公开(公告)号：US20210269980A1

公开(公告)日：2021-09-02

申请号：US17261191

申请日：2019-07-19

Applicant: KEMIRA OYJ

Inventor： Kaisa KARISALMI ,  Jaakko EKMAN ,  Marko KOLARI ,  Satu IKAVALKO ,  Boris DOSSMAN

IPC: D21H11/18 ,  C08H8/00 ,  C08L5/14 ,  C08L5/06 ,  C08L1/02 ,  C08L89/00 ,  D21H21/36 ,  D21H21/18

Abstract: The present invention relates to a microfibrillated cellulose composition comprising microfibrillated cellulose originating from agricultural biomass, comprising: ≥30 wt % cellulose, 1-15 wt % pectin, 8-25 wt % hemicellulose, 0-12 wt %, lignin, 0-15 wt % ash, and 0-8 wt % protein, based on dry solids content of said microfibrillated cellulose; and a biocide composition comprising at least two biocidal components, wherein the at least two biocidal components are selected from the groups of biocidal components consisting of: Group I: compounds with activated halogen atoms, Group II: heterocyclic N—S compounds, Group III: aldehydes, and Group IV: surface active biocidal compounds selected from the group consisting of quaternary ammonium compounds, long-chain alkylamines, guanidines and biguanidines, and any combination thereof, and the at least two biocidal components are selected from at least two different groups. The present invention further relates to its manufacture, and use in and manufacture of paper and paperboard products.

公开(公告)号：US20230053998A1

公开(公告)日：2023-02-23

申请号：US17794618

申请日：2021-01-22

Applicant: KEMIRA OYJ

Inventor： Mikko VIRTANEN ,  Kaisa KARISALMI ,  Sanna LEHTO ,  Jan-Luiken HEMMES

IPC: D21H11/18 ,  D21H17/29 ,  D21H17/25 ,  D21H17/45 ,  D21H21/20 ,  D21H21/10 ,  D21H23/04

Abstract: A product includes a microfibrillated cellulose composition, a starch derivative, and an anionic cellulose derivative, as a combined preparation for simultaneous or separate use. The anionic cellulose derivative has 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. Additionally, a paper sheet includes the product as an additive to increase the initial wet web strength and/or dry tensile strength of the paper sheet.

公开(公告)号：US20240287744A1

公开(公告)日：2024-08-29

申请号：US18570410

申请日：2022-06-16

Applicant: KEMIRA OYJ

Inventor： Jaana LAINE ,  Kaisa KARISALMI

IPC: D21H19/42 ,  C09D7/40 ,  C09D7/65 ,  C09D125/14 ,  C09D133/04 ,  C09D197/02 ,  D21H19/52 ,  D21H19/58 ,  D21H21/16 ,  D21H27/10

CPC classification number: D21H19/42 ,  C09D7/65 ,  C09D7/69 ,  C09D7/70 ,  C09D125/14 ,  C09D133/04 ,  C09D197/02 ,  D21H19/52 ,  D21H19/58 ,  D21H21/16 ,  D21H27/10

Abstract: The invention relates to a composition for providing barrier properties for a cellulosic fibre web, such as paper, board or the like. The coating composition comprises microfibril lated non-wood biomass, having a particle size D90

公开(公告)号：US20210269981A1

公开(公告)日：2021-09-02

申请号：US17261194

申请日：2019-07-19

Applicant: KEMIRA OYJ

Inventor： Kaisa KARISALMI

IPC: D21H11/18 ,  C08H8/00 ,  D21H21/18 ,  D21H17/23 ,  D21H17/25

Abstract: The present invention relates to a microfibrillated cellulose composition comprising a microfibrillated cellulose originating from agricultural biomass, said microfibrillated cellulose composition comprising: 30 wt % cellulose, 1-15 wt % pectin, 8-25 wt % hemicellulose, 0-12 wt %, lignin, 0-15 wt % ash, and 0-8 wt % protein, based on dry solids content of said composition. The present invention further relates to its manufacture, and use in and manufacture of paper and paperboard products.

公开(公告)号：US20210269623A1

公开(公告)日：2021-09-02

申请号：US17261192

申请日：2019-07-19

Applicant: KEMIRA OYJ

Inventor： Juhana AHOLA ,  Kaisa KARISALMI ,  Christos RAMPOTAS ,  Perttu HEISKA ,  Mika SUVANTO

IPC: C08L1/02 ,  C08L5/06 ,  C08L5/14 ,  C08L97/00 ,  C08H8/00 ,  B29B9/12

Abstract: The present invention relates to a granular microfibrillated cellulose product comprising a microfibrillated cellulose originating from agricultural biomass, said microfibrillated cellulose product comprising ≤75 wt % of cellulose, preferably ≤70 wt %, based on dry solids content of said product, wherein said granular microfibrillated cellulose product has a bulk density of 500-1200 kg/m3; a flowability of 5-60 ml/s, measured by a Copley scientific powder flowability tester having a stainless steel cylinder with orifice 16 or funnel with orifice 15; and a water content of at most 60 wt %, based on total microfibrillated cellulose product. The present invention further relates to its manufacture and usein and manufacture of paper and paperboard products.