Antidegradant blend
US11879050B2 · kind B2 · utility
0Cited by
33References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2019 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Jan 1, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/019
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention concerns an antidegradant blend for polymers, comprising: a. an antioxidant selected from one or more of: i. a phenolic antioxidant; ii. an organic phosphite antioxidant; and: b. an inorganic antioxidant or reducing agent; wherein the composition is absent any metal carboxylate or buffering agent having the capacity to buffer in aqueous solution at a pH range from 4 to 8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.