The process provides a new whitewash material, which is prepared by making startch and sodium hydroxide into a colloid, and mixing the colloid with talcum powder and heavy calcium carbonate. The material has stronger adhesiveness, and no peeling of the coating for longtime, no color changes and no powder loosening after clashed or wiped. Moreover, by using cold water to prepare it for use without immersing and no precipitation after long storage of the slurry. Whiteness after applied is higher and it is nonpoisonous and odorless. |