Crystalline form of 2-acrylamido-2-methylpropanesulphonic acid sodium salt
AssigneeSnf Group
InventorsCédrick FAVERO, Benoît LEGRAS, Johann KIEFFER
Life of this patent
Estimating the term…
Abstract
The present invention relates to a crystalline form of 2-acrylamido-2-methylpropanesulphonic acid of the sodium salt ATBS.Na having an X-ray powder diffraction pattern comprising peaks at 11.7°; 12.2°; 13.2°; 13.5°; 15.6°; 16.8°; 17.8°; 18.5°; 19.1°; 20.6°; 21.4°; 23.3°; 25.1°; 25.8°; 26.9°; 29.1°; 29.5°; 31.0°; 33.0°; 33.6°; 34.4°; 35.2°; 35.9°; 37.1°; 38.4°; 39.6°; 41.1°; 42.9°; 45.1°; 46.0°; 47.2°; 47.6 2-theta angles (+/−0.1°).
Claims20
A crystalline form of 2-acrylamido-2-methylpropanesulphonic acid sodium salt ATBS.Na having an X-ray powder diffraction pattern comprising peaks at 11.7°;
- 12.2°;
- 13.2°;
- 13.5°;
- 15.6°;
- 16.8°;
- 17.8°;
- 18.5°;
- 19.1°;
- 20.6°;
- 21.4°;
- 23.3°;
- 25.1°;
- 25.8°;
- 26.9°;
- 29.1°;
- 29.5°;
- 31.0°;
- 33.0°;
- 33.6°;
- 34.4°;
- 35.2°;
- 35.9°;
- 37.1°;
- 38.4°;
- 39.6°;
- 41.1°;
- 42.9°;
- 45.1°;
- 46.0°;
- 47.2°;
- and 47.6° 2-theta angles (+/−0.1°).
A polymer obtained at least partially from a crystalline form of 2-acrylamido-2-methylpropanesulphonic acid of the sodium salt ATBS.Na having an X-ray powder diffraction pattern comprising peaks at 11.7°;
- 12.2°;
- 13.2°;
- 13.5°;
- 15.6°;
- 16.8°;
- 17.8°;
- 18.5°;
- 19.1°;
- 20.6°;
- 21.4°;
- 23.3°;
- 25.1°;
- 25.8°;
- 26.9°;
- 29.1°;
- 29.5°;
- 31.0°;
- 33.0°;
- 33.6°;
- 34.4°;
- 35.2°;
- 35.9°;
- 37.1°;
- 38.4°;
- 39.6°;
- 41.1°;
- 42.9°;
- 45.1°;
- 46.0°;
- 47.2°;
- and 47.6° 2-theta angles (+/−0.1°).
Dependencies are inferred from the claim text.