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US 7,588,747 B2Granted
Singlet oxygen quencher and composition using the same
AssigneesKose Corporation, APT, Inc.
InventorsNoboru Naito, Kumi Kameyama, Akemi Takayama, Misako Kobayashi, Yusei Miyamoto, Masashi Kajita
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Abstract
A novel singlet oxygen quencher is disclosed. The quencher consists of a colloidal liquid of a platinum metal group. A composition comprising, as an active ingredient, the singlet oxygen quencher is also disclosed.
Claims6
A singlet oxygen quencher consisting of a colloidal liquid of at least one platinum metal group member and a water soluble polymer, wherein
- the at least one platinum metal group member is chosen from platinum and rhodium;
- the platinum metal group member has a particle size equal to or smaller than 50 nm;
- and
- the water soluble polymer is chosen from polyvinyl pyrrolidone, polyvinyl alcohol, polyacrylic acid, cyclodextrin, aminopectin, methyl cellulose, and combinations thereof.
1 more element
Dependencies are inferred from the claim text.