Patent US4383047A successfully refreshed from Google Patents.
US4383047A
Expired / Lapsed
US
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High performance anion-exchange chromatographic packing composition
Assignee: Dionex Corp
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Filing: 1981-02-17
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Granted: 1983-05-10
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Expires: 2001-02-17
Abstract
Abstract An improved pellicular type (agglomerated) anion-exchange chromatographic packing composition which comprises: Component A, a substrate which consists essentially of particles of insoluble synthetic resin, having cation-exchanging sites at least on their available surfaces, the Component A particles being of a diameter of between about 5 to 75 microns and of low porosity relative to Component B microparticles, described below, and Component B, which consists essentially of microparticles of insoluble synthetic resin, having a volume average diameter of less than about 900 and greater than about 50 Angstroms, the microparticles having anion-exchanging sites, at least on their outer surfaces, which attract available cation sites of Component A, wherein the microparticles of Component B are attached as a monolayer to the available surfaces of the Component A particles.
Inventors
- 👤 Timothy S. Stevens
- 👤 Martin A. Langhorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:22
CPC Classifications
B; B01; B01D; B01D15/00; B01D15/08; B01D15/26; B01D15/36; B01D15/361; B01D15/363; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/2803; B01J20/30; B01J20/32; B01J20/3214; B01J20/3217; B01J20/3221; B01J41/00; B01J41/20; B01J47/00; B01J47/016; G; G01; G01N; G01N30/00; G01N30/02; G01N30/50; G01N30/56; G01N30/96; B01J2220/00; B01J2220/50; B01J2220/54
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
126 words
An improved pellicular type (agglomerated) anion-exchange chromatographic packing composition which comprises: Component A, a substrate which consists essentially of particles of insoluble synthetic resin, having cation-exchanging sites at least on their available surfaces, the Component A particles being of a diameter of between about 5 to 75 microns and of low porosity relative to Component B microparticles, described below, and Component B, which consists essentially of microparticles of insoluble synthetic resin, having a volume average diameter of less than about 900 and greater than about 50 Angstroms, the microparticles having anion-exchanging sites, at least on their outer surfaces, which attract available cation sites of Component A, wherein the microparticles of Component B are attached as a monolayer to the available surfaces of the Component A particles.
Claim 2
Dependent Claim
126 words
An improved pellicular type (agglomerated) anion-exchange chromatographic packing composition which comprises: Component A, a substrate which consists essentially of particles of insoluble synthetic resin, having cation-exchanging sites at least on their available surfaces, the Component A particles being of a diameter of between about 5 to 75 microns and of low porosity relative to Component B microparticles, described below, and Component B, which consists essentially of microparticles of insoluble synthetic resin, having a volume average diameter of less than about 900 and greater than about 50 Angstroms, the microparticles having anion-exchanging sites, at least on their outer surfaces, which attract available cation sites of Component A, wherein the microparticles of Component B are attached as a monolayer to the available surfaces of the Component A particles.
Claim 3
Dependent Claim
21 words
The composition of claim 1 in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 4
Dependent Claim
11 words
The composition of claim 1 in which the microparticles are monodisperse.
Claim 5
Dependent Claim
19 words
The composition of claim 3 comprising Component A consisting essentially of insoluble synthetic resin particles of the gel type.
Claim 6
Dependent Claim
21 words
The composition of claim 4 in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 7
Dependent Claim
39 words
The composition of claim 1 comprising Component A consisting essentially of particles of between about 5 to 35 microns diameter, and Component B in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 8
Dependent Claim
21 words
The composition of claim 6 in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 9
Dependent Claim
11 words
The composition of claim 6 in which the microparticles are monodisperse.
Claim 10
Dependent Claim
19 words
The composition of claim 8 comprising Component A consisting essentially of insoluble synthetic resin particles of the gel type.
Claim 11
Dependent Claim
21 words
The composition of claim 9 in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 12
Dependent Claim
39 words
The composition of claim 1 comprising Component A consisting essentially of particles of between about 5 to 20 microns diameter, and Component B in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 13
Dependent Claim
11 words
The composition of claim 11 in which the microparticles are monodisperse.
Claim 14
Dependent Claim
19 words
The composition of claim 12 comprising Component A consisting essentially of insoluble synthetic resin particles of the gel type.
Claim 15
Dependent Claim
33 words
The composition of claim 1 comprising Component A consisting essentially of particles of a sulfonated poly(vinyl aromatic) resin, and Component B consisting essentially of an aminated poly(vinyl aromatic) resin of latex derived microparticles.
Claim 16
Dependent Claim
21 words
The composition of claim 14 in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 17
Dependent Claim
18 words
The composition of claim 14 comprising Component A consisting essentially of insoluble synthetic resin of the gel type.
Claim 18
Dependent Claim
21 words
The composition of claim 16 in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 19
Dependent Claim
39 words
The composition of claim 14 comprising Component A consisting essentially of particles of between about 5 to 35 microns diameter, and Component B in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 20
Dependent Claim
21 words
The composition of claim 18 in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 21
Dependent Claim
20 words
The composition of claim 18 in which Component A consists essentially of a gel form resin of a styrene-divinylbenzene copolymer.
Claim 22
Dependent Claim
39 words
The composition of claim 14 comprising Component A consisting essentially of particles of between about 5 to 20 microns diameter, and Component B in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 23
Dependent Claim
20 words
The composition of claim 21 in which Component A consists essentially of a gel form resin of a styrene-divinylbenzene copolymer.
Claim 24
Dependent Claim
135 words
A chromatographic analytical column, the column containing a packed bed of a pellicular type (agglomerated) anion-exchange chromatographic packing which comprises: Component A, a substrate which consists essentially of particles of insoluble synthetic resin, having cation-exchanging sites at least on their available surfaces, the Component A particles being of a diameter of between about 5 to 75 microns and of low porosity relative to Component B microparticles, described below, and Component B, which consists essentially of microparticles of insoluble synthetic resin, having a volume average diameter of less than about 900 and greater than about 50 Angstroms, the microparticles having anion-exchanging sites, at least on their outer surfaces, which attract available cation sites of Component A, wherein the microparticles of Component B are attached as a monolayer to the available surfaces of the Component A particles.
Claim 25
Dependent Claim
135 words
A chromatographic analytical column, the column containing a packed bed of a pellicular type (agglomerated) anion-exchange chromatographic packing which comprises: Component A, a substrate which consists essentially of particles of insoluble synthetic resin, having cation-exchanging sites at least on their available surfaces, the Component A particles being of a diameter of between about 5 to 75 microns and of low porosity relative to Component B microparticles, described below, and Component B, which consists essentially of microparticles of insoluble synthetic resin, having a volume average diameter of less than about 900 and greater than about 50 Angstroms, the microparticles having anion-exchanging sites, at least on their outer surfaces, which attract available cation sites of Component A, wherein the microparticles of Component B are attached as a monolayer to the available surfaces of the Component A particles.
Claim 26
Dependent Claim
22 words
The packed column of claim 23 in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 27
Dependent Claim
12 words
The packed column of claim 23 in which the microparticles are monodisperse.
Claim 28
Dependent Claim
20 words
The packed column of claim 25 comprising Component A consisting essentially of insoluble synthetic resin particles of the gel type.
Claim 29
Dependent Claim
22 words
The packed column of claim 26 in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 30
Dependent Claim
40 words
The packed column of claim 23 comprising Component A consisting essentially of particles of between about 5 to 35 microns diameter, and Component B in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 31
Dependent Claim
22 words
The packed column of claim 28 in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 32
Dependent Claim
12 words
The packed column of claim 28 in which the microparticles are monodisperse.
Claim 33
Dependent Claim
20 words
The packed column of claim 30 comprising Component A consisting essentially of insoluble synthetic resin particles of the gel type.
Claim 34
Dependent Claim
22 words
The packed column of claim 31 in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 35
Dependent Claim
40 words
The packed column of claim 23 comprising Component A consisting essentially of particles of between about 5 to 20 microns diameter, and Component B in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 36
Dependent Claim
12 words
The packed column of claim 33 in which the microparticles are monodisperse.
Claim 37
Dependent Claim
20 words
The packed column of claim 34 comprising Component A consisting essentially of insoluble synthetic resin particles of the gel type.
Claim 38
Dependent Claim
34 words
The packed column of claim 23 comprising Component A consisting essentially of particles of a sulfonated poly(vinyl aromatic) resin, and Component B consisting essentially of an aminated poly(vinyl aromatic) resin of latex derived microparticles.
Claim 39
Dependent Claim
22 words
The packed column of claim 36 in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 40
Dependent Claim
19 words
The packed column of claim 36 comprising Component A consisting essentially of insoluble synthetic resin of the gel type.
Claim 41
Dependent Claim
22 words
The packed column of claim 38 in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 42
Dependent Claim
40 words
The packed column of claim 36 comprising Component A consisting essentially of particles of between about 5 to 35 microns diameter, and Component B in which the volume average diameter of the microparticles is not greater than about 600 Angstroms.
Claim 43
Dependent Claim
22 words
The packed column of claim 40 in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 44
Dependent Claim
21 words
The packed column of claim 40 in which Component A consists essentially of a gel form resin of a styrene-divinylbenzene copolymer.
Claim 45
Dependent Claim
40 words
The packed column of claim 36 comprising Component A consisting essentially of particles of between about 5 to 20 microns diameter, and Component B in which the volume average diameter of the microparticles is not greater than about 300 Angstroms.
Claim 46
Dependent Claim
21 words
The packed column of claim 43 in which Component A consists essentially of a gel form resin of a styrene-divinylbenzene copolymer.
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) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |