Hollow Sphere Pigment HIQUE 2000 is styreneacrylic copolymer emulsion designed for paper coatings. Hollow sphere HIQUE 2000 is supplied as emulsion and it's particle size is about 1.0um with following structure(Fig 1.) Initially this hollow is filled with water in emulsion form. But after drying, water in hollow is substituted by air and this structure is useful in paper coating. Since Dow chemical develope the polystyrene base plastic pigment for paper coating on 1973, most of coated paper manufacturer use the solid form plastic pigment instead of mineral pigment in coating component. Its main advantages are reducing the roll temperature and pressure to get good gloss of coating, improvement of printing performance and reducing the paper weight. Hollow sphere is more advanced material than solid base plastic pigment. Main advantages of coated paper and paperboard using Hollow Sphere Pigment HIQUE 2000 are as following. Physical Properties Appearance Solid content Solid volume Specific gravity Viscosity pH Average particle size Milky white liquid. 26-27% CA. 50% 1.01-1.03 (at 25 ℃) 100cps max at 25deg ℃ 9 - 10 1.0 ㎛
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