| 54 |
Title |
TI |
[DE] Beschichtete Titandioxid-Teilchen |
| 71/73 |
Applicant/owner |
PA |
Institut für Neue Materialien gemeinnützige GmbH, 66123 Saarbrücken, DE
|
| 72 |
Inventor |
IN |
Schichtel, Martin, 66125 Saarbrücken, DE
|
| 22/96 |
Application date |
AD |
Oct 31, 2001 |
| 21 |
Application number |
AN |
10153640 |
|
Country of application |
AC |
DE |
|
Publication date |
PUB |
May 15, 2003 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
|
| 51 |
IPC main class |
ICM |
C09C 1/36
|
| 51 |
IPC secondary class |
ICS |
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
B82Y 30/00
C01P 2004/64
C09C 1/3661
Y10S 977/773
Y10S 977/775
Y10S 977/776
Y10S 977/811
Y10T 428/2991
Y10T 428/2993
|
|
MCD main class |
MCM |
C01G 23/04
(2006.01)
|
|
MCD secondary class |
MCS |
C09C 1/36
(2006.01)
C09C 3/06
(2006.01)
C09C 3/08
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[DE] Ein Verfahren zur Herstellung von nanoskaligen Titandioxid-Teilchen, die mit einem Oxid, Hydroxid oder Oxidhydroxid von Al, Ce, Zr und/oder Si beschichtet sind, bei dem das enzymatische Fällungsmittelsystem Urease/Harnstoff verwendet wird. Diese beschichteten Titandioxid-Teilchen können eine mittlere Teilchengröße von unter 50 nm aufweisen, wobei die Beschichtung einen effektiven Schutz vor photokatalytischen Reaktionen bewirkt. Die beschichteten Teilchen eignen sich insbesondere als UV-Absorber in einer transparenten organischen Matrix.
[EN] The invention relates to a method for producing nanoscale titanium dioxide particles which are coated with an oxide, a hydroxide or an oxide hydroxide of Al, Ce, Zr and/or Si. According to said method, the enzymatic precipitant system urease/urea is used. Said coated titanium dioxide particles can have an average size of less than 50 nm, the coating providing effective protection against photocatalytic reactions. The coated particles are especially suitable as UV absorbers in a transparent organic matrix. |
| 56 |
Cited documents identified in the search |
CT |
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
C09C 1/36
|
