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Method for the spray application of polymeric-containing liquid coating compositions using subcritical compressed fluids under choked flow spraying conditions
Method for the spray application of polymeric-containing liquid coating compositions using subcritical compressed fluids under choked flow spraying conditions
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机译:在节流喷涂条件下使用亚临界压缩流体喷涂含聚合物的液体涂料组合物的方法
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摘要
Processes are disclosed for the use of subcritical compressed fluids, such as carbon dioxide or ethane, to reduce viscosity and to enhance atomization when spray applying coating compositions containing low molecular weight polymers to substrates, by using spray conditions that produce choked flow in the liquid mixture being sprayed, wherein the subcritical compressed fluid is a gas at standard conditions of 0° C. temperature and one atmosphere pressure and is miscible with the coating composition.
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