Abstract: There is provided an aqueous dispersion comprising 40-90 wt-% ethyl cellulose and 10-50 wt-% at least one plasticizer, and to a film having water barrier property produced from the dispersion. Additionally, there is provided a fiber based substrate comprising at least one film layer produced from the aqueous dispersion.

Abstract: The invention relates to an aqueous slurry for manufacture of a coating composition for paper, board or the like, which comprises inorganic mineral particles and a dispersion agent, which is an anionic lignin-carbohydrate complex where lignin and carbohydrate are covalently bound with each other.

Abstract: The invention relates to an aqueous emulsion of a hydrophobic anhydride-based sizing agent, prepared by homogenizing the said anhydride-based sizing agent in an aqueous phase which comprises a stabilizer, which is an anionic lignin-carbohydrate complex, where lignin and carbohydrate are covalently bound with each other. The invention further relates to a use of this anionic lignin-carbohydrate complex as a stabilizer as well as to a method for making an aqueous emulsion of a hydrophobic anhydride-based sizing agent.

Abstract: The present invention relates to a coating structure for a sheet-like substrate comprising cellulosic fibres. The coating structure comprises at least a first coating layer and a second coating layer, where the second coating layer is arranged in a direct contact with the first coating layer. At least the first coating layer or the second coating layer is a barrier coating layer comprising at least one water-soluble cellulose derivative selected from alkyl celluloses, hydroxyalkyl alkyl celluloses, hydroxyalkyl celluloses and any of their mixtures, and a plasticizer.

Abstract: A method for preparation of a starch-promoted alkyl ketene dimer (AKD) sizing emulsion is provided. The inventive method comprises adding a sizing promoter comprising high-charge cationic starch and polyaluminum chloride (PAC) to a stabilized AKD emulsion and further wherein addition of said sizing promoter comprising high-charge cationic starch and PAC is effected at ambient temperature, after emulsification, stabilization, and homogenization of said stabilized AKD emulsion; and prior to addition of the starch-promoted AKD sizing emulsion to papermaking furnish, pulp, or fiber stock.

Abstract: The invention relates to a method for producing cationized cellulose. The method comprises at least preparing a slurry of a cellulosic starting material in an alkaline liquid medium which comprises an organic liquid and performing mercerization of the slurry. The concentration of the cellulosic starting material in the slurry is at least 20 weight-%, calculated as dry from total weight of the liquid medium and the cellulosic starting material. A cationizing agent is added to the slurry after the mercerization step at a cationization temperature, which is less than the boiling point of the alkaline liquid medium, and the cellulose in the slurry is allowed to react with the cationizing agent, preferably under inert atmosphere and a cationized cellulose product is obtained.

Abstract: The present invention relates to a stable formulation comprising at least one organic solvent selected from a group consisting of aliphatic esters and cyclic esters, and a compound of Formula (I).

Abstract: The present invention relates to a process for the preparation of arylsulfonylpro-penenitriles. The reaction starting from arylsulfonyl halides is catalyzed by a cat-alyst compound comprising a transition metal. The process is scalable, environ-mentally benign and provides the product in good yield.

Abstract: A process for a preparation of arylsulfonylpropenenitriles is disclosed. A reaction starting from arylsulfonyl iodides is catalyzed by light. The process is scalable, environmentally benign and provides the product in good yield.

Abstract: According to an example aspect of the present invention, there is provided a method of producing films from nanocellulose based raw materials having high consistency and thereby providing low energy consuming and feasible manufacturing process of CNF films and film materials.

Abstract: A process for a preparation of arylsulfonylpropenenitriles is disclosed. A reaction starting from arylsulfonyl iodides is catalyzed by light. The process is scalable, environmentally benign and provides the product in good yield.

Abstract: According to an example aspect of the present invention, there is provided a method of producing films from nanocellulose based raw materials having high consistency and thereby providing low energy consuming and feasible manufacturing process of CNF films and film materials.

Abstract: The present invention relates to a process for producing a fibrillated cellulose material. In the invention fibrillated cellulose is produced enzymatically by using a low energy demanding mechanical mixer such as plough share mixer, to enhance the fibrillation. Enzymes and process conditions are chosen so that the cellulose degradation is as low as possible, while obtaining a high yield of nanofibrils. Sugars that are produced into the end-product may also be furthermore exploited.

Abstract: The present invention relates to a process for producing a fibrillated cellulose material. In the invention fibrillated cellulose is produced enzymatically by using a low energy demanding mechanical mixer such as plough share mixer, to enhance the fibrillation. Enzymes and process conditions are chosen so that the cellulose degradation is as low as possible, while obtaining a high yield of nanofibrils. Sugars that are produced into the end-product may also be furthermore exploited.

Abstract: The invention relates to a method of producing oxidized or microfibrillated cellulose (MFC). According to the invention there is provided an aqueous pulp suspension with a consistency of at least 15%, and at least one oxidant is added to the suspension to oxidize cellulosic hydroxyl groups in the suspension under mechanical mixing or shearing. The oxidized suspension, washed and diluted to a lower consistency, is subjected to homogenization to yield gel-like MFC. Alkali hypochlorite may be used as oxidant, and preferred mediating oxidation catalysts are AZADO and TEMPO. Alkali bromide may be used as a cocatalyst. The MFC product, which as a suspension has an increased viscosity, is suitable as a means of regulating viscosity or for production of films and composites.

Abstract: The invention relates to a method for manufacturing nanostructured paper or board and a novel paper or board. The method comprises providing a liquid suspension of nanocellulose-containing material, forming a web from the suspension, and drying the web in order to form paper or board. According to the invention the water content of the suspension from which the web is formed is 50% or less by weight of liquids. By means of the invention, energy consumption of paper manufacturing can be significantly reduced.

Abstract: A moldable fibrous product, includes foam-formed fibrous material selected from fibrous webs, paper webs, board webs, or sheets cut from any of the webs, at least one polymer selected from carbohydrate derivatives, polylactic acid, polyurethane and polyolefins impregnated in the web, and from 0.001 to 0.1% by weight of at least one foaming agent.

Abstract: The invention relates to a method of treating chemical pulp fibers by a polymerizing hydroxy acid, the fibers thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibers in the presence of a catalyst, forming ester bonds. The following units of the same hydroxy acid are oligomerized and/or polymerized to these grafted acid residues. The fibers thus treated and the products refined thereof endure better processing stages that include drawing and stretching than untreated fibers.

Abstract: A solution of a polysaccharide material, a method of producing such solutions and uses thereof. The solution is formed by the polysaccharide in a solvent which comprises an efficient amount of an active compound selected from the group of diketo compounds, such as glyoxylic acid and salts and derivatives thereof, capable of reacting with the polysaccharide. The solution thus produced can be used as a viscous dope, and for the production of fibers, films and surface coatings and for gluing.

Abstract: The invention relates to a method for manufacturing nanostructured paper or board and a novel paper or board. The method comprises providing a liquid suspension of nanocellulose-containing material, forming a web from the suspension, and drying the web in order to form paper or board. According to the invention the water content of the suspension from which the web is formed is 50% or less by weight of liquids. By means of the invention, energy consumption of paper manufacturing can be significantly reduced.