Polymers for controlling soda ash crystal formation
US4374102A · kind A · utility
18Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1981 |
| Grant date | Feb 15, 1983 |
| Priority date | — |
| Expiry date | Nov 13, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D7/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Poly N,N-dimethylaminomethyl acrylamide, when added to clarified trona solutions, improves the crystals subsequently formed from these solutions. Preferably, the poly N,N,-dimethylamino methyl acrylamide crystal modifier is used in conjunction with a water-soluble cationically charged coagulant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.