PVB is polyvinyl butyral, soluble in methanol, n-propanol, isopropanol, propylene glycol ether, butyl acetate, acetic acid and the like. It has excellent flexibility and flexibility, and can be used as a safety glass interlayer film. Because PVB resin has excellent optical clarity, its refractive index is similar to that of glass. Optical distortion and The double phase ensures clear vision.
|ITEM AND INDEX||WW-B-10|
|White or slightly yellow power,NO visible impurity|
|Hydrogen chloride, ≤||0.01|
≥95(430nm wavelength spectrophotometer)
≥98(660nm wavelength spectrophotometer)
|Film(Haze),%,≤||0.30(Grade a) 0.40(Grade b) 0.60(Grade c)|
|Yellow index,%,≤||0.50(Grade a) 0.60(Grade b) 0.80(Grade c)|
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