Concentrate for preparing a sealing solution for sealing mail pieces using tap water and method of making same
US9057005B2 · kind B2 · utility
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2References
8Claims
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Key dates
| Filing date | Mar 22, 2013 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Sep 6, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0091
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A powder and gel concentrate for a sealing solution is provided. The concentrate is comprised of a biocide, dye and acid buffer. This concentrate can be hydrated or dissolved using standard tap (mineralized) water to produce a sealing solution. The acid buffer keeps the minerals in the tap water suspended in solution, thereby preventing the solid scale (mineral build-up) that would otherwise clog the filters of a sealing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.