US4415664A
Expired / Lapsed
US
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Epiamine-based support matrix
Assignee: Honeywell UOP LLC
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Filing: 1982-08-25
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Granted: 1983-11-15
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Expires: 2002-08-25
Abstract
Abstract A support matrix is described where a porous inorganic support is impregnated with an amine-bearing polymer whose backbone is polar and hydrophilic. The amino groups are cross-linked and themselves bear pendant aldehyde groups kept well away from the surface of the polymer-coated support.
Inventors
- 👤 Chester F. Barszcz
- 👤 Ted Symon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:09
CPC Classifications
C; C12; C12N; C12N11/00; C12N11/14; C12N11/02; C12N11/08; C12N11/089; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
81 words
A support matrix comprising a porous inorganic support selected from the group consisting of alumina, silica, thoria, magnesia, porous glass, ceramics, and combinations thereof, impregnated with an epiamine cross-linked with an excess of a dialdehyde selected from the group of dialdehydes with the formula OHC(CH 2 ) p CHO, where p is an integer from 2 to about 10, and "phthalaldehyde, wherein the epiamine is the reaction product of poly(epichlorohydrin) with an alkylenediamine containing from 2 to about 10 carbon atoms."
Claim 2
Dependent Claim
81 words
A support matrix comprising a porous inorganic support selected from the group consisting of alumina, silica, thoria, magnesia, porous glass, ceramics, and combinations thereof, impregnated with an epiamine cross-linked with an excess of a dialdehyde selected from the group of dialdehydes with the formula OHC(CH 2 ) p CHO, where p is an integer from 2 to about 10, and "phthalaldehyde, wherein the epiamine is the reaction product of poly(epichlorohydrin) with an alkylenediamine containing from 2 to about 10 carbon atoms."
Claim 3
Dependent Claim
11 words
The support matrix of claim 1 where the support is alumina.
Claim 4
Dependent Claim
14 words
The support matrix of claim 1 wherein the alkylenediamine is ethylenediamine, 1,2-diaminopropane, or 1,3-diaminopropane.
Claim 5
Dependent Claim
29 words
The support matrix of claim 1 where the epiamine is the reaction product of poly(epichlorohydrin) with a polyamine selected from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine.
Claim 6
Dependent Claim
11 words
The support matrix of claim 1 where the dialdehyde is glutaraldehyde.
Claim 7
Independent Claim
101 words
A method of making a support matrix comprising impregnating a porous inorganic support selected from the group consisting of alumina, silica, thoria, magnesia, porous glass, ceramics and combinations thereof with an epiamine, "wherein the epiamine is the reaction product of poly(epichlorohydrin) with an alkylenediamine containing from 2 to about 10 carbon atoms," removing excess epiamine, contacting the impregnated support with an excess of a dialdehyde selected from the group consisting of dialdehydes with a formula OHC(CH 2 ) p CHO, where p is an integer from 2 to about 10, and phthalaldehydes, removing unreacted dialdehyde, and recovering the resulting support matrix.
Claim 8
Independent Claim
101 words
A method of making a support matrix comprising impregnating a porous inorganic support selected from the group consisting of alumina, silica, thoria, magnesia, porous glass, ceramics and combinations thereof with an epiamine, "wherein the epiamine is the reaction product of poly(epichlorohydrin) with an alkylenediamine containing from 2 to about 10 carbon atoms," removing excess epiamine, contacting the impregnated support with an excess of a dialdehyde selected from the group consisting of dialdehydes with a formula OHC(CH 2 ) p CHO, where p is an integer from 2 to about 10, and phthalaldehydes, removing unreacted dialdehyde, and recovering the resulting support matrix.
Claim 9
Dependent Claim
10 words
The method of claim 6 where the support is alumina.
Claim 10
Dependent Claim
13 words
The method of claim 5 where the alkylenediamine is ethylenediamine, 1,2-diaminopropane, or 1,3-diaminopropane.
Claim 11
Dependent Claim
28 words
The method of claim 6 where the epiamine is the reaction product of poly(epichlorohydrin) with a polyamine selected from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine.
Claim 12
Dependent Claim
10 words
The method of claim 6 where the dialdehyde is glutaraldehyde.
Claim 13
Dependent Claim
17 words
An immobilized enzyme system comprising the support matrix of claim 1 having an enzyme covalently bonded thereto.
Claim 14
Dependent Claim
44 words
The immobilized enzyme system of claim 11 where the enzyme selected from the group consisting of glucose isomerase, glucoamylase, cholesteroloxidase, alcohol dehydrogenase, amino acid oxidase, arginase, asparaginase, catalase, chymotrypsin, cellulase, collagenase, deoxyribonuclease, ficin, histidase, lactase, peroxidase, lysozyme, the amylases, papain, rennin, ribonuclease and urease.
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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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |