Benzene phosphonous acid compounds, their production and use as stabilizers for organic materials
US3962175A · kind A · utility
7Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1974 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Apr 25, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K15/324
- WIPO fieldBasic materials chemistry
- 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.