Low molecular weight dry powder polymer for use as paper-making dry strength agent
US10920065B2 · kind B2 · utility
0Cited by
40References
13Claims
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Key dates
| Filing date | Jun 12, 2017 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Jun 12, 2037 |
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 comprising, networking one or more associative polymer(s) and one or more optional surfactant(s) 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.