Method of decreasing aldehyde content in a polymeric material
US11220589B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jan 27, 2020 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Apr 3, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of decreasing aldehyde content in polymeric materials, for example in bottles comprising polyethylene terephthalate, uses a compound (A) which comprises first, second and third fragments which comprise a moiety Formula A) (A) and a moiety. (Formula B) NH (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.