FIELD: chemistry.
SUBSTANCE: invention relates to a hardening agent for paper or cardboard. Hardening agent contains the first component and the second component. First component represents crushed cellulose fibres having grinding degree making more than 70°SR. Second component is a synthetic cationic polymer having charge density from 0.1 to 2.5 mEq/g, determined at pH 2, and an average molecular weight of more than 300,000 g/mol. Synthetic cationic polymer is a copolymer of methacrylamide or acrylamide.
EFFECT: improved strength properties of paper or cardboard.
17 cl, 2 tbl, 1 ex
| Title |
Year |
Author |
Number |
| METHOD FOR PRODUCTION OF PAPER OR CARDBOARD |
2018 |
- Lundin, Tom
- Karisalmi, Kaisa
- Sojakka, Heikki
|
RU2754187C2 |
| 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 |
| 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 |
| LIGNIN-CELLULOSE MATERIALS AND PRODUCT MADE FROM SAID MATERIALS |
2006 |
- Tan Zheng
- Lorenzoni Damaris
- Gojal Goupehl
- Jang Sehn
|
RU2387669C2 |
| CELLULOSE PRODUCT, METHOD OF ITS PRODUCTION AND APPLICATION |
2007 |
|
RU2422573C2 |
| METHOD FOR PRODUCTION OF PAPER AND CARDBOARD |
2012 |
|
RU2601465C2 |
| METHOD OF PRODUCING MATERIAL BASED ON INTERPENETRATING POLYMER NETWORKS, PRODUCT AND APPLICATION OF PRODUCT |
2015 |
- Karseller Roza
- Lundin Tom
- Khietaniemi Matti
|
RU2687950C2 |
| PAPER PRODUCTION METHOD |
2016 |
- Lu, Chen
- Chen, Tszyunkhua
- Kempbell, Klejton
- Rozenkrans, Skott
- Rabido, Dzhenna, Syu
|
RU2696382C1 |
| METHOD OF PREPARING AQUEOUS SUSPENSION FOR MANUFACTURING PAPER (VERSIONS), PAPER |
1996 |
- Dzhej A.Dikerson
- Garri Dzhozef Goldi
- Duglas Charl'Z Smit
- Ronal'D Richard Stejb
|
RU2150543C1 |
| FILLER AGGREGATE COMPOSITION AND ITS PRODUCTION |
2014 |
- Hietaniemi Matti
- Virtanen Mikko
|
RU2676070C2 |
