Compositions of mixed aluminum alkaline-earth metal hydroxide type as antichlorine and antiacid agents for the stabilization of thermoplastic resins
US5670568A · kind A · utility
2Cited by
18References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1995 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Jul 19, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to compositions resulting from the reaction, in aqueous phase, of aluminum hydroxide, of alkali metal cation hydroxide and of calcium or strontium hydroxide. The addition of such a composition to PVC resins or to olefinic resins from Ziegler catalysis prevents the degradation of these resins under the effect of light or of heat, in particular during extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.