Title:
ウルトラマリン顔料の合成方法
Document Type and Number:
Japanese Patent JP4818258
Kind Code:
B2
Abstract:
The present invention relates to an ultramarine pigment synthesis process which includes a calcination step in the absence of air of a mixture including zeolite A, possibly sodium sulfide and/or sulfur, possibly hydroxide ions, and polysulfides of composition Na2Sn, n being a number greater than 1, the product resulting from the calcination reaction being cooled in the absence of air, leading to obtaining a raw product which includes the synthesized ultramarine pigment, polysulfides and possibly sulfur. The Na2Sn polysulfides taking part in the calcination reaction come at least in part from the recycling of the polysulfides and possibly of the sulfur present in excess in the aforesaid raw product.
Inventors:
Le Ruille, Jean-Pierre Vetting
Christian Elle Duillon
Auto Cool, Noel S
De Mortiere, Antoine M
Rede, beltrange
Coupman, Patrice
Reggie, patrick
Christian Elle Duillon
Auto Cool, Noel S
De Mortiere, Antoine M
Rede, beltrange
Coupman, Patrice
Reggie, patrick
Application Number:
JP2007512275A
Publication Date:
November 16, 2011
Filing Date:
May 09, 2005
Export Citation:
Assignee:
HOLLIDAY PIGMENTS SA
International Classes:
C01B39/14; C01B39/02; C09C1/00; C09C1/32; C09C3/06
Domestic Patent References:
| JPS54142238A | 1979-11-06 | |||
| JP2000502031A | 2000-02-22 |
Foreign References:
| US2535057A | 1950-12-26 |
Attorney, Agent or Firm:
Koichi Kamata
Shigeru Kuroda
Shigeru Kuroda