abcd3/2f3/220-5f3/2ef3/2f3/23/24/23/20-82-8fgef2-8e2-8ff2-8f22-8f20-81-222-222-221-221-22-alkylaryl group; e is 0 or 1; f is an integer from 1 to 10 and g is 0 to 10. The compounds are useful for removing metal species, particularly precious metal species from a medium, particularly water in process streams, chemical synthesis processes, manufacturing and assembly processes in which specifications have stringent limits on the maximum amount of metals.
C08G 77/48 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
A substantially insoluble compound having a polysaccharide backbone which is derivatised at one or more of its hydroxyl groups with a ligand (L) bound to the sugar moiety by a sulphur atom which may be tailored according to a wide range of applications. The compound is useful as a catalyst and in removal of contaminants from a feed containing particularly metal ions.
C08B 3/10 - Preparation of cellulose esters of organic acids of monobasic organic acids with three or more carbon atoms with five or more carbon atoms
B01J 20/24 - Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
A process for the selective removal of a component from a liquid phase and subsequently returning the component to a liquid phase is disclosed. A novel compound of formula I [SUP]-[[L]-[G]]a (I) in which L is a linking group, G is an aryl group having a leaving group LG selected from Cl, Br, I, sulfonate such as triflate, a diazo group, a nitrile, an ester and an alkoxy group and substituent Q is selected from H, NR2, OR, CO2R, F, Cl, NO2 CN and SUP is a support having a plurality of groups -[L]-[G] bound to the support is contacted with the liquid phase to bind the component to the compound I thereby forming a captured component which is separated from and may be returned to the liquid phase. The compound I is especially useful in binding homogeneous catalysts to remove it from a reaction medium and selectively returning the catalyst to the reaction medium at a later stage. The compound is particularly useful for cross-coupling reactions, for example in Suzuki reactions.
A substantially insoluble compound having a polysaccharide backbone which is derivatised at one or more of its hydroxyl groups with a ligand (L) bound to the sugar moiety by a sulphur atom which may be tailored according to a wide range of applications. The compound is useful as a catalyst and in removal of contaminants from a feed containing particularly metal ions.
A process for the selective removal of a component from a liquid phase and subsequently returning the component to a liquid phase is disclosed. A novel compound of formula (I) [SUP]-[[L]-[G]]a (I) in which L is a linking group, G is an aryl group having a leaving group LG selected from Cl, Br, I, sulfonate such as triflate, a diazo group, a nitrile, an ester and an alkoxy group and substituent Q is selected from H, NR2, OR, CO2R, F, Cl, NO2 CN and SUP is a support having a plurality of groups -[L]-[G] bound to the support is contacted with the liquid phase to bind the component to the compound I thereby forming a captured component which is separated from and may be returned to the liquid phase. The compound I is especially useful in binding homogeneous catalysts to remove it from a reaction medium and selectively returning the catalyst to the reaction medium at a later stage. The compound is particularly useful for cross-coupling reactions, for example in Suzuki reactions.
A novel compound of formula (I) [SUP]-[[L]-[G]]a (I) in which L is a linking group, G is an aryl group having a leaving group LG selected from Cl, Br, I, sulfonate such as triflate, a diazo group, a nitrile, an ester and an alkoxy group and substituent Q is selected from H, NR2, OR, CO2R, F, CI, NO2 CN and SUP is a support having a plurality of groups -[L]-[G] bound to the support is contacted with the liquid phase to bind a component to the compound I thereby recovering the component from the liquid phase.
A process for the selective removal of a component from a liquid phase and subsequently returning the component to a liquid phase is disclosed. A novel compound of formula (I) [SUP]-[[L]-[G]]a (I) in which L is a linking group, G is an aryl group having a leaving group LG selected from Cl, Br, I, sulfonate such as triflate, a diazo group, a nitrile, an ester and an alkoxy group and substituent Q is selected from H, NR2, OR, C02R, F, Cl, N02 CN and SUP is a support having a plurality of groups -[L]-[G] bound to the support is contacted with the liquid phase to bind the component to the compound I thereby forming a captured component which is separated from and may be returned to the liquid phase. The compound I is especially useful in binding homogeneous catalysts to remove it from a reaction medium and selectively returning the catalyst to the reaction medium at a later stage. The compound is particularly useful for cross-coupling reactions, for example in Suzuki reactions.
The invention relates both to processes for the production of functionalised materials containing alkyl sulfonic acids groups and their use as heterogeneous catalysts. The invention also relates to precursors of these new products and new organopolysiloxane sulfonic acids.
C08G 77/28 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen sulfur-containing groups
C08G 77/50 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms by carbon linkages
The invention relates to a treatment and use involving a metal scavenger, such as functionalised organic or inorganic material, and a process to selectively remove specific metal ions and complexes from a stream containing a range of metal species in varying concentrations.
C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
B01J 20/00 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof
c. The compounds are useful as scavengers for the removal of unwanted organic and inorganic compounds, for solid phase extraction, for solid phase synthesis, for acid and metal mediated heterogeneous catalysis, for metal ion abstraction and for the immobilization of bio-molecules.
C08G 77/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
C12N 11/08 - Enzymes or microbial cells immobilised on or in an organic carrier the carrier being a synthetic polymer
[(O3/2)Si CH2CH2SX] a [Si (O4/2)] b [WSi (O3/2)] c [VSi (O3/2)] d wherein X is selected from (CR1R2)eNR5 CO NHR, (CR1R2)eNR5 CS NHR, W when present is selected from (CR6R7)e ZR, (CH2)3 SR1 (CH2)3 NRR1, (CH2)e SR8, CH2CH2S (CR1R2)fNR5 CO NHR, CH2CH2S (CR1R2),NR5 CS NHR, CH2CH2S (CH2)f OR; Z is O or S, R, R1-7 are independently selected from hydrogen, alkyl group, aryl group or alkylaryl group, R8 is selected from [CH2CH2NR1]P R2 and (CR1R2)m SR9 where R9 is hydrogen, C1-22-alkyl group, and V is a group which is optionally substituted and selected from a C1-22-alkyl group, C2-22-alkenyl group, a C2-22-alkynyl group or an aryl group. The compounds are useful as immobilisation materials for bio-molecules including enzymes, cation and anion exchangers, organic and inorganic compound scavengers, solid phase purification or extraction materials, removal and purification of biological compounds including endotoxins, anti-microbial agents, hydrophilicity modifiers, flame proofing agents, antistatic agents, coatings for biomedical devices, water repellent films and coatings, solid phase synthesis materials and chromatography materials.
C07F 7/21 - Cyclic compounds having at least one ring containing silicon but no carbon in the ring
C08G 77/28 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen sulfur-containing groups
C08G 77/50 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms by carbon linkages
The invention relates to new compounds of Formula 1:
3/2SiV] both A and B are always present.
The compounds are useful as scavengers for the removal of unwanted organic and inorganic compounds, for solid phase extraction, for solid phase synthesis, for catalysis, for metal ion abstraction and for the immobilisation of bio-molecules. In addition, the compounds have high chemical and thermal stability, fixed and rigid structures, are insoluble in organic solvents, high resistance to ageing, and can easily be purified and reused.
C08G 77/28 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen sulfur-containing groups
C08G 77/50 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms by carbon linkages
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