Cellulose composition

Patent metadata

Field	Value
Publication number	US-2021269980-A1
Application number	US-201917261191-A
Country	US
Kind code	A1
Filing date	Jul 19, 2019
Priority date	Jul 19, 2018
Publication date	Sep 2, 2021
Grant date	—

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, and0-8 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, andGroup 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.

First claim

1 . A microfibrillated cellulose composition comprising,
microfibrillated cellulose originating from agricultural biomass, comprising: ≥30 wt % cellulose, preferably 50-99 wt % or 60-90 wt %, 1-15 wt % pectin, preferably 1-10 wt % or 1-5 wt %, 8-25 wt % hemicellulose, preferably 8-20 wt % or 10-20 wt %, 0-12 wt %, lignin, preferably 1-12 wt % or 5-12 wt %, 0-15 wt % ash, preferably 1-15 wt % or 1-10 wt %, and 0-8 wt % protein, preferably 1-8 wt % or 1-6 wt %,
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, preferably selected from Group I and at least one of Group II, Group III, or Group IV, or selected from Group II and Group III.

2 . The microfibrillated cellulose composition according to claim 1 , wherein
the biocidal components of Group I are selected from the group consisting of bromonitrilopropionamides, (tri)chloromethylsulphones, chlorocyanovinylphenylsulphones, bromonitropropan(di)ols, bromonitroacetamides, chlorodithiolones, and any combination thereof; preferably selected from the group consisting of 2,2-dibromo-3-nitrilopropionamide (DBNPA), bis(trichloromethyl)sulphone, (2-chloro-2-cyanovinyl)-phenylsulphone, 2-bromo-2-nitro-propan-1-ol (BNP), 2-bromo-2-nitropropane-1,3-diol (Bronopol), 2,2-dibromo-2-nitroacetamide and 4,5-dichloro-3H-1,2-dithiol-3-one, and any combination thereof; more preferably selected from the group consisting of 2,2-dibromo-3-nitrilopropionamide, 2-bromo-2-nitropropane-1,3-diol, and any combination thereof; the biocidal components of Group II are selected from the group consisting of alkylisothiazolinones, benzisothiazolinones, thiazolbenzimidazoles, thiocyanomethylthiobenzthiazoles, 2-Mercaptobenzothiazole(A)↔Benzothiazolin-2-thione(B), and any combination thereof; preferably selected from the group consisting of 2-Methyl-4-isothiazolin-3-one (MI), 5-Chloro-2-methyl-4-isothiazolin-3-one (CMI), 2-n-Octyl-4-isothiazolin-3-one (01), 4,5-Dichloro-2-(n-octyl)-4-isothiazolin-3-one (DCOI), 1,2-Benzisothiazolin-3-one (BIT), 2-(1,3-Thiazol-4-yl)benzimidazole (TBZ), 2-Mercaptobenzothiazole(A)↔Benzothiazolin-2-thione(B) (MBT), 2-(Thiocyanomethylthio)benzthiazole (TCMBT), and any combination thereof; more preferably selected from the group consisting of 2-Methyl-4-isothiazolin-3-one (MI), 5-Choloro-2-methyl-4-isothiazolin-3-one (CMI), 2-n-Octyl-4-isothiazolin-3-one (01), 1,2-Benzisothiazolin-3-one (BIT), 2-Mercaptobenzothiazole(A)↔Benzothiazolin-2-thione(B) (MBT), and any combination thereof; more preferably selected from the group consisting of 2-Methyl-4-isothiazolin-3-one (MI), 5-Choloro-2-methyl-4-isothiazolin-3-one (CMI), 2-n-Octyl-4-isothiazolin-3-one (OI), 1,2-Benzisothiazolin-3-one (BIT),), and any combination thereof; the biocidal components of Group III are selected from the group consisting of glutaraldehyde, formaldehyde, and any combination thereof, preferably glutaraldehyde; and the biocidal components of Group IV are selected from the group consisting of N-Alkyl(C 8 -C 18 )-N,N-dimethyl-N-benzylammonium chloride (i.e. Benzalkonium chloride), Di-n-decyl-dimethylammonium chloride (DDAC), Dioctyl-dimethylammonium chloride, Polymeric quaternary ammonium compounds, Dodecylamine, Bis(3-aminopropyl)dodecylamine, poly(hexamethylenebiguanide)hydrochloride (PHMB), dodecylguanidine hydrochloride (DGH), and any combination thereof; preferably selected from the group consisting of N-Alkyl(C 8 -C 18 )-N,N-dimethyl-N-benzylammonium chloride (i.e. Benzalkonium chloride), Di-n-decyl-dimethylammonium chloride (DDAC), dodecylguanidine hydrochloride (DGH), Dodecylamine, and any combination thereof; more preferably selected from the group consisting of N-Alkyl(C 8 -C 18 )-N,N-dimethyl-N-benzylammonium chloride, Di-n-decyl-dimethylammonium chloride (DDAC), dodecylguanidine hydrochloride (DGH) and any combination thereof.

3 . The microfibrillated cellulose composition according to claim 1 , wherein the agricultural biomass originates from crop selected from the group consisting of vegetables, fruits, grass, buckwheat, members of the Fabaceae family, and any combination thereof;
preferably selected from the group consisting of sugar beet; potato; cassava; sweet potato; parsnip; radish, carrot; ginger; ginseng; onion; tomato; cranberry; blueberry; apple; pear; citrus fruits, preferably selected from orange, lime, lemon, and grapefruit; cereals, preferably selected from maize, wheat, oats, rye, barley, sugar cane, and sorghum; buckwheat; peas; beans, preferably dry beans or soy beans; and any combination thereof; preferably selected from the group consisting of sugar beet, potato, sugar cane, carrot, cassava, sweet potato, cereals, such as maize, and any combination thereof.

4 . The microfibrillated cellulose composition according to claim 1 , wherein the biocide composition is at least a three-component biocide, and preferably the at least three biocidal components are selected from at least two different groups, more preferably the at least three biocidal components are selected from at least three different groups.

5 . The microfibrillated cellulose composition according to claim 1 , wherein the biocide composition is present in the amount 5-200 mg/kg of the microfibrillated cellulose composition, calculated on biocidal components, i.e. biocidal actives; preferably 10-180 mg/kg, preferably 13-150 mg/kg, preferably 15-120 mg/kg; preferably 20-100 mg/kg; preferably 50-80 mg/kg of the microfibrillated cellulose composition, calculated on biocidal components, i.e. biocidal actives.

6 . A method of manufacturing a microfibrillated cellulose composition according to claim 1 , comprising the steps of;
providing an agricultural biomass; optionally providing water; subjecting said biomass to refining to provide fibrillation, and provide a microfibrillated cellulose; and providing a biocide composition to said biomass before, during, and/or after the refining to provide the microfibrillated cellulose composition.

7 . The method according to claim 6 , wherein the agricultural biomass comprises at least 10 wt % of cellulose, based on dry solids content of said biomass.

8 . The method according to claim 6 , wherein the refining is achieved by using a continuous, semi-continuous, or batch refining unit; preferably the
refining unit is selected from the group consisting of a beater; a refiner; a mill; a rotor-rotor mixer; a rotor-stator mixer; and any combination thereof.

9 . The method according to claim 6 , wherein the cellulose content during refining is at least 30 wt %, preferably 50-99 wt %, based on dry solids content of the microfibrillated cellulose composition.

10 . The method according to claim 6 , wherein the refining is performed at a temperature of at least 50° C., preferably 50-80° C., preferably 55-70° C.

11 . The method according to claim 6 , wherein the biocide composition is added to said biomass before, during, and/or after the refining, to provide an amount 5-200 mg/kg of the microfibrillated cellulose composition, calculated on biocidal components, i.e. biocidal actives.

12 . A method of producing a paper or paperboard prod

Assignees

• Kemira Oyj

Inventors

• Karisalmi Kaisa
• Ekman Jaakko
• Kolari Marko
• Ikavalko Satu
• Dossman Boris

Classifications

• C08L1/02 Primary

  Cellulose; Modified cellulose · CPC title

• C08L5/06

  Pectin; Derivatives thereof · CPC title

• D21H11/18 Primary

  Highly hydrated, swollen or fibrillatable fibres · CPC title

• D21H21/18 Primary

  Reinforcing agents · CPC title

• C08L5/14

  Hemicellulose; Derivatives thereof · CPC title