Patent US4522724A successfully refreshed from Google Patents.
US4522724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazonium affinity matrixes
Assignee: Avantor Performance Materials LLC
•
Filing: 1984-03-02
•
Granted: 1985-06-11
•
Expires: 2004-03-02
Abstract
Abstract Improved diazonium affinity matrixes are provided which are storable stable and may be stored for extended periods for future use. The improved affinity matrixes are diazonium silica gel affinity matrixes containing an amine linkage and especially the fluoborate salts thereof.
Inventors
- 👤 Hugh E. Ramsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:05
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/281; B01J20/291; B01D; B01D15/00; B01D15/08; B01D15/26; B01D15/38; B01D15/3804; B01J20/02; B01J20/10; B01J20/103; B01J20/28; B01J20/28002; B01J20/28004; B01J20/28054; B01J20/28078; B01J20/286; B01J20/30; B01J20/32; B01J20/3202; B01J20/3204; B01J20/3231; B01J20/3242; B01J20/3244; B01J20/3246; B01J20/3257; B01J20/3261; B01D15/3809; B01J2220/00; B01J2220/50; B01J2220/54; B01J2220/58
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
14 words
An aminobenzylaminopropyl silica gel of the formula ##STR5## wherein ##STR6## is a silica gel.
Claim 2
Dependent Claim
14 words
An aminobenzylaminopropyl silica gel of the formula ##STR5## wherein ##STR6## is a silica gel.
Claim 3
Dependent Claim
20 words
A diazobenzylaminopropyl silica gel of the formula ##STR7## wherein ##STR8## is a silica gel and X - is an anion.
Claim 4
Dependent Claim
20 words
A diazobenzylaminopropyl silica gel of the formula ##STR7## wherein ##STR8## is a silica gel and X - is an anion.
Claim 5
Dependent Claim
22 words
A diazobenzylaminopropyl silica gel of claim 2 wherein (X - ) is selected from the group consisting of chloride or fluoborate radicals.
Claim 6
Dependent Claim
12 words
A diazobenzylaminopropyl silica gel of claim 3 having the formula ##STR9## .
Claim 7
Dependent Claim
15 words
A diazobenzylaminopropyl silica gel of claim 4 which is a fluoborate salt p-diazobenzylaminopropyl silica gel.
Claim 8
Dependent Claim
16 words
A diazobenzylaminopropyl silica gel of claim 4 which is a fluoborate salt of m-diazobenzylaminopropyl silica gel.
Claim 9
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 2 as the affinity matrix.
Claim 10
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 3 as the affinity matrix.
Claim 11
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 4 as the affinity matrix.
Claim 12
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 5 as the affinity matrix.
Claim 13
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 6 as the affinity matrix.
Claim 14
Dependent Claim
37 words
A diazobenzylaminopropyl silica gel of claim 2 wherein the silica gel has an average particle diameter of from about 3 to about 70 microns and an average pore size of from about 50 to about 1000Angstrom units.
Claim 15
Dependent Claim
38 words
A diazobenzylaminopropyl silica gel of claim 3 wherein the silica gel has an average particle diameter of from about 3 to about 70 microns and an average pore size of from about 50 to about 1000 Angstrom units.
Claim 16
Dependent Claim
38 words
A diazobenzylaminopropyl silica gel of claim 4 wherein the silica gel has an average particle diameter of from about 3 to about 70 microns and an average pore size of from about 50 to about 1000 Angstrom units.
Claim 17
Dependent Claim
38 words
A diazobenzylaminopropyl silica gel of claim 5 wherein the silica gel has an average particle diameter of from about 3 to about 70 microns and an average pore size of from about 50 to about 1000 Angstrom units.
Claim 18
Dependent Claim
38 words
A diazobenzylaminopropyl silica gel of claim 6 wherein the silica gel has an average particle diameter of from about 3 to about 70 microns and an average pore size of from about 50 to about 1000 Angstrom units.
Claim 19
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 12 as the affinity matrix.
Claim 20
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 13 as the affinity matrix.
Claim 21
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 14 as the affinity matrix.
Claim 22
Dependent Claim
47 words
In a method of separating or purifying a substance from a solution by reacting the substance in the solution with an affinity matrix having a ligand covalently bound to the affinity matrix, the improvement comprising employing an diazobenzylaminopropyl silica gel of claim 15 as the affinity matrix.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |