Crystalline particles of salts of glutamic acid N,N-diacetic acid
US9738594B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Dec 12, 2013 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Feb 14, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a salt of glutamic acid-N,N-diacetic acid (GLDA) of the formula GLDA-YmHn, wherein m is equal to or more than 0.5 and lower than or equal to 2.5, n+m=4, and wherein Y is a monovalent cation that is not a proton, comprising L-GLDA-YmHn to D-GLDA-YmHn in a range between 100:0 and 50:50 (L:D), characterized in that the salt is crystalline, a process to make such crystalline salt, and to uses of such salt, such as, in particular, in detergent compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.