Sulfamic acid as a catalyst for the polymerization of chlorocyclophosphazenes
US4242316A · kind A · utility
2Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1979 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Jun 29, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/0986
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymerization process for the solution or bulk polymerization of chlorocyclophosphazenes using sulfamic acid compounds or derivatives of sulfamic acid as catalyst. Poly(aryloxyphosphazene) resulting therefrom can be controlled as to molecular weight, and molecular weight distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.