 mg KOH/g, a weight average molar mass Mn in a range of 2000 to 3000, (B) 10 to 40 wt % of at least one hardeners diisocyanates, polyisocyanates or urethdiones, and (C) 0.01 to 40 wt % of at least one coating additive, pigment and/or filler. The powder coating composition provide very good anti-graffiti performance over long time period and good coating properties.

Abstract: A fuel, particularly for Diesel engines, in microemulsion form, comprising a liquid fuel, an emulsifier and an emulsive agent, the emulsive agent having an HLB value higher than 9. The invention also relates to a method for preparing a fuel, particularly for Diesel engines, in microemulsion form, which comprises the mixing of a liquid fuel, particularly a liquid fuel for Diesel engines, an emulsifier and an emulsive agent, the emulsive agent having an HLB value of more than 9, and to a fuel which can be obtained by means of the method.

Abstract: A fuel in microemulsion form, particularly for Diesel engines, comprising a primary fuel constituted by mineral oils and/or vegetable oils, water, a lipophilic emulsifying agent (W/O) and a hydrophilic emulsifying/detergent agent (O/W), wherein the hydrophilic emulsifying/detergent agent (O/W) is a mixture of two or more polyol esters having different molecular weights.

Abstract: An apparatus and a method for forming stabilized atomized microemulsions from different liquids which are normally immiscible; the apparatus according to the invention comprises a primary chamber and a sequence of at least two cavitation chambers arranged in succession, means for feeding primary and secondary fluids into the primary chamber, and means for the exit of the formed microemulsion from the last cavitation chamber, the primary chamber and the cavitation chambers being fluid-connected to each other by way of fluid passage means which are adapted to produce a velocity of the fluids, during passage through the passage means, which gradually increases from the primary chamber toward the last cavitation chamber.

Abstract: In a process for producing stable emulsions of at least two substantially immiscible fluids, particularly emulsions of a liquid fuel with water, a considerable increase in the efficiency of the emulsion-formation process is achieved by injecting the fluids to be emulsified into an emulsification chamber provided with an injection system which imparts to the fluids a motion in a direction which is substantially perpendicular to the general direction in which the fluids travel through the emulsification chamber. This injection system can be provided by means of a diffuser having an inlet hole, through which a stream of liquid is fed in a substantially axial direction, and at least one outlet hole, which leads into the chamber and whose axis lies on a plane which is substantially perpendicular to the direction of the inlet stream.

Abstract: In a process for producing stable emulsions of at least two substantially immiscible fluids, particularly emulsions of a liquid fuel with water, a considerable increase in the efficiency of the emulsion-formation process is achieved by injecting the fluids to be emulsified into an emulsification chamber provided with an injection system which imparts to the fluids a motion in a direction which is substantially perpendicular to the general direction in which the fluids travel through the emulsification chamber. This injection system can be provided by means of a diffuser having an inlet hole, through which a stream of liquid is fed in a substantially axial direction, and at least one outlet hole, which leads into the chamber and whose axis lies on a plane which is substantially perpendicular to the direction of the inlet stream.

Abstract: In a process for producing stable emulsions of at least two substantially immiscible fluids, particularly emulsions of a liquid fuel with water, a considerable increase in the efficiency of the emulsion-formation process is achieved by injecting the fluids to be emulsified into an emulsification chamber provided with an injection system which imparts to the fluids a motion in a direction which is substantially perpendicular to the general direction in which the fluids travel through the emulsification chamber. This injection system can be provided by means of a diffuser having an inlet hole, through which a stream of liquid is fed in a substantially axial direction, and at least one outlet hole, which leads into the chamber and whose axis lies on a plane which is substantially perpendicular to the direction of the inlet stream.

Abstract: In a process for producing stable emulsions of at least two substantially immiscible fluids, particularly emulsions of a liquid fuel with water, a considerable increase in the efficiency of the emulsion-formation process is achieved by injecting the fluids to be emulsified into an emulsification chamber provided with an injection system which imparts to the fluids a motion in a direction which is substantially perpendicular to the general direction in which the fluids travel through the emulsification chamber. This injection system can be provided by means of a diffuser having an inlet hole, through which a stream of liquid is fed in a substantially axial direction, and at least one outlet hole, which leads into the chamber and whose axis lies on a plane which is substantially perpendicular to the direction of the inlet stream.

Abstract: In a process for producing stable emulsions of at least two substantially immiscible fluids, particularly emulsions of a liquid fuel with water, a considerable increase in the efficiency of the emulsion-formation process is achieved by injecting the fluids to be emulsified into an emulsification chamber provided with an injection system which imparts to the fluids a motion in a direction which is substantially perpendicular to the general direction in which the fluids travel through the emulsification chamber. This injection system can be provided by means of a diffuser having an inlet hole, through which a stream of liquid is fed in a substantially axial direction, and at least one outlet hole, which leads into the chamber and whose axis lies on a plane which is substantially perpendicular to the direction of the inlet stream.

Abstract: The present invention relates to a fuel for reducing the noxiousness of exhaust gases, particularly for internal-combustion engines. The fuel has the peculiarity of comprising a mixture of a combustible fuel with 10 to 42% water by weight with respect to the combustible fuel, with the addition of a lubricating antifreeze activator in an amount comprised between 0.5 and 2% by weight of the amount of combustible fuel. The mixture is atomized and stabilized by means of a turbine transducer which provides an electro-magneto-mechanical action, subjecting the mixture, in succession, to positive-pressure actions alternated with negative-pressure actions at high frequency.

Abstract: An apparatus is disclosed for emulsifying and atomizing fluid fuels with secondary fluids, in particular water, which has improved characteristics over commercially available apparata especially as regards the maximum mixable proportion of secondary fluid without undergoing efficiency deterioration, stability, and homogenization level. The apparatus comprises a first mechanical cavitation chamber wherein the fluid fuel and water are mixed and pretreated, a combined action cavitation chamber of a mechanical and electromagmetic type, and a final cavitation chamber, wherein homogenization of the fluid is completed. The combined actions within the intermediate chamber are achieved by generating within the chamber a centered corridor resulting from the effects of high pressure and vacua, and of an appropriate magnetic field. The invention also provides a method of treating fuel fluids by means of the apparatus illustrated.

Abstract: The apparatus comprises a periodic wave generating unit driving at least a piezoelectric transducer for generating ultrasounds, which latter includes a base block associated with a passage conduit and wherewith there are associated a plurality of piezoelectric buttons or pads interposed between different polarity electric contacts electrically coupled to the generating unit and clamped against the base block by means of a counter-block.