Stabilizing composition for organic polymers
US5155153A · kind A · utility
28Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Sep 25, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/526
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A stabilizing composition for thermoplastic organic polymers containing measured quantities of: (a) a sterically hindered phenol; (b) a triarylphosphite; and (c) a dialkylthiodipropionate. Stabilized polymer compositions are also described containing a thermoplastic organic polymer, in particular a polyolefin, and a stabilizing quantity of said stabilizing composition, which possess excellent characteristics in relation to their melt flow index and color when subjected to repeated extrusion and in relation to their long-term thermal stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.