Hydrophobic vinylamine-containing polymer compositions and their use in papermaking applications
US10618992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2018 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Oct 10, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/3054
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein are hydrophobic vinylamine-containing polymers useful as papermaking performance additives for enhancing paper softness with little or no negative effect on paper dry strength properties. The hydrophobic vinylamine-containing polymers are produced by incorporating hydrophobic functional property into primary amine moiety of the vinylamine-containing polymers via reactions with reactive hydrophobes. The hydrophobically modified vinylamine-containing polymers can be further used as base polymers for polymerization with a vinyl monomer by free radical initiated polymerization. The compositions of those hydrophobic vinylamine-containing polymers have shown improved softness, reduced coefficient friction to paper products while maintained or improved dry strength properties of the paper products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.