USING COPOLYMERS FOR REDUCING OF SEDIMENT AND SCALE FORMATION, CAUSED BY INORGANIC AND ORGANIC ADMIXTURES, IN PROCESS OF OBTAINING ALUMINIUM HYDROXIDE BY BAEYER Russian patent published in 2009 - IPC C08F220/00 C01F7/06

Abstract RU 2365595 C2

FIELD: chemistry.

SUBSTANCE: invention relates to application of water-soluble copolymers, which have average molecular weight from 750 to 500000 g/mole, said copolymers being formed by possessing acid groups, or neutralised acid groups, unsaturated monoethylene monomers a) and acyclic, monocylclic and/or bicyclic terpen b), especially, hydrocarbon of terpen line, in solutions of caustic soda, applied in Baeyer process, as reagents for reduction of sedimentation and formation of covering by inorganic and organic admixtures.

EFFECT: reduction of sedimentation of scale-forming substances.

10 cl, 7 ex, 3 tbl

Similar patents RU2365595C2

Title	Year	Author	Number
USING SILICON-CONTAINING POLYMERS TO IMPROVE FLOCCULATION OF RED MUD IN BAYER PROCESS	2008	Daj Ki Shpittser Donal'D Pol Khejtner Khauard I. Chen Kh-L Toni	RU2429207C2
NEW APPROACH TO CONTROL OVER DSP SEDIMENTATION IN BAYER PROCESS	2010	La,Timoti Tsuj,Tszi Kildi,Dzhon D. Slinkman,Dehvid Kh. Koulman,Kim Richard	RU2537417C2
TREATMENT PROCESS WITH INVOLVEMENT OF HYDROXAMIC POLYMERS IN BAYER PROCESS (OPTIONS)	1997	Rotenberg Alan S. Avotins Piter V. Koul Robert K'Jula Frehnk	RU2189943C2
HIGH-MOLECULAR WEIGHT POLYMERS CONTAINING SALICYLIC ACID PENDING GROUPS	2001	Kvadir Murat Fillips Ehverett K. Brehmmer Larri Eh. Ml. Mehkhoni Robert P. Kildia Dzhon L. Ramesh Manian Malito Dzhon T.	RU2298016C2
REDUCING ALUMINOSILICATE SCALE IN BAYER PROCESS	2012	La Timothy Kildea John D. O'Brien Kevin L. Phillips Everett C. Sawant Kailas B. Slinkman David H. Swiecinski Frederick J. Cui Ji	RU2606323C2
SILANE-SUBSTITUTED POLYETHYLENE OXIDE REAGENTS AND METHOD FOR USE THEREOF TO PREVENT OR REDUCE ALUMINOSILICATE SCALING IN INDUSTRIAL METHODS	2008	Khejtner Khauard	RU2463258C2
COMPOSITION AND METHOD OF IMPROVING FORMATION OF CRYSTAL AGGLOMERATES FROM MOTHER SOLUTION	2010	Kuznetsov Dmitrij L. Lju Tszjan'Tszjun' Koulman Kim Richard Chester Rajan Trehvis Kildi Dzhon D.	RU2556217C2
IMPROVED METHOD OF PRODUCING ALUMINIUM HYDROXIDE	2007	Kuznetsov Dmitrij L. Liu Dzhandzhun Slinkman Dehvid G.	RU2448904C2
POLYMERS PRODUCING HYDROGEL AND ABSORBING AQUEOUS LIQUIDS, PRODUCTION METHOD AND APPLICATION OF MONOETHYLENOID-NONSATURATED C-C-CARBOXYLIC ACIDS CONTAINING α-TOCOPHEROL AS STABILISING ADDITIVE	2002	Nestler Gerkhard Shreder Jurgen Vikel' Shtefan	RU2329066C9
METHOD OF PREVENTION OR REDUCTION OF THE ALUMINOSILICATE SEDIMENTATION IN BUYER'S METHOD	2003	Spitser Donal'D P. Rotenberg Alan S. Khejtner Govard I. Kula Frank	RU2311494C2

RU 2 365 595 C2

Authors

Flokken Kristian

Kubot Detlef

Peshmann Rajner

Dates

2009-08-27—Published

2005-02-28—Filed