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US 12,064,253 B2Granted
Sweat mapping method
AssigneeConopco, Inc.
InventorsTammie Rose Barlow, Susan Bates, David Mark Haddleton, Ezat Khoshdel, Gavin William Kirby
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Abstract
A method for mapping sweat production from the human skin, said method comprising the application of a polydiacetylene (PDA) prepared from a derivative of a conjugated diynoic acid having at least 18 carbon atoms, wherein the PDA changes colour when exposed to sweat, but does not change colour when exposed to pure water.
Claims14
A method for mapping sweat production from a human skin, comprising:
- applying to a surface of the human skin a polydiacetylene (PDA) prepared from a derivative of a conjugated diynoic acid having at least 18 carbon atoms;
- wherein the PDA is a homopolymer of 3-(pentacosa-10, 12-diynamido)propyl-imidazole or a salt thereof;
- exposing the surface of the human skin to sweat;
- and
- mapping a colour change of the PDA;
- wherein, when exposed to pure water, the PDA does not change colour.
3 more elements
A method of manufacture of a sweat monitoring device, the method comprising:
- (i) preparing a derivative of a conjugated diynoic acid having at least 18 carbon atoms,
- (ii) dissolving the derivative in a solvent and applying the resulting solution to a surface of a flexible film,
- (iii) evaporating the solvent from the flexible film,
- (iv) polymerising the derivative of the conjugated diynoic acid to give a polydiacetylene (PDA) upon the surface of the flexible film
- wherein the PDA is a homopolymer of 3-(pentacosa-10,12-diynamido)propyl-imidazole or a salt thereof.
2 more elements
Dependencies are inferred from the claim text.