Patent US4654322A successfully refreshed from Google Patents.
US4654322A
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Insoluble compositions for removing mercury from a liquid medium
Assignee: DEVOE HOLBEIN INTERNATIONAL NV PO BOX 3889 CURACAO NETHERLAND ANTILLES
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Filing: 1985-08-05
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Granted: 1987-03-31
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Expires: 2005-08-05
Abstract
Abstract An insoluble composition for removing mercury from a liquid medium comprises a suitable insoluble carrier and a cysteine residue convalently fixed at the nitrogen atom thereof to the surface of the carrier.
Inventors
- 👤 Bruce E. Holbein
- 👤 David Brener
- 👤 Charles Greer
- 👤 Eric N. C. Browne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:04
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/32; B01J20/3202; B01J20/3204; B01J20/02; B01J20/10; B01J20/103; B01J20/28; B01J20/28054; B01J20/28078; B01J20/3214; B01J20/3217; B01J20/3231; B01J20/3242; B01J20/3244; B01J20/3246; B01J20/3257; B01J20/3259; B01J20/34; B01J20/3425; B01J20/345; B01J20/3475; C; C02; C02F; C02F1/00; C02F1/28; C02F1/288
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
24 words
An insoluble composition comprising: (i) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (ii) a suitable insoluble carrier.
Claim 2
Dependent Claim
24 words
An insoluble composition comprising: (i) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (ii) a suitable insoluble carrier.
Claim 3
Dependent Claim
14 words
An insoluble composition as defined in claim 1 wherein the carrier is silica gel.
Claim 4
Dependent Claim
50 words
A process for the preparation of an insoluble composition comprising: (i) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (ii) a suitable insoluble carrier characterized in that cysteine is reacted with a suitable reactive insoluble carrier to obtain an insoluble composition as defined above.
Claim 5
Dependent Claim
50 words
A process for the preparation of an insoluble composition comprising: (i) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (ii) a suitable insoluble carrier characterized in that cysteine is reacted with a suitable reactive insoluble carrier to obtain an insoluble composition as defined above.
Claim 6
Dependent Claim
33 words
A process as defined in claim 3 wherein the carrier is an aldehyde activated carrier, and the product of the reaction between (i) and (ii) is subjected to a Schiff base reduction treatment.
Claim 7
Dependent Claim
16 words
A process as defined in claim 4 wherein the carrier is an aldehyde activated silica gel.
Claim 8
Dependent Claim
76 words
An insoluble composition comprising (i) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (ii) a suitable insoluble carrier, characterized in that the nitrogen atom of said cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, said chain including an additional nitrogen atom covalently linked to the nitrogen atom of said cysteine residue by a hydrocarbon chain of five carbon atoms.
Claim 9
Dependent Claim
76 words
An insoluble composition comprising (i) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (ii) a suitable insoluble carrier, characterized in that the nitrogen atom of said cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, said chain including an additional nitrogen atom covalently linked to the nitrogen atom of said cysteine residue by a hydrocarbon chain of five carbon atoms.
Claim 10
Dependent Claim
42 words
An insoluble composition as defined in claim 6, wherein said hydrocarbon chain comprises five methylene groups and wherein said additional nitrogen atom and the nitrogen atom of said cysteine residue are each linked to said hydrocarbon chain by a single covalent bond.
Claim 11
Dependent Claim
17 words
An insoluble composition as defined in claim 1, wherein the carrier is a suitable insoluble inorganic carrier.
Claim 12
Dependent Claim
17 words
An insoluble composition as defined in claim 6, wherein the carrier is a suitable insoluble inorganic carrier.
Claim 13
Dependent Claim
17 words
An insoluble composition as defined in claim 7, wherein the carrier is a suitable insoluble inorganic carrier.
Claim 14
Dependent Claim
14 words
An insoluble composition as defined in claim 6, wherein the carrier is silica gel.
Claim 15
Dependent Claim
14 words
An insoluble composition as defined in claim 7, wherein the carrier is silica gel.
Claim 16
Dependent Claim
157 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein the nitrogen atom of the cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, the first three chain atoms immediately adjacent to the nitrogen atom being carbon atoms, said process being characterized in that cysteine is subjected to a Schiff base reaction with a suitable aldehyde activated insoluble carrier, each of the aldehyde functional groups ##STR17## of the carrier being fixed to the surface of the carrier by a chain of atoms, the first two atoms of said chain immediately adjacent a respective aldehyde functional group being carbon atoms and, if desired, the obtained product is subjected to a Schiff base reduction treatment with a suitable reducing agent to obtain an insoluble composition as defined above.
Claim 17
Dependent Claim
157 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein the nitrogen atom of the cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, the first three chain atoms immediately adjacent to the nitrogen atom being carbon atoms, said process being characterized in that cysteine is subjected to a Schiff base reaction with a suitable aldehyde activated insoluble carrier, each of the aldehyde functional groups ##STR17## of the carrier being fixed to the surface of the carrier by a chain of atoms, the first two atoms of said chain immediately adjacent a respective aldehyde functional group being carbon atoms and, if desired, the obtained product is subjected to a Schiff base reduction treatment with a suitable reducing agent to obtain an insoluble composition as defined above.
Claim 18
Dependent Claim
167 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalenty fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein the nitrogen atom of the cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, the first three chain atoms immediately adjacent to the nitrogen atom being carbon atoms, said process being characterized in that cysteine is subjected to a Schiff base reaction with a suitable aldehyde activated insoluble carrier, each of the aldehyde functional groups ##STR18## of the carrier being fixed to the surface of the carrier by a chain of atoms, the first two atoms of said chain immediately adjacent a respective aldehyde functional group being carbon atoms, and the obtained product is subjected to a Schiff base reduction treatment with a suitable reducing agent, in order to obtain an insoluble composition as defined above, said aldehyde activated carrier being an aldehyde activated silica gel.
Claim 19
Dependent Claim
167 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalenty fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein the nitrogen atom of the cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, the first three chain atoms immediately adjacent to the nitrogen atom being carbon atoms, said process being characterized in that cysteine is subjected to a Schiff base reaction with a suitable aldehyde activated insoluble carrier, each of the aldehyde functional groups ##STR18## of the carrier being fixed to the surface of the carrier by a chain of atoms, the first two atoms of said chain immediately adjacent a respective aldehyde functional group being carbon atoms, and the obtained product is subjected to a Schiff base reduction treatment with a suitable reducing agent, in order to obtain an insoluble composition as defined above, said aldehyde activated carrier being an aldehyde activated silica gel.
Claim 20
Dependent Claim
146 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein said nitrogen atom of the cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, said chain including an additional nitrogen atom covalently linked to the nitrogen atom of said cysteine residue by a hydrocarbon chain of five carbon atoms, said process being characterized in that cysteine is subjected to a Schiff base reaction with a suitable aldehyde activated insoluble carrier, each of the aldehyde functional groups ##STR19## of said carrier being fixed to the surface of the carrier by a chain of atoms, each said chain including a nitrogen atom covalently linked to a respective ##STR20## group by a hydrocarbon chain of 4 carbon atoms.
Claim 21
Dependent Claim
146 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein said nitrogen atom of the cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, said chain including an additional nitrogen atom covalently linked to the nitrogen atom of said cysteine residue by a hydrocarbon chain of five carbon atoms, said process being characterized in that cysteine is subjected to a Schiff base reaction with a suitable aldehyde activated insoluble carrier, each of the aldehyde functional groups ##STR19## of said carrier being fixed to the surface of the carrier by a chain of atoms, each said chain including a nitrogen atom covalently linked to a respective ##STR20## group by a hydrocarbon chain of 4 carbon atoms.
Claim 22
Dependent Claim
173 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein said nitrogen atom of the cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, said chain including an additional nitrogen atom covalently linked to the nitrogen atom of said cysteine residue by a hydrocarbon chain of five carbon atoms, said process being characterized in that cysteine is subjected to a Schiff base reaction with a suitable aldehyde activated insoluble carrier, each of the aldehyde functional groups ##STR21## of said carrier being fixed to the surface of the carrier by a chain of atoms, each said chain including a nitrogen atom covalently linked to a respective ##STR22## group by a hydrocarbon chain of 4 carbon atoms, and the obtained product is subjected to a Schiff base reduction treatment with a suitable reducing agent, in order to obtain an insoluble composition as defined above.
Claim 23
Dependent Claim
173 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein said nitrogen atom of the cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, said chain including an additional nitrogen atom covalently linked to the nitrogen atom of said cysteine residue by a hydrocarbon chain of five carbon atoms, said process being characterized in that cysteine is subjected to a Schiff base reaction with a suitable aldehyde activated insoluble carrier, each of the aldehyde functional groups ##STR21## of said carrier being fixed to the surface of the carrier by a chain of atoms, each said chain including a nitrogen atom covalently linked to a respective ##STR22## group by a hydrocarbon chain of 4 carbon atoms, and the obtained product is subjected to a Schiff base reduction treatment with a suitable reducing agent, in order to obtain an insoluble composition as defined above.
Claim 24
Dependent Claim
229 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein the nitrogen atom of said cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, said chain including an additional nitrogen atom covalently linked to the nitrogen atom of said cysteine residue by a hydrocarbon chain of five methylene groups and wherein said additional nitrogen atom and the nitrogen atom of said cysteine residue are each linked to said hydrocarbon chain by a single covalent bond, said process being characterized in that (a) a suitable amino activated insoluble carrier having amino groups covalently fixed to its surface is subjected to a Schiff base reaction with glutaraldehyde to obtain an aldehyde activated carrier, each of the aldehyde functional groups ##STR23## of said carrier being fixed to the surface of the carrier by a chain of atoms, each said chain including a nitrogen atom covalently linked to a respective ##STR24## group by a hydrocarbon chain of 4 carbon atoms, and (b) said aldehyde activated carrier is then subjected to a Schiff base reaction with cysteine; and (c) the obtained product is subjected to a Schiff base reduction treatment with a suitable reducing agent to obtain an insoluble composition as defined above.
Claim 25
Dependent Claim
229 words
A process for the preparation of an insoluble composition comprising: (1) a cysteine residue covalently fixed at the nitrogen atom thereof to the surface of (2) a suitable insoluble carrier, wherein the nitrogen atom of said cysteine residue is fixed to the surface of the carrier by a covalent linkage comprising a chain of atoms, said chain including an additional nitrogen atom covalently linked to the nitrogen atom of said cysteine residue by a hydrocarbon chain of five methylene groups and wherein said additional nitrogen atom and the nitrogen atom of said cysteine residue are each linked to said hydrocarbon chain by a single covalent bond, said process being characterized in that (a) a suitable amino activated insoluble carrier having amino groups covalently fixed to its surface is subjected to a Schiff base reaction with glutaraldehyde to obtain an aldehyde activated carrier, each of the aldehyde functional groups ##STR23## of said carrier being fixed to the surface of the carrier by a chain of atoms, each said chain including a nitrogen atom covalently linked to a respective ##STR24## group by a hydrocarbon chain of 4 carbon atoms, and (b) said aldehyde activated carrier is then subjected to a Schiff base reaction with cysteine; and (c) the obtained product is subjected to a Schiff base reduction treatment with a suitable reducing agent to obtain an insoluble composition as defined above.
Claim 26
Dependent Claim
13 words
A process as defined in claim 17, wherein said carrier is silica gel.
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