Cosmetic Nanotechnology. Polymers and Colloids in Cosmetics by Sarah E. Morgan, Kathleen O. Havelka, Robert Y. Lochhead

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By Sarah E. Morgan, Kathleen O. Havelka, Robert Y. Lochhead

This symposium sequence publication will take on one of many quickest transforming into markets within the chemical within the US and all over the world: own care. via advances in nanotechnology there were major possibilities for brand spanking new advancements in fabrics and supply mechanisms for cosmetics and private care items. This booklet will tackle the commercially very important elements and supply applied sciences utilized in beauty nanotechnology: polymers and colloids. because greater than half the individuals are commercial researchers offering a viewpoint on real-life purposes of non-public care components, the insurance of this subject won't in simple terms be finished, yet completely adopt a lot wanted matters concerning study and improvement themes in beauty nanotechnology.

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These polymer comprise a water soluble (or polar) backbone with crystallizable long chains arranged along the polymer like teeth on a fine comb. The melting temperature can be tuned the distribution of side-chain lengths and their content along the chain. These polymers are dispersed in the desired oil and heated above their melting point. Thickening occurs upon cooling below the melting point of the side-chains. These interesting stimuli-responsive copolymers have been used in agriculture to coat seeds.

US Pat Application 2004/00338246, Feb 19, 2004. ; US Pat 6,800,276, (Oct 5, 2004), assigned to B A S F Matyjaszewski, K . ; PCT Int. Appl. WO 9718247 A1, (1997), Matyjasezwski, K : , J. ; Macromolecules, 1997, 30 4238. Nesvadba, P. ; ; Stauffer, W. ; 1999, P C T Int. A p p l . W O 9903894 A1. ; Hawker, C. ; Craig, J. ; 1998, PCT Int. WO-A-98/58974 Chong, Y . K . ; Le Tam P. ; Moad, G . ; Macromolecules, 1999, 32, 2071-2074. Mougin, N . ; US Pat 6,805,872, Oct 19,2004, assigned to L'Oréal. ; Tolchinsky, M .

Polymeric antimicrobials are now being developed and there is a possibility that these could be included in hand sanitizers for more durable antimicrobial effectiveness. 202 203 204 Polymeric Antimicrobials In recent years there has been a consumer-driven trend, especially in Europe, to reduce the amount of preservations in cosmetics. ; ACS Symposium Series; American Chemical Society: Washington, DC, 2007. 44 manufacturer would inflict an inadequately preserved product on the consumer. Manufacturers are, therefore, interested in exploring alternative routes to preservation.

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