COLLOID CRYSTAL AND PROCESS FOR PRODUCING THE SAME

Title:

COLLOID CRYSTAL AND PROCESS FOR PRODUCING THE SAME

Document Type and Number:

Japanese Patent JP2005279633

Kind Code:

A

Abstract:

To provide a colloid crystal, which comprises colloid particles different from conventional polystyrene particles, silica particles, and the like, in refractive index and can meet a wide variety of application requirements, and a process for producing the same.

Template particles having particle diameters of 0.01 μm to 10 μm are dispersed in a first dispersant to stack a shell formed of a substance different from template particles around the template particles to prepare core/shell-type colloid particles. Next, the colloid particles are dispersed in a second dispersant which has been adjusted to a pH value in the range of 4 to 10 so that the absolute value of the surface charge is brought to not less than 15 mV in terms of a zeta potential, thereby regularly arranging the colloid particles. Before the regular arrangement, the template particles may be removed from the colloid particles to prepare hollow colloid particles.

Inventors:

NAKAMURA HIROSHI
NAKANO HIDEYUKI
ISHII MASAHIKO
TSUKIGASE AZUSA

Application Number:

JP2004360533A

Publication Date:

October 13, 2005

Filing Date:

December 13, 2004

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TOYOTA CENTRAL RES & DEV

International Classes:

C01G23/04; B01J13/00; B01J19/00; C01B33/18; (IPC1-7): B01J19/00; B01J13/00; C01B33/18; C01G23/04

Domestic Patent References:

JP2004511828A	2004-04-15
JP2004226891A	2004-08-12

Foreign References:

WO2003100139A1

2003-12-04

Attorney, Agent or Firm:

Fumio Hatakeyama
Kaoru Kobayashi

Previous Patent: GAS HEATING AND HIGH-TEMPERATURE CLEANING DEVICE PROVIDED WITH HEAT STORAGE SYSTEM MOVABLE GRANULE B...

Next Patent: AGITATOR FOR DECOMPOSITION TANK