Low molecular weight dry powder polymer for use as paper-making dry strength agent
US11939309B2 · kind B2 · utility
0Cited by
41References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2020 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Dec 9, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/285
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides an associative polymer, a powder, and a process for making a powder including, networking one or more associative polymers and one or more optional surfactants to form a wet gel, and forming a powder from the wet gel, wherein the associative polymer(s) have a weight average molecular weight of from about 10 kDa to about 2,000 kDa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.