PRODUCT FOR THE RELEASE OF ACTIVE SUBSTANCES

WIPO Patent Application WO/2012/150459

A3

A delivery system for an active substance, comprising a substrate on which the substance is loaded for subsequent release,wherein: (i) the substrate has been at least partially coated with a polymer using plasma deposition (preferably pulsed plasma deposition); (ii) the active substance is present as a guest molecule within a cyclodextrin inclusion complex; and (iii)the inclusion complex is bound to the polymer through a chemical linkage formed between a hydroxyl group on the cyclodextrin and a functional group on the polymer. The system may be used to control the release of an active substance such as a perfume. Also provided are methodsfor preparing (a) the delivery system and (b) a functionalised substrate for use as part of the system, in which the polymer is suitably reacted with a cyclodextrin using an S N 2 nucleophilic substitution reaction, in particular a Williamson ether synthesis reaction.

JP3232751	VAPOR DEPOSITION PRODUCT AND ITS PRODUCTION
WO/1992/019803	METHOD FOR FINISHING TREATMENT OF MOVING TEXTILE MATERIAL
JP4527206	Surface coating

BADYAL JAS PAL SINGH (GB)
SCHOFIELD WAYNE CHRISTOPHER EDWARD (GB)
MORSCH SUZANNE (GB)

PCT/GB2012/050971

January 03, 2013

May 04, 2012

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SURFACE INNOVATIONS LTD (GB)
BADYAL JAS PAL SINGH (GB)
SCHOFIELD WAYNE CHRISTOPHER EDWARD (GB)
MORSCH SUZANNE (GB)

D06M10/10; A61K8/73; C08J7/12; C08J7/18; C09D105/16; D06M10/02; D06M15/03

WO2001083877A1

2001-11-08

DE19849464A1	2000-04-27
US20070161308A1	2007-07-12

BREWSTER, Andrea (Copa HouseStation Road, Cheddar Somerset BS27 3AH, GB)

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