Method for preparation of well-dispersed, discrete nanoparticles by spray drying techniques
US8562874B2 · kind B2 · utility
1Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2012 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Jun 10, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y40/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A method for preparing uniquely sized nanoparticles of CaF2 by simultaneously spray drying a first NH4F and a biocompatible salt solution and a second Ca(OH)2 and biocompatible salt solution to form CaF2 solid particles in a soluble salt matrix wherein the salt is more soluble than CaF2. The salt matrix may then be dissolved and the separate CaF2 nanosized particles collected for use as a dental therapeutic material. The technique is useful in the preparation of other discrete, nanoparticle sized compounds and combinations by carefully choosing the solvents and solutes of the two spray dried solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.