US 7,601,328 B2
	Colloidal hydroxide aqueous suspension of at least one transition element serving to reduce chrome in cement
Jean-Philippe Perez, Orleans (France); Olivier Malbault, Boutigny sur Essonne (France); and Martin Mosquet, Bourgoin-Jallieu (France)
Assigned to Chryso, Issy les Moulineaux (France)
Appl. No. 10/595,086 PCT Filed Aug. 06, 2004, PCT No. PCT/FR2004/002098 § 371(c)(1), (2), (4) Date Mar. 30, 2006, PCT Pub. No. WO2005/016843, PCT Pub. Date Feb. 24, 2005.
Claims priority of application No. 03 09755 (FR), filed on Aug. 08, 2003.
Prior Publication US 2006/0213400 A1, Sep. 28, 2006
Int. Cl. C01G 17/02 (2006.01)

U.S. Cl. 423—618  [106/733]

17 Claims

1. An aqueous suspension of tin hydroxide with a pH between 2 and 11, limits excluded, to reduce chromium VI content of cement to a value at most equal to 2 ppm, includes from 0.5 to 80% by weight of dry matter of tin hydroxide with respect to the quantity of water and is stabilised by a hydrosoluble stabilisation agent.