Aluminum hydroxide and production process thereof

Details Aluminum hydroxide and production process thereof Aluminum hydroxide and production process thereof

2006-09-05

2006-09-05

Silverman, Stanley S. (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S111000, C524S437000

Reexamination Certificate

active

07101529

ABSTRACT:
A method for producing aluminum hydroxide, comprises the steps of: elevating a temperature of a slurry having agglomerated secondary particles of aluminum hydroxide obtained through the Bayer's process suspended in a sodium aluminate solution from not more than 70° C. to not less than 85° C. within 15 minutes, thereby disintegrating the agglomerated secondary particles; and retaining, for a period of at least 15 minutes from temperature elevation, the temperature of the slurry so as not to be lowered to not less than 80° C.

REFERENCES:
patent: 4340579 (1982-07-01), Greber et al.
patent: 5492542 (1996-02-01), Brown et al.
patent: 2003/0185747 (2003-10-01), Onishi et al.
patent: 0 407 595 (1991-01-01), None
patent: 62-9256 (1987-02-01), None
patent: 05-4336 (1993-01-01), None
patent: 09-208740 (1997-08-01), None
patent: WO 01 00529 (2001-01-01), None
Gerson A R et al., “Influence of Solution Constituents, Solution Conditioning and Seeding on the Crystalline Phase of Aluminum Hydroxide Using in Situ X-ray Diffraction”, Mar. 1, 1996, Journal of Crystal Growth, North Holland Publishing Co., Amsterdam, NL, vol. 160, NR. 3, 4 pp. 346-354, XP002151672.
Database WPI, Section Ch, Week 199109, Derwent Publications Ltd., London, GB; AN 1991-060921, XP002216509.
Database WPI, Section Ch, Week 199737, Derwent Publications Ltd., London, GB; An 1997-399664, XP002151673.
International Search Report for PCT/JP02/06201 dated Oct. 24, 2002.

Affiliated with

Also associated with

Rating

Aluminum hydroxide and production process thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aluminum hydroxide and production process thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aluminum hydroxide and production process thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3620548