Polymer composition, its use and a surface size
US11447618B2 · kind B2 · utility
0Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Jan 30, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a water-soluble polymer composition obtained by polymerizing in an aqueous polymerisation medium, which comprises degraded starch, at least following monomers: acrylamide and/or methacrylamide, and >2 mol-% of at least one unsaturated mono- or dicarboxylic acid(s) or salts thereof. The polymer composition has an anionic net charge at pH 7 and a dry solids content of >5 weight-%. The invention relates also to the use of the polymer composition for surface sizing of paper, board or the like as well as to a surface size composition comprising it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.