Nā Mea Hoʻopale UnahiʻO nā Copolymers o ka hydroxypropyl acrylate a me ka acrylic acid, ma muli o kā lākou hana maikaʻi loa, ʻaʻole hiki ke pale wale i ka hoʻokumu ʻana a me ka waiho ʻana o ka calcium carbonate a me nā unahi calcium phosphate akā pale pū i ka waiho ʻana o ka paʻakai zinc a hoʻopuehu i ka hao oxide. I kēia manawa, hoʻohana nui ʻia lākou i ka mālama wai. Me ka hoʻomohala mau ʻana o ka ʻenehana mālama wai a me ka noiʻi a me ka hoʻomohala ʻana o nā mea mālama wai hou, ua hoʻohana pono ʻia ka ʻenehana mālama wai fluorescent tracing. ʻO kahi ala maʻalahi e loaʻa ai nā polymers fluorescent ma o ka copolymerization o ka acrylic acid, hydroxypropyl acrylate polymers, a me nā monomers fluorescent.