US4552905A
Expired / Lapsed
US
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Copolymer, a process for its preparation and its use as a sorbent
Assignee: Sanofi Aventis Deutschland GmbH
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Filing: 1984-06-22
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Granted: 1985-11-12
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Expires: 2004-06-22
Abstract
Abstract The crosslinked copolymer containing 75 to 99.9% by weight of recurring units of a pyridyl, quinolyl, isoquinolyl or pyrazinyl compound containing a polymerizable olefinic group, 0.1 to 25% by weight of units of a crosslinking agent and 0 to 25% by a weight of units of a polymerizable organosilicon and/or organoboron compound and, based on 100% by weight of the sum of the abovementioned units, 5 to 350% by weight of units of an N-vinyl-amide, is prepared by bead polymerization and used as a sorbent for acid substances from their aqueous solutions.
Inventors
- 👤 Karl-Heinz Keil
- 👤 Ulrich Greiner
- 👤 Fritz Engelhardt
- 👤 Klaus Kuhlein
- 👤 Reinhold Keller
- 👤 Merten Schlingmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:17
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/22; B01J20/26; B01J20/261; B01J20/265; B01J20/267; C; C01; C01G; C01G13/00; C01G13/003; C01G3/00; C01G3/003; C01G9/00; C01G9/003; C08; C08F; C08F226/00; C08F226/06; C22; C22B; C22B3/00; C22B3/20; C22B3/22; C22B3/24; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
179 words
Crosslinked bead-like porous copolymer containing 75 to 99.9% by weight of recurring units of a pyridyl, quinolyl, isoquinolyl or pyrazinyl compound containing a polymerisable olefinic group or of several such compounds, 0.1 to 25% by weight of units of an n-valent polyunsaturated crosslinking agent or of several n-valent polyunsaturated crosslinking agents and 0 to 25% by weight of units of a polymerisable organisilicon and/or organoboron compound or of several such compounds and, based on 100% by weight of the sum of the above-mentioned units, 5 to 350% by weight of units of an N-vinyl-amide of the general formula I CH 2 ═CH--N(R 1 )--C(R 2 )═0, wherein R 1 denotes hydrogen, methyl or ethyl and R 2 denotes hydrogen or (C 1 -C 3 )-alkyl, or of several such N-vinyl-amides, and 0 to 40% by weight or units of another polymerisable compound or of several such com-pounds, n being a number equal to or greater than 2 and it being possible for the pyridyl, quinolyl, isoquinolyl or pyrazinyl compound also additionally to have one other or several other substituents.
Claim 2
Dependent Claim
179 words
Crosslinked bead-like porous copolymer containing 75 to 99.9% by weight of recurring units of a pyridyl, quinolyl, isoquinolyl or pyrazinyl compound containing a polymerisable olefinic group or of several such compounds, 0.1 to 25% by weight of units of an n-valent polyunsaturated crosslinking agent or of several n-valent polyunsaturated crosslinking agents and 0 to 25% by weight of units of a polymerisable organisilicon and/or organoboron compound or of several such compounds and, based on 100% by weight of the sum of the above-mentioned units, 5 to 350% by weight of units of an N-vinyl-amide of the general formula I CH 2 ═CH--N(R 1 )--C(R 2 )═0, wherein R 1 denotes hydrogen, methyl or ethyl and R 2 denotes hydrogen or (C 1 -C 3 )-alkyl, or of several such N-vinyl-amides, and 0 to 40% by weight or units of another polymerisable compound or of several such com-pounds, n being a number equal to or greater than 2 and it being possible for the pyridyl, quinolyl, isoquinolyl or pyrazinyl compound also additionally to have one other or several other substituents.
Claim 3
Dependent Claim
120 words
Copolymer according to claim 1, containing 80 to 99% by weight of recurring units of a pyridyl, quinolyl, isoquinolyl or pyrazinyl compound containing a polymerisable olefinic group or of several such compounds, 1 to 20% by weight of units of an n-valent crosslinking agent or of several n-valent crosslinking agents, and 0 to 19% by weight of units of a polymerisable organosilicon and/or organoboron compound or of several such compounds, and, based on 100% by weight of the sum of the abovementioned units, 10 to 250% by weight of units of an N-vinyl-amide of the general formula I or of several such N-vinyl-amides, and 0 to 255 by weight of units of another polymerisable compound or of several such compounds.
Claim 4
Dependent Claim
26 words
Copolymer according to claim 1 or 2, characterised in that it contains 0.1 to 10% by weight of units of a polymerisable organoboron and/or organosilicon compound.
Claim 5
Dependent Claim
18 words
Copolymer according to claim 1 or 2, characterised in that it contains no units of other polymerisable compounds.
Claim 6
Dependent Claim
16 words
Copolymer according to claim 1 or 2, characterised in that it contains recurring units of vinylpyridine.
Claim 7
Dependent Claim
59 words
Copolymer according to claim 1 or 2, characterised in that up to 50% by weight of the units of the pyridyl, quinolyl, isoquinolyl or pyrazinyl compound can be replaced by units of a heterocyclic 5-membered ring compound which contains a polymerisable olefinic group and has at least one protonatable nitrogen atom in the ring, or of several such compounds.
Claim 8
Dependent Claim
117 words
Process for the preparation of the crosslinked copolymers described in claim 1 or 2 characterised in that 75 to 99.9% by weight of one or more pyridyl, quinolyl, isoquinolyl or pyrazinyl compounds containing a polymerisable olefinic group, 0.1 to 25% by weight of one or more n-valent polyunsaturated crosslinking agents and 0 to 255 by weight of one or more polymerisable organosilicon and/or organoboron compounds, and, based on 100% by weight of the sum of the abovementioned compounds, 5 to 350% by weight of one or more N-vinyl-amides of the formula I and 0 to 40% by weight of one or more other polymerisable compounds, n being a number equal to or greater than 2, are copolymerised.
Claim 9
Dependent Claim
104 words
Process according to claim 7, characterised in that 80 to 99% by weight of a pyridyl, quinolyl, isoquinolyl or pyrazinyl compound containing a polymerisable olefinic group, or of several such compounds, 1 to 20% by weight of a crosslinking agent or of several such crosslinking agents, 0 to 19% by weight of one or more polymerisable organoboron and/or organosilicon compounds and, based on 100% of the sum of the abovementioned compounds, 10 to 250% by weight of one or more N-vinyl-amides of the general formula I and 0 to 25% by weight of units of another polymerisable compound or several such compounds, are copolymerised.
Claim 10
Dependent Claim
24 words
Process according to claim 7 or 8, characterised in that no compounds from the group of other polymerisable compounds are used in the copolymerisation.
Claim 11
Dependent Claim
24 words
Process according to claim 7 or 8, characterised in the 0.1 to 10% by weight of a polymerisable organoboron and/or organosilicon compound is used.
Claim 12
Dependent Claim
51 words
Process according to claim 7 or 8, characterised in that up to 50% by weight of the pyridyl, quinolyl, isoquinolyl or pyrazinyl compound is replaced by a heterocyclic 5-membered ring compound with a polymerisable olefinic group and at least one protonatable nitrogen atom in the ring, or by several such compounds.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |