JM ActiCare for Antimicrobial Rinse-Off Formulations

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JMAC TMJohnson Matthey Antimicrobial CompositeThe antimicrobial activity of silver has been known very long time.To take advantage of very powerful antimicrobial effect of the silver ion whilst keeping its reactivity under control, it is necessary toarrange for a method of „controlled release“ of silver ions, so that they are effectively released „on demand“. This is achieved bypreparing a structure known as a composite, of silver chloride and titanium dioxide – JMAC TM• The system works because an electron exchange occurs between the twocomponents, and this allows a slight degree of solubility of the silver ionsonce the composite is put into water. When this occurs, (see fig.) an ionicequilibrium is set up such that in deionised water some 20 to 40 parts perbillion of silver goes into solution, with all the rest of the silver stayingbound up in the composite. This equilibrium will remain in place indefinitely,until something occurs to remove silver ions from solution, whereuponfuther silver ions will be released from the composite to top up theequilibrium.• The JMAC TM range of biocides provides a release of silver ions ondemand. It can be seen that it will be possible to built into a formulation avery large „ antimicrobial capacity“ without increasing the biological activityof system at any given time.Johnson Matthey Antimicrobial Composite.AgCl coating20% of particleweightTiO 2TiO+++ TiO 22+ ++++ + + + + ++++ + + + + +++ TiO 2TiO+ +2TiO+2Saturatedsolution of Ag +Cl -JMAC for Antimicrobial FormulationsPeter Klug, Sonja Gehm BU Industrial & Consumer Specialties, Personal Care (Copyright Clariant. All rights reserved.)28.05.2010Slide 4
Deposition Study on HairStudy design• Hair tresses: European brown hair and European blond,bleached hair• Shampoo base: SLES : CAPB = 7:3,15 % active surfactant,containing the maximum allowed content of JM ActiCare (0.2 %)• The hair tresses were washed 1 or 3 times with the above shampoo base• After drying, the hair tresses were reduced to ashes and the silver content analyzed byETAAS (electro thermal atomic absorption method)JMAC for Antimicrobial FormulationsPeter Klug, Sonja Gehm BU Industrial & Consumer Specialties, Personal Care (Copyright Clariant. All rights reserved.) 28.05.2010Slide 5
Page 2 and 3: “Silver inside”- the new trend
Page 6 and 7: Deposition of silver after washing
Page 8 and 9: Study results• The study shows a
Page 10: JMAC TM range• JMAC Composite PG

JM ActiCare for Antimicrobial Rinse-Off Formulations

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