>>>Paper sizing is another major application of PVA. Completely
hydrolyzed PVA provides good strength and wet resistance, compared to
styrene-butadiene latex copolymer (which requires twice as much),
casein, starch, etc. (often require 3x as much). Patents for inkjet
papers often mention PVA with colloidal silica as the binder to coat
on paper, which has such desirable properties as quick absorption of
moisture with little spreading and dye penetration.>>>
That is why PVA is used to manufacture polarizer filters and Vectographs.
Bob
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Received on Sun Mar 26 17:13:43 2006
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