12/31/2013

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Basis Polyurethane Curing the film in air can side reaction of isocyanate groups with water, leading eventually to the formation of urea linkages. The industry can be one and the same method to obtain different PU coating materials. For example, in the same pattern of production coatings, moisture curing, can be obtained on the basis of products alcoholysis of castor oil and glycerin, respectively, triethanolamine odnoupakovochnye dvuhupakovochnye and materials. To obtain two-component systems have found applications such as polyisocyanates, biuret-polyisocyanate how to cure without heating only in the presence of catalysts (octoate and naphthenate zinc). Coatings based on this have a lower hardness, but a good color - and weatherproof. The domestic industry produces aliphatic poliizo - cyanate, biuret based on hexamethylene diisocyanate and water. But they do not mix, so the water injected into the mixture with a solvent (dioxane or acetone). In the commercially available two-component system consisting of semi-finished products of enamel and a polyisocyanate curing agent mixed before use. Semi-finished enamel - suspension of pigments and fillers, additives to the target in a solution of resin. Hardeners are available in sets. Relatively new type of polyurethane coatings are aqueous compositions that are growing application, staining wood, plastic, metal and other materials. Especially popular are water dvuhupakovochnye polyurethanes. They are ideally suited for corrosion resistant coatings on metal. The major consumers of such materials are the automotive, automobile repair sector, as well as manufacturers of military equipment that use dvuhupakovochnye polyurethane dispersion with a volatile content less than 180 g / l, allowing form a thermo - and chemically resistant topcoat for aircraft and tactical weapons. The most common type of water paint for wood is a mixture of polyurethane dispersions and acrylic latexes, hybrid akriluretanovye dispersion and composition based on akriluretanov with particles of the core / shell....
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The Sadness We feel joy for what's new, but also the sadness by the change. Of course that there are currents in the losses, not everything means the same in the life. Of course the same thing is not losing a mascta very beloved, that a loved one. It is not the same to lose ten pesos that lose a hundred thousand. The intensity of what we wanted that outside and not so, is a very painful experience because it represents all our involvement in the matter, we take all the enthusiasm, we can bear, we assume and everything for what, so someone or seaweed decides it no longer wants, that already you don't care about the project or that better each who will stay with his life. Acceptance of the circumstances is a process that leads us to live a more realistic, less romantic way and perhaps, more satisfactory. Accept the conditions that we live good, bad or regular, is the only possibility to change them. The only change for such purposes is the internal, there is no more, nobody is going to do anything to give a turn to our lives. The acceptance has to do that although I want the world to change, things are in a certain way. In other words, I want a marriage happy and committed, and I put my enthusiasm, my delivery and my sympathy, but the other does not want to receive it, not interested in working for the couple, has other priorities. Then even though I want it intensely it may not be. In this case is that I have a relationship that I am not satisfied at all, or accept that I will live my whole life, or you decide to change it, finish it. Otherwise, I'm going to keep wearing me...