Delivery system and method of making article

Inactive Publication Date: 2011-02-03
KING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution ensures a prolonged and temperature-stable release of metal ions, maintaining safe and effective bacteria killing concentrations in water systems without causing toxicity or unsightly deposits, as demonstrated by examples using silver chloride and zinc-based materials.

Problems solved by technology

In addition, to provide a controlled release of metal ions, it is necessary to maintain the concentration of metal ions in water at sufficient levels to kill bacteria, yet not sufficiently high so as to cause the metal ions to come out of solution.

Method used

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  • Delivery system and method of making article
  • Delivery system and method of making article
  • Delivery system and method of making article

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020]A batch of water treatment composition was prepared using 20 pounds of limestone particles as a structure for carrying the water treatment material and using a spray coating method wherein the triple acting adhesive polyvinyl acetate was mixed with the water treatment material before application to the structure. In order to obtain silver chloride a mixture of 200 grams of silver nitrate was mixed with 74 grams of sodium chloride in a mixture of 403 grams of water and 681 grams of latex polyvinyl acetate. The mixture containing the silver chloride was sprayed on the limestone which was tumbled in a container for ten minutes to distribute the adhesive and the silver chloride over the limestone. The coated limestone was allowed to dry until it was non-tacky to the touch.

[0021]The water treatment composition was placed in a test body of water and the total silver ion concentration was measured and ranged from 30 to 40 parts per billion with the silver ion concentration being main...

example 2

[0023]A batch of water purification composition was made in accordance with Example 1 except an equal amount of polyurethane was used as the binder instead of polyvinyl acetate. The test to determine the amount of silver present was repeated. The results are as follows:

Time (hours)Silver (ppb)01.011.04238262433723712033

[0024]In both examples the measured concentration of silver (including colloidal silver and silver ions) was sufficient to kill bacteria yet not sufficiently high so as to introduce problems because of the presence of high levels of metal ions. When the metal ion yielding material yields silver ions, it is desirable to maintain the silver concentration between 10 and 100 ppb (parts per billion). As can be seen from example 1 and 2, within a matter of 4 hours the concentration of silver in the reservoir was within the acceptable range. If the metal ion yielding material yields zinc or tin ions, the acceptable aqueous concentration for metal ions generally range from 10...

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Abstract

A water treatment composition comprised of a metal ion yielding material secured to an adhesive, with the adhesive secured to a structure, so that when the structure is placed in a body of water the concentration of metal ions is maintained at level sufficient to kill bacteria and sufficient to permit release of metal ions over an extended period of time. Also, a method of securing a metal ion yielding material, as well as a method of manufacture of an article, by first adhering the metal ion yielding material to a structure and then forming the structure into an article for placement in a body of water to maintain the desired metal ion concentration therein.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS, IF ANY[0001]This application is a division of pending application Ser. No. 10 / 623,682, filed Jul. 21, 2003 and claims the benefits under 35 U.S.C. §119(e) of provisional application Ser. No. 60 / 177,558, filed Jan. 21, 2000. Application Ser. No. 60 / 177,558, is hereby incorporated by reference.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not applicable.REFERENCE TO A MICROFICHE APPENDIX, IF ANY[0003]Not applicable.FIELD OF THE INVENTION[0004]This invention relates generally to water treatment mechanisms and, more specifically, to the combination of a metal ion yielding material supported by a triple acting adhesive that firstly secures itself to the metal ion yielding material, secondly provides a controlled release of metal ions over a range of water temperatures and thirdly, simultaneously therewith secures the metal ion yielding material to a structure within the water system The invention also relates to a method of ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B05D3/12B05D1/28A01N59/16C02F1/00C02F1/28C02F1/50
CPCA01N59/16C02F1/001C02F1/285Y10T156/10C02F2103/42C02F1/505A01N2300/00
InventorKING, JOSEPH A.EDELSON, MARTIN ROBERT
OwnerKING TECH