Polymeric antioxidants
US7223432B2 · kind B2 · utility
38Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Apr 4, 2003 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Mar 23, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Antioxidant polymers of the present invention comprise repeat units that include one or both of Structural Formulas (I) and (II):wherein: The invention also includes methods of using and preparing these polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.