IN262826: A process for the preparation of polymer coated nanoparticle
Abstract
The invention provides process for the preparation of nanoparticle-polymer complex, as sustain releasing agent for oral care product. The invention demonstrates conditions for the layer-by-layer build-up of polymer multilayers on nanoparticles of size 5-50 nm in diameter. Polymer multilayers have been built using the following components: 1) a core of inorganic compound like silica, titania and/or clay; 2) a hydrophobic shell around the core of polyanion and polycation materials; and 3) the outer layer covering the shell of polyanion having affinity to the enamel of tooth. Then loading the nanoparticles formed as above with active agents like antibacterial and/or flavour compounds. The active agents getting localised in the hydrophobic shell of the nanoparticles for sustained release of the agents, and the aqueous solutions of coated particles being transparent and colourless.
Filing Date:
30-03-2007
Issue Date:
17-09-2014
Applicant:
CSIR-National Chemical Laboratory (CSIR-NCL), Pune
Patent No:
IN262826
Application No:
0696DEL2007
Inventor(s):
Kumaraswamy Guruswamy
IPC Classification:
C07C
Country:
India
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