发明公开
EP3854936A1 PRODUCT CONTAINING AN ANIONIC CELLULOSE DERIVATIVE AND ITS USE IN PAPER INDUSTRY
审中-公开
基本信息:
- 专利标题： PRODUCT CONTAINING AN ANIONIC CELLULOSE DERIVATIVE AND ITS USE IN PAPER INDUSTRY
- 申请号：EP20153258.7 申请日：2020-01-22
- 公开(公告)号：EP3854936A1 公开(公告)日：2021-07-28
- 发明人： VIRTANEN, Mikko , KARISALMI, Kaisa , LEHTO, Sanna , HEMMES, Jan-Luiken
- 申请人： Kemira Oyj
- 申请人地址： FI 00180 Helsinki Energiakatu 4
- 代理机构： Santarelli
- 主分类号： D21H11/18
- IPC分类号： D21H11/18 ; D21H17/25 ; D21H17/28 ; D21H17/29 ; D21H17/37 ; D21H17/68 ; D21H21/20 ; D21H17/00
摘要：
The present invention relates to a product comprising:
- a microfibrillated cellulose composition,
- a starch derivative, and
- an anionic cellulose derivative having a number average molecular weight comprised between 300000 g/mol and 800000 g/mol, and a degree of substitution comprised between 0.3 and 0.65,
as a combined preparation for simultaneous or separate use.
The present invention also relates to the use of this product, as a strength additive for increasing the initial wet web strength and/or dry tensile strength of a paper sheet.
- a microfibrillated cellulose composition,
- a starch derivative, and
- an anionic cellulose derivative having a number average molecular weight comprised between 300000 g/mol and 800000 g/mol, and a degree of substitution comprised between 0.3 and 0.65,
as a combined preparation for simultaneous or separate use.
The present invention also relates to the use of this product, as a strength additive for increasing the initial wet web strength and/or dry tensile strength of a paper sheet.