发明名称 |
SPRAY-DRYING PROCESS FOR THE MANUFACTURE OF DYE-LOADED PARTICLES |
摘要 |
<p>According to a first aspect of the invention, a process is provided for the preparation 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 liquid form;
(b) providing the one or more dyes in liquid form;
(c) mixing the liquid forms;
(d) aerosolizing the mixture 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 liquid forms provided is aqueous and the or each aqueous liquid form is acidic. According to a second aspect of the invention, encapsulated dyes made by the processs of the first aspect of the invention are provided.</p> |
申请公布号 |
HK1126510(A1) |
申请公布日期 |
2011.05.27 |
申请号 |
HK20090105382 |
申请日期 |
2009.06.16 |
申请人 |
PROCTER & GAMBLE INTERNATIONAL OPERATIONS SA |
发明人 |
ALBERIUS, PETER, CARL, ANDERS;CORKERY, ROBERT, WILLIAM |
分类号 |
A61K;A61Q;C09B |
主分类号 |
A61K |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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