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WebGreen alternative cosolvents to N-methyl-2-pyrrolidone in water polyurethane dispersions† Lorena German,´ *a Jose Mar´ ´ıa Cuevas,a Ruben Cobos,´ a Leyre Perez-Alvarez´ b and Jose Luis Vilas-Vilela´ bc N-Methyl-2-pyrrolidone is a toxic dipolar aprotic solvent widely used in the synthesis of polyurethane dispersions (PUD). WebIf you have come across a printed circuit board, you are definitely familiar with their predominantly green color. The thin green coating on the upper and lower sides of a PCB is known as a solder mask. As mentioned earlier, there are instances where you only need to coat one side of your board. signals tracking
Green Polyurethane - ACS Community
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