Stabilized compositions based on alpha-olefin polymers
US4670493A · kind A · utility
11Cited by
7References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 4, 1985 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Jan 4, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K13/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Stabilized against degradation by oxidizing liquids, based on polymers of alpha-olefins such as propylene, containing a phenolic antioxidant, a phosphonite and a sulfur-containing stabilizer chosen from the esters derived from aliphatic polyols and alkylthiodipropionic acids and from combinations of a metal sulfide with one of these esters or with an organic polysulfide and optionally also containing an organic phosphite and an anti-acid agent. These compositions exhibit outstanding resistance to the phenomenon of oxidative degradation produced particularly by the contact with hot washing products of all kinds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.