Layered sulfonate end terminated organophosphorus inorganic polymers
US4235991A · kind A · utility
24Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1978 |
| Grant date | Nov 25, 1980 |
| Priority date | — |
| Expiry date | Dec 4, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/49
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Sulfo-organophosphonic acid compounds react by a metathesis reaction in a liquid medium with tetravalent metal ions, yielding layered crystalline to amorphous inorganic polymers having the empirical formula M(O.sub.3 PRSO.sub.3 H).sub.2 where M is a tetravalent metal and R is an organic group covalently bonded to phosphorus and the terminal sulfonic acid group. One use for the compounds is as ion exchangers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.