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公开(公告)号：US20180051416A1
公开(公告)日：2018-02-22
申请号：US15543633
申请日：2016-02-16
Applicant: Kemira Oyj
Inventor： Chen LU , Junhua CHEN , Clay CAMPBELL , Scott ROSENCRANCE , Jenna Sue RABIDEAU
IPC: D21H17/37 , D21H17/56 , D21H17/64 , D21H17/65 , D21H17/06 , D21H21/20 , D21H23/10 , D21H23/16 , D21H23/22 , D21H23/66
Abstract: A method for manufacturing paper is disclosed. A pulp slurry is produced, a paper sheet is formed from the slurry, an aldehyde functionalized polymer or polymers is added to the slurry before and/or after sheet formation, and a water soluble acid is added on the paper sheet.
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Patent Agency Ranking
2.发明申请公开(公告)号：US20200232165A1
公开(公告)日：2020-07-23
申请号：US16644175
申请日：2018-09-26
Applicant: Kemira Oyj
Inventor： Yuping LUO , Junhua CHEN , Zheng DANG , Jennifer RISER
Abstract: A surface treatment composition is disclosed including anionic polyacrylamide, which has a weight average molecular weight, MW, in the range of 100 000-2 000 000 g/mol, and free glyoxal. Further disclosed is a use of the surface treatment composition, a method for producing paper, board or the like and a paper product.
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3.发明公开公开(公告)号：US20240318383A1
公开(公告)日：2024-09-26
申请号：US18269826
申请日：2021-12-27
Applicant: KEMIRA OYJ
Inventor： Zheng DANG , Junhua CHEN , Clayton CAMPBELL , Yong ZOU , Yuping LUO
Abstract: The present invention provides a softener concentrate and a softener emulsion comprising imidazoline-based surfactant, lanolin-based softener, phospholipids and surfactant blend. The present invention further provides a process for producing a softener emulsion and controlling the viscosity of a softener emulsion. The present invention also provides a method for producing paper, tissue or paperboard, in which method a softener according to the present invention is used.
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公开(公告)号：US20220195672A1
公开(公告)日：2022-06-23
申请号：US17599797
申请日：2020-04-01
Applicant: KEMIRA OYJ
Inventor： Clayton CAMPBELL , Junhua CHEN , Zheng DANG
Abstract: Methods for making paper with improved strength and methods for improving paper strength, using a metal chelate and an organic polymer, and improved strength paper made through these processes.
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公开(公告)号：US20210189659A1
公开(公告)日：2021-06-24
申请号：US17055152
申请日：2018-05-14
Applicant: Kemira OYJ
Inventor： Yuping LUO , Junhua CHEN , Zheng DANG
Abstract: Embodiments of the present invention relate to a method of making a paper comprising the steps of: a) providing a cationic wet strength resin comprising a polyamidoamine epihalohydrin, a condensation copolymer of epihalohydrin and amine, or combination thereof; b) providing an anionic polymer; c) co-mixing the cationic wet strength resin and the anionic polymer to provide a composition comprising polyelectrolyte complexes; d) providing an aqueous pulp slurry, draining the aqueous pulp slurry on a screen to form a wet fiber web, and drying the wet fiber web to obtain the paper, wherein said co-mixed composition is introduced to the aqueous pulp slurry or on the formed wet fiber web. Embodiments of the present invention further relates to a paper wet strength composition, its use in paper making and a paper obtainable therefrom.
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公开(公告)号：US20160201267A1
公开(公告)日：2016-07-14
申请号：US15046741
申请日：2016-02-18
Applicant: KEMIRA OYJ
Inventor： Junhua CHEN , Chen LU , Scott ROSENCRANCE , Frank ZIMMERMANN
CPC classification number: D21H17/55 , D21H17/25 , D21H17/37 , D21H17/375 , D21H17/47 , D21H21/10 , D21H21/18 , D21H21/20 , D21H27/002
Abstract: One or more embodiments include paper, methods of making paper, compositions, and the like, are provided. In various exemplary embodiments described herein, a paper material may be formed by treating a cellulosic fiber or an aqueous pulp slurry with a treatment composition comprising an anionic polyacrylamide resin and an aldehyde-functionalized polymer resin.
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