Title:
無機蛍光増白剤
Document Type and Number:
Japanese Patent JP2009534490
Kind Code:
A
Abstract:
The invention relates to novel inorganic brighteners, a process for their preparation and their use for brightening substrates. More specifically, the novel inorganic brighteners are phosphors characterized in that they have (i) an absorption maximum in the range of from 350 to 375 nm; (ii) a steep decrease of the absorption band near 400 nm; (iii) a quantum yield of the phosphorescence of at least 0.8; and (iv) a phosphorescence maximum in the range between 415 and 445 nm.
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Inventors:
Fabian, Christian
Bernard, Sader
Reichert, Hans
Bernard, Sader
Reichert, Hans
Application Number:
JP2009505844A
Publication Date:
September 24, 2009
Filing Date:
April 10, 2007
Export Citation:
Assignee:
CIBA HOLDING INC.
International Classes:
C09K11/64; C09D5/00; C09D7/12; C09D201/00; C09K11/08; C09K11/72; C11D3/40
Domestic Patent References:
| JPH1161115A | 1999-03-05 | |||
| JPH0949195A | 1997-02-18 | |||
| JP2006143894A | 2006-06-08 | |||
| JP2006051686A | 2006-02-23 | |||
| JP2003519282A | 2003-06-17 |
Attorney, Agent or Firm:
Hajime Tsukuni
Koshiro Tsukuda
Fusayuki Saito
Koshiro Tsukuda
Fusayuki Saito