Glyoxylated polyacrylamide composition strengthening agent
US7119148B2 · kind B2 · utility
16Cited by
27References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2004 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Jan 14, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for making a storage-stable glyoxalated polyacrylamide composition suitable for use as a strengthening agent for paper in which the glyoxal is added to the base polyacrylamide polymer in two portions and a scavenger for aldehyde groups is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.