Ash retention additive and methods of using the same
US10961662B1 · kind B1 · utility
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28References
30Claims
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Key dates
| Filing date | Dec 23, 2019 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Dec 23, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided herein are additives for paper compositions comprising poly(ethylene oxide) (PEO) and polyacrylamide polymer that are capable of increasing the ash retention of the paper composition. Also provided are methods of making a paper composition using the additives of the disclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.