Abstract: There is provided herein a water-based two-component polyurethane dispersion prepared from combining (a) an aqueous polymer emulsion comprising one or more emulsifiable polymers and one or more polyols, wherein the aqueous polymer emulsion has a Tg lower than about 20 degree C. and (b) one or more isocyanates.

Abstract: A method for identifying physiological conditions associated with the pH or the buffer capacities of biological fluid secreted from a person, which comprises providing a secretion-monitoring article comprising a body that includes an absorbent material for absorbing a biological fluid secreted from a person and an indicator system having a hydrophobic chemical composition comprising an indicator agent and an ion-balance reagent, wherein the ion-balance reagent is a quaternary amine; wearing the article in a position to receive the biological fluid secreted from the person; visualizing the indicator system for an indication of physiological conditions associated with the pH or the buffer capacities of the biological fluid, which indication is stable for at least 48 hours.

Abstract: A secretion-monitoring article for identifying a secreted biological fluid comprising a body with an absorbent material for absorbing a biological fluid secreted from a person and an indicator system. The indicator system comprises an indicator agent and an ion-balance reagent, wherein the indicator system provides an indication of physiological conditions associated with the pH or the buffer capacities of the biological fluid, which indication is stable for at least 48 hours, preferably at least 72 hours. The article can be embodied as a swab, gauze, shield, hygienic napkin, diaper or interlabial absorbent structure and can be used to indicate the presence of amniotic fluid, or secretions associated with bacterial vaginosis without giving a false positive result upon exposure to urine or drying out.