US4240909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borane reducing resins for removal of metal ions
Assignee: Rohm and Haas Co
•
Filing: 1978-03-13
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Granted: 1980-12-23
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Expires: 1998-03-13
Abstract
Abstract This invention relates to solid nonionic crosslinked resins containing amine or phosphine borane adducts and their use as reducing agents for metal ions.
Inventors
- 👤 Larry Manziek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:45
CPC Classifications
C; C02; C02F; C02F9/00; B; B01; B01D; B01D15/00; B01J; B01J47/00; B01J47/015; C02F1/00; C02F1/28; C02F1/285; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C08; C08F; C08F8/00; C08F8/42; C22; C22B; C22B3/00; C22B3/20; C22B3/42; C02F2101/00; C02F2101/10; C02F2101/20; C07C2601/00; C07C2601/12; C07C2601/14; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
71 words
A process for the removal of mercury, methyl mercury, antimony, arsenic, bismuth, silver, gold, palladium, platinum, rhodium, and iridium ions from aqueous and non-aqueous media which comprises contacting said media with a nonionic borane reducing resin which comprises a solid, cross-linked copolymer containing a plurality of amine- or phosphine-borane adduct functional groups, reducing the ions in solution by electron transfer and precipitating the reduced metals on and/or into the copolymer resin.
Claim 2
Dependent Claim
71 words
A process for the removal of mercury, methyl mercury, antimony, arsenic, bismuth, silver, gold, palladium, platinum, rhodium, and iridium ions from aqueous and non-aqueous media which comprises contacting said media with a nonionic borane reducing resin which comprises a solid, cross-linked copolymer containing a plurality of amine- or phosphine-borane adduct functional groups, reducing the ions in solution by electron transfer and precipitating the reduced metals on and/or into the copolymer resin.
Claim 3
Dependent Claim
63 words
A process according to claim 1 wherein the amine- or phosphine-borane adduct functional group is of the formula ##STR8## wherein R 1 and R 2 are independently (a) hydrogen; (b) (C 1 -C 8 ) optionally substituted alkyl; (c) (C 6 -C 12 ) optionally substituted aryl; and (d) (C 7 -C 12 ) optionally substituted aralkyl; and Z is nitrogen or phosphorous.
Claim 4
Dependent Claim
10 words
A process according to claim 2 wherein Z is nitrogen.
Claim 5
Dependent Claim
97 words
A process according to claim 1 wherein the solid, cross-linked copolymer containing a plurality of amine- or phosphine-borane adduct functional groups is of the formula ##STR9## wherein Q is a group of the formula --(CH.sub.2).sub.m --T--(CH.sub.2).sub.n -- wherein m and n are independently integers from 0 to 3; and T is the group ##STR10## R 1 and R 2 are independently (a) hydrogen; (b) (C 1 -C 8 ) optionally substituted alkyl; (c) (C 6 -C 12 ) optionally substituted aryl; and (d) (C 7 -C 12 ) optionally substituted aralkyl; and Z is nitrogen or phosphorous.
Claim 6
Dependent Claim
10 words
A process according to claim 4 wherein Z is nitrogen.
Claim 7
Dependent Claim
37 words
A process according to claim 5 wherein R 1 and R 2 are independently hydrogen, (C 1 -C 8 ) unsubstituted alkyl, (C 6 -C 12 ) unsubstituted aryl or (C 7 -C 12 ) unsubstituted aralkyl.
Claim 8
Dependent Claim
12 words
A process according to claim 6 wherein T is the group ##STR11##
Claim 9
Dependent Claim
29 words
A process according to claim 7 wherein R 1 and R 2 are independently hydrogen, (C 1 -C 4 ) unsubstituted alkyl or unsubstituted phenyl, biphenyl, benzyl or phenethyl.
Claim 10
Dependent Claim
14 words
A process according to claim 8 wherein the resin is in a macroreticular form.
Claim 11
Dependent Claim
28 words
A process according to claim 9 wherein the metal ions are selected from the group consisting of mercury, methyl mercury, silver, gold, platinum, antimony, arsenic and bismuth ions.
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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) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |