US4230593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic water-softening bead
Assignee: JM Huber Corp
•
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 12:22
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.
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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) | 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 |