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US 4,230,593 AGranted
Inorganic water-softening bead
AssigneeJ. M. Huber Corporation
InventorsJoseph E. Wagner, III, Lloyd E. Williams
Life of this patent
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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.
Claims3
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.
3 more elements
Dependencies are inferred from the claim text.