Compositions and methods for reducing atmospheric ozone levels
US9669401B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 8, 2015 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Aug 8, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed herein are ozone reactive polymers comprising a structural repeat unit represented by the following formula XLI:wherein A is absent or a linking group selected from the group consisting of substituted or unsubstituted alkylene, substituted or unsubstituted heteroalkylene, substituted or unsubstituted cycloalkylene, substituted or unsubstituted heterocycloalkylene, substituted or unsubstituted arylene, substituted or unsubstituted heteroarylene, substituted or unsubstituted arylalkylene, and substituted or unsubstituted heteroarylalkylene; each of R1 and R2 is, independently, selected from the group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted arylalkyl, and substituted or unsubstituted heteroarylalkyl; and wherein the structural repeat unit comprises at least 10% by weight of the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.