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Spray-drying process for the manufacture of dye-loaded particles.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science. KTH, School of Chemical Science and Engineering (CHE), Chemistry, Physical Chemistry (closed 20110630).
2007 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

According to a first aspect of the invention, a process is provided for the prepn. of amorphous particles comprising a homogeneous distribution of one or more dyes encapsulated by an amorphous, siliceous encapsulating agent, the process comprising: (a) providing a precursor of the encapsulating agent in liq. form; (b) providing the one or more dyes in liq. form; (c) mixing the liq. forms; (d) spraying the mixt. to form droplets comprising the one or more dyes and encapsulating agent; and (e) heating the droplets to form the particles comprising the one or more dyes encapsulated by the siliceous encapsulating agent; wherein at least one of the liq. forms provided is aq. and the or each aq. liq. form is acidic. According to a second aspect of the invention, encapsulated dyes made by the process of the first aspect of the invention are provided. [on SciFinder(R)]

Place, publisher, year, edition, pages
Procter & Gamble International Operations SA, Switz. . , 2007. no WO2009022308A2
Keyword [en]
dye encapsulated spray drying process
National Category
Other Chemistry Topics
Identifiers
URN: urn:nbn:se:kth:diva-78139OAI: oai:DiVA.org:kth-78139DiVA: diva2:497497
Patent
EP 2025720 (2010-12-08)
Note

US 8168095-B2 (2012-05-01); JP 5081975-B2 (2012-11-28)

Available from: 2012-02-10 Created: 2012-02-07 Last updated: 2013-08-06Bibliographically approved

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