Grafted polyvinyl alcohol polymer, formulations containing the same, and creping methods
US11560443B2 · kind B2 · utility
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30References
25Claims
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Key dates
| Filing date | Sep 3, 2020 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Feb 24, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2029/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A grafted polyvinyl alcohol polymer includes a polyvinyl alcohol main chain and a plurality of side chains grafted to the polyvinyl alcohol main chain. One or more of the side chains from the plurality of side chains include one or more units selected from: an aliphatic carboxylic acid, an aliphatic amide, an amino alkyl (meth)acrylate, a hydroxylated alkyl (meth)acrylate, or any combinations thereof. The grafted polyvinyl alcohol polymer can be included in a formulation that also includes water, and the formulation can be used as an adhesive in a creping process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.