FIELD: pulp industry.
SUBSTANCE: invention relates to polymer compositions for surface sizing of paper and cardboard. Disclosed is a water-soluble polymer composition obtained by polymerisation in an aqueous polymerisation medium, which contains split cationic or split non-ionic starch, acrylamide and/or methacrylamide and >2 mol % of at least one unsaturated mono- and dicarboxylic acid(s) or salts thereof with respect to the total monomer content. Polymer composition has the resultant anionic charge at pH 7 within the range of −0.5 to −2.5 mg-eq/g and content of solid substances >5 wt %. Disclosed also is use of a polymer composition for surface sizing paper, cardboard or similar, as well as a composition for surface sizing, containing the disclosed water-soluble polymer composition.
EFFECT: technical result is when water-soluble composition is applied on surface of paper or cardboard, improved dry strength properties of said materials.
17 cl, 9 tbl, 6 ex
| Title |
Year |
Author |
Number |
| COMPOSITION FOR SURFACE SIZING, METHOD FOR ITS PREPARATION AND APPLICATION |
2018 |
- Lepo Anneli
- Turkki Tarja
- Turunen Elsi
|
RU2757921C2 |
| COMPOSITION FOR MODIFYING RHEOLOGICAL PROPERTIES OF COATING DYE, USE THEREOF AND COATING DYE |
2017 |
- Lepo, Anneli
- Peuranen, Helena
|
RU2712590C1 |
| COMPOSITION PROVIDING STRENGTH IN DRY STATE, ITS USE AND METHOD FOR PRODUCING PAPER, CARDBOARD AND SIMILAR MATERIALS |
2017 |
- Hietaniemi, Matti
- Karppi, Asko
- Virtanen, Mikko
|
RU2746075C2 |
| AQUEOUS POLYMER DISPERSION, USE THEREOF AND A METHOD OF PRODUCING AN AQUEOUS POLYMER DISPERSION |
2017 |
- Lepo, Anneli
- Peuranen, Helena
|
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| POLYMER COMPOSITION AND ITS APPLICATION OPTIONS |
2017 |
- Hietaniemi, Matti
- Carceller, Rosa
- Karppi, Asko
- Likander, Joonas
|
RU2761040C2 |
| METHOD OF PRODUCING A SIZING AGENT COMPOSITION, A SIZING AGENT COMPOSITION AND USE THEREOF |
2016 |
- Lepo, Anneli
- Turunen, Elsi
- Turkki, Tarya
|
RU2706306C1 |
| METHOD AND SYSTEM FOR PRODUCTION OF PAPER, CARDBOARD OR SIMILAR MATERIALS |
2017 |
- Hietaniemi, Matti
- Karppi, Asko
|
RU2715528C1 |
| SIZING COMPOSITION, ITS APPLICATION AND A METHOD FOR MANUFACTURING PAPER, CARDBOARD OR A SIMILAR MATERIAL |
2015 |
- Hietaniemi, Matti
- Hemmes, Jan-Luiken
- Grigoriev, Vladimir
- Karppi, Asko
|
RU2669629C2 |
| PAPER-STRENGTHENING AGENT AND PAPER STRENGTHENING METHOD |
1998 |
- Katsutosi Tanaka
- Juiti Kosidzi
- Masajuki Matoba
- Tomonori Nakamura
|
RU2146317C1 |
| GLYOXYLATED POLYACRYLAMIDE POLYMER COMPOSITION, USE THEREOF AND A METHOD OF IMPROVING STRENGTH CHARACTERISTICS OF PAPER, CARDBOARD AND THE LIKE |
2017 |
- Karppi, Asko
- Hietaniemi, Matti
- Halinen, Martina
- Timperi, Salla
- Grigoriev, Vladimir
- Virtanen, Mikko
|
RU2738176C1 |
