Patent US4230593A successfully refreshed from Google Patents.
US4230593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic water-softening bead
Assignee: JM Huber Corp
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Filing: 1979-04-02
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Granted: 1980-10-28
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Expires: 1999-04-02
Abstract
Abstract A non-water dispersible water-softening bead is disclosed having from 80 to 90% sodium alumino silicate and from 10 to 20% low density polyethylene. The bead has a diameter of between 200 and 1000 microns and a calcium capacity of at least 200 mg calcium carbonate/g. The sodium alumino silicate has a silica to aluminum oxide molar ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide molar ratio of between 0.8:1 and 1.2:1.
Inventors
- 👤 Joseph E. Wagner, III
- 👤 Lloyd E. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:10
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/08; B01J39/14; B01J39/16; B01J39/17; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
A method of producing non-water dispersible water-softening beads comprising the steps of: (a) adding from 80 to 90 parts of a sodium alumino silicate having a silica to aluminum oxide molar ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide molar ratio of between 0.8:1 and 1.2:1 and from 10 to 20 parts of low density polyethylene to a disk pelletizer. (b) heating the silicate and polyethylene to the softening point of the polyethylene while forming beads in the pelletizer; (c) cooling the beads to below the softening point of the polyethylene; (d) removing the cooled beads from the pelletizer; and (e) screening the beads to obtain beads having a diameter of between 200 to 1000 microns and a calcium capacity of at least 200 mg calcium carbonate/g.
Claim 2
Independent Claim
132 words
A method of producing non-water dispersible water-softening beads comprising the steps of: (a) adding from 80 to 90 parts of a sodium alumino silicate having a silica to aluminum oxide molar ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide molar ratio of between 0.8:1 and 1.2:1 and from 10 to 20 parts of low density polyethylene to a disk pelletizer. (b) heating the silicate and polyethylene to the softening point of the polyethylene while forming beads in the pelletizer; (c) cooling the beads to below the softening point of the polyethylene; (d) removing the cooled beads from the pelletizer; and (e) screening the beads to obtain beads having a diameter of between 200 to 1000 microns and a calcium capacity of at least 200 mg calcium carbonate/g.
Claim 3
Dependent Claim
35 words
A method of producing non-water dispersible water-softening beads according to claim 1 wherein said polyethylene has a softening of about 102° C., a hardness of about 7.5 dmm and a density of about 0.91 g/cc.
Claim 4
Dependent Claim
23 words
A method of producing non-water dispersible water-softening beads according to claim 1 wherein said silicate and polyethylene are heated by infra red heat.
References Cited (Backward Citations)
US2460516A
Cited
US3048537A
Cited
US3181231A
Cited
US3375933A
Cited
US3538020A
Cited
US3651948A
Cited
DE2055423A1
Cited
GB1390668A
Cited
US4071377A
Cited
US4066394A
Cited
US4096081A
Cited
US4061807A
Cited
US4120653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |