Abstract

Water treatment composition The present invention relates to a composition, to a process for obtaining said composition and to the use of said composition, in particular as coagulant in water treatment.

IPC Classes  ?

• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
• C02F 1/56 - Macromolecular compounds
• C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
• C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
• C02F 103/30 - Nature of the water, waste water, sewage or sludge to be treated from the textile industry
• C02F 103/36 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups from the manufacture of organic compounds

Abstract

The invention relates to a process for separating one or more elements among the rare-earth elements from other metals in columns 4 to 14 of the Periodic Table of the Elements, in admixture in aqueous solution. The process uses a polyethyleneimine-CS2 adduct in the form of a salt.

IPC Classes  ?

• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 59/00 - Obtaining rare earth metals

Abstract

The invention relates to a process for separating two elements E1 and E2, chosen from rare-earth metals, in admixture in aqueous solution AS. The process uses at least one dithiocarbamate salt.

IPC Classes  ?

• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 59/00 - Obtaining rare earth metals

Abstract

A process for separating one or more elements among the rare-earth elements from other metals in columns 4 to 14 of the Periodic Table of the Elements, in admixture in aqueous solution. The process uses a polyethyleneimine-CS2 adduct in the form of a salt and involves liquid/solid separation to obtain a solid predominantly containing the rare-earth elements.

IPC Classes  ?

• C22B 59/00 - Obtaining rare earth metals
• B01D 21/01 - Separation of suspended solid particles from liquids by sedimentation using flocculating agents
• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C22B 15/00 - Obtaining copper
• C22B 43/00 - Obtaining mercury

Abstract

A process for separating two elements E1 and E2, chosen from rare-earth metals, in admixture in aqueous solution AS. The process uses at least one dithiocarbamate salt having a formula R1R2NCS2−M+, in which M is an alkali metal cation, the groups R1 and/or R2 are chosen from a hydrogen atom, a methyl group, a linear, branched or cyclic, saturated or unsaturated, substituted or unsubstituted carbon chain including from 2 to 20 carbon atoms, which may include one or more heteroatoms chosen from nitrogen and oxygen, the groups R1 and R2 together May form a ring.

IPC Classes  ?

• C22B 59/00 - Obtaining rare earth metals
• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes

Abstract

The present invention relates to a novel method for the preparation by precipitation polymerization of a degradable polymer, said polymer and its use.

IPC Classes  ?

• C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• C08F 220/56 - AcrylamideMethacrylamide
• C09K 8/44 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing organic binders only
• C09K 8/508 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
• D21H 17/37 - Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
• C08F 2/00 - Processes of polymerisation
• C04B 24/16 - Sulfur-containing compounds
• C04B 103/00 - Function or property of the active ingredients
• C04B 103/32 - Superplasticisers
• C04B 103/40 - Surface-active agents Dispersants
• C04B 103/44 - Thickening, gelling or viscosity increasing agents
• C09K 8/035 - Organic additives
• C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
• C09K 8/68 - Compositions based on water or polar solvents containing organic compounds
• C09K 8/588 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
• D21H 21/14 - Non-fibrous material added to the pulp, characterised by its function, form or propertiesPaper impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
• C11D 3/37 - Polymers
• C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
• C02F 1/56 - Macromolecular compounds

Abstract

The present invention relates to a new method for preparing a polymer with improved degradability, and the use of this polymer.

IPC Classes  ?

• C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• C09K 8/44 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing organic binders only
• C09K 8/508 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
• D21H 17/37 - Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
• C08F 220/56 - AcrylamideMethacrylamide
• C08F 2/00 - Processes of polymerisation
• C09K 8/035 - Organic additives
• C08F 220/06 - Acrylic acidMethacrylic acidMetal salts or ammonium salts thereof
• D21H 21/14 - Non-fibrous material added to the pulp, characterised by its function, form or propertiesPaper impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
• C11D 3/14 - PigmentsFillersAbrasives
• C09K 8/467 - Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
• C09K 8/88 - Compositions based on water or polar solvents containing organic compounds macromolecular compounds
• C08G 69/00 - Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
• C02F 1/56 - Macromolecular compounds
• C04B 103/00 - Function or property of the active ingredients
• C04B 103/32 - Superplasticisers
• C04B 103/40 - Surface-active agents Dispersants
• C04B 103/44 - Thickening, gelling or viscosity increasing agents
• C11D 3/37 - Polymers