| 摘要 |
FIELD: personal usage items.SUBSTANCE: invention relates to dehydration indicators for introduction of absorbent into product of personal hygiene. Sensor of human body dehydration comprises a porous substrate, on part of which buffered ink system is applied. Mentioned ink include from 0.5 to 20 wt% of a weak polymeric base as buffer agent, a viscosity modifier and pH-sensitive dye. Polymer base is represented by polyallylamine, polyethylenimine, polyvinylamine hydrochloride or their combination; substrate is a cellulose material. Adding to clothing or personal hygiene absorbent product is also described containing mentioned dehydration sensor.EFFECT: buffered ink of dehydration sensor prevent dye leaching out of porous substrate during the analytical procedure providing colour stability and reliability of results in tracking body saturation with water.17 cl, 4 dwg, 1 tbl, 5 ex |
