IP Library › Granted Patent US 10,076,475
Granted Patent B2
US 10,076,475 · App. 15/142,761 · Granted Sep 18, 2018

Shell-structured particles for sunscreen applications

Inventors: Talia S. Gershon (White Plains, NY); Yun Seog Lee (Yorktown Heights, NY); Ning Li (White Plains, NY); Devendra Sadana (Pleasantville, NY); Teodor K. Todorov (Yorktown Heights, NY)
Assignee: International Business Machines Corporation
A61K8/19A61K8/025A61K8/27A61Q17/04A61K2800/621A61K2800/63A61K2800/651
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Quick Facts
Patent No.
US 10,076,475
App. No.
15/142,761
Granted
Sep 18, 2018
Kind
B2
Abstract

Shell-structured particles for sunscreen applications are provided herein. A method includes selecting one or more particles to serve as a core material in a sunscreen composition, wherein each of the one or more particles comprises a band gap within a predetermined range, and wherein said selecting is based on a desired absorption spectrum of the sunscreen composition; coating the one or more particles with at least one layer of zinc oxide. A composition includes selecting one or more particles to serve as a coating layer in a sunscreen composition, wherein each of the one or more particles comprises a band gap within a predetermined range, and wherein said selecting is based on a desired absorption spectrum of the sunscreen composition; and coating one or more zinc oxide particles with the one or more selected particles.

Claims (11)

1. A sunscreen composition comprising:

one or more particles in a sunscreen composition, wherein each of the one or more particles comprises zinc oxy-sulfide and has a band gap between two electron volts and three electron volts, and wherein at least one layer of zinc oxide particles coats the one or more particles.

2. The composition of claim 1 , further comprising:

an anti-reflective coating applied to the surface of that at least one layer of the zinc oxide particles.

3. The composition of claim 2 , wherein the anti-reflective coating comprises silicon dioxide.

4. The composition of claim 2 , wherein the anti-reflective coating comprises magnesium fluoride.

5. The composition of claim 2 , wherein the anti-reflective coating comprises one or more fluoropolymers.

6. The composition of claim 2 , wherein the anti-reflective coating comprises a single layer.

7. The composition of claim 2 , wherein the anti-reflective coating comprises multiple layers.

8. The composition of claim 2 , wherein the anti-reflective coating comprises one or more smooth layers.

9. The composition of claim 2 , wherein the anti-reflective coating comprises one or more roughened layers.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 18, 2016
From: GERSHON, TALIA S.; LEE, YUN SEOG; LI, NING; SADANA, DEVENDRA; TODOROV, TEODOR K.
To: INTERNATIONAL BUSINESS MACHINES CORPORATION
Reel/Frame 038635/0727 →
Continuity (2)
Provisional Application 62245277 · Oct 23, 2015
Related Publication 20170112728A1 · Apr 27, 2017
Cited By (3)
US 12,214,225 US 12,233,289 US 12,251,456