Title:
GOLD-NANODIAMOND COMPOSITE AND COSMETIC COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2019/132571
Kind Code:
A1
Abstract:
The present invention relates to: a gold-nanodiamond composite maintaining color stability for a long time even in a heated or acidic and neutral condition by allowing gold to be coupled to the surface of a nanodiamond; and a cosmetic comprising the same. The present invention can maintain the dispersion characteristics of nanodiamonds and the intrinsic characteristics (intrinsic color and antioxidant ability) of gold nanoparticles by forming gold in an island form on the surface of a nanodiamond, which is a three-dimensional scaffold. In addition, the composite of the present invention uses a nanodiamond as a three-dimensional scaffold so as to be nontoxic, and prevents, by diamond dispersion characteristics, aggregation between gold nanoparticles so as to facilitate redispersion and can maintain the intrinsic color of gold nanoparticles without discoloration regardless of a heating or pH change condition to be applied during the preparation of cosmetics. Additionally, the present invention can uniformly form gold nanoparticles (4-20 nm) on the surface of a nanodiamond in a short amount of time, and thus a process is simple, and a composite in which gold nanoparticles having a uniform size is formed on the surface of a nanodiamond can be obtained in a high yield.
Inventors:
KWON MYOUNGTAEK (KR)
LIM SUNHEE (KR)
YANG JIHYEK (KR)
LIM SUNHEE (KR)
YANG JIHYEK (KR)
Application Number:
PCT/KR2018/016834
Publication Date:
July 04, 2019
Filing Date:
December 28, 2018
Export Citation:
Assignee:
NANODIALAB CO LTD (KR)
NANORESOURCE CO LTD (KR)
NANORESOURCE CO LTD (KR)
International Classes:
A61K8/19; A61K8/02; A61Q19/00
Foreign References:
| JP2009220017A | 2009-10-01 | |||
| KR20050109659A | 2005-11-22 | |||
| KR20060108438A | 2006-10-18 | |||
| KR20070057333A | 2007-06-07 |
Other References:
MARTIN, R. ET AL.: "Nano-jewels in Biology. Gold and Platinum on Nano Particles as Antioxidant Systems against Cellular Oxidative Stress", ACS NANO, vol. 4, no. 11, 2010, pages 6957 - 6965, XP055623368
Attorney, Agent or Firm:
LEE, Junhyek (KR)
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