Processes of making monohydrate form of magnesium ammonium phosphate and processes of making paper using same
US7833385B2 · kind B2 · utility
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26References
14Claims
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Key dates
| Filing date | Nov 10, 2008 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Dec 4, 2028 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/67
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Processes for producing the monohydrate form of magnesium ammonium phosphate in slurry from use of environmentally friendly reactants are described. Slurry containing the monohydrate form of magnesium ammonium phosphate can be fed directly to, and mixed with, paper making feedstock, such as feedstock for cigarette paper, without transformation of the monohydrate form to the hexahydrate form of magnesium ammonium phosphate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.