Paper-making aid composition and process for increasing ash retention of finished paper
US9873986B2 · kind B2 · utility
3Cited by
17References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2014 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Sep 12, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/375
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A paper-making aid composition comprising dialdehyde-modified polyacrylamide-type strengthening agent, polyacrylamide-type strengthening agent and water and having a pH value of 6 or more is provided. A method of paper-making by using the paper-making aid composition is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.