Method for preparing melamine salt of pentaerypolyol phosphoric acid
US7250509B1 · kind B1 · utility
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15Claims
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Key dates
| Filing date | May 31, 2006 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Jun 3, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/5205
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing a melamine salt of pentaerypolyol phosphoric acid is provided. The method comprises the following steps of: ball milling a mixture of pentaerypolyol and phosphorus pentoxide (P2O5) under a solvent-free reacting environment to obtain a pentaerypolyol phosphoric acid, and ball milling a mixture of a pentaerypolyol phosphoric acid and melamine without organic solvent reacting environment to obtain a melamine salt of pentaerypolyol phosphoric acid.
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