Benzene phosphonous acid compounds, their production and use as stabilizers for organic materials
US4075163A · kind A · utility
30Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1976 |
| Grant date | Feb 21, 1978 |
| Priority date | — |
| Expiry date | Mar 19, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K15/324
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The purpose of the invention are new benzene phosphonous acid compounds in which two to four benzene nuclei are bound together and which contain one to three phosphorus atoms. The new compounds are free acids, their salts with inorganic cations, their esters, thioesters or amides. The invention concerns also the manufacture of these benzene phosphonous acid compounds and their use for the stabilization of organic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.