Patent US4604451A successfully refreshed from Google Patents.
US4604451A
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Novel functionalized resin derived from polyallylamine
Assignee: Nitto Boseki Co Ltd
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Filing: 1984-11-13
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Granted: 1986-08-05
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Expires: 2004-11-13
Abstract
Abstract A new functionalized resin represented by the general formula was derived from polyallylamine. <IMAGE> [I] [wherein; X represents the general formula -NHCO(CH2)l}t [II] (t is 0 or 1, l is an integer of 1 to 20), n>/=10, 0<j<1, u=1 or 2, and m=1 or 2, with the proviso that t and m are not simultaneously 0]. The functionalized resin is preferably used for recovering heavy metals in waste water and for optionally dissolving amino acids.
Inventors
- 👤 Susumu Harada
- 👤 Kiyoshi Shimizu
- 👤 Masayuki Ujiie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:33
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
51 words
A functionalized resin represented by the general formula: ##STR24## wherein, X represents the general formula --NHCO(CH.sub.2).sub.l }.sub.t [II] t is 0 or 1, l is an integer of 1 to 20, n≧10, 0<j<1, u=1 or 2, and m=0 or 1, with the proviso that t and m are not simultaneously 0.
Claim 2
Dependent Claim
51 words
A functionalized resin represented by the general formula: ##STR24## wherein, X represents the general formula --NHCO(CH.sub.2).sub.l }.sub.t [II] t is 0 or 1, l is an integer of 1 to 20, n≧10, 0<j<1, u=1 or 2, and m=0 or 1, with the proviso that t and m are not simultaneously 0.
Claim 3
Dependent Claim
21 words
The functionalized resin of claim 1, which is a polymer of formulas [I] wherein m is 1 and t is 0.
Claim 4
Dependent Claim
21 words
A funtionalized resin of claim 1, which is a polymer of formula [I] wherein m is 0 and t is 1.
Claim 5
Dependent Claim
21 words
The functionalized resin of claim 1, which is a polymer of formula [I] wherein m is 1 and t is 1.
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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) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |