Abstract: A precipitated carbonate polysaccharide structure which, when used as a filler, improves the structural strength of paper or board, or gypsum boards, plastics or gums, among others, as well as the stiffness level and optical properties (brightness and opacity) of the paper or board, together or separately with other fillers; carbonates, in particular. The invention further improves the setting of printing ink on the surface of the paper or board. The invention also includes the manufacturing method of the precipitated carbonate polysaccharide structure.

Abstract: A precipitated carbonate polysaccharide structure which, when used as a filler, improves the structural strength of paper or board, or gypsum boards, plastics or gums, among others, as well as the stiffness level and optical properties (brightness and opacity) of the paper or board, together or separately with other fillers; carbonates, in particular. The invention further improves the setting of printing ink on the surface of the paper or board. The invention also includes the manufacturing method of the precipitated carbonate polysaccharide structure.

Abstract: The present invention relates to a method of manufacturing paper or cardboard, wherein paper or board pulp is diluted with an aqueous composition, which is formed from colloidal-size particles of carbonate and bicarbonate, and other states of carbonate in an aqueous solution, so that the pH in the aqueous solution remains essentially at a value of 6.0-8.3 during the formation, and water is removed from the pulp by draining, pressing, and drying. The invention also relates to a method of manufacturing the aqueous composition used for this purpose.

Abstract: The present invention relates to a process for manufacturing paper or board, wherein paper or board pulp is diluted with acidic water and wherein the pH value of the pulp is raised with an alkali simultaneously with increasing the solids content of the pulp by filtration, compression and evaporation on the wire, press and drying sections, and, at the same time, filler is precipitated from the acidic water into the paper or board structure. The invention also relates to moistening of paper or board, with a dry matter content of over 40%, in acidic water, after which the pH value is raised with an alkali, and the paper or board is dried, or it is dried after the moistening without raising the pH value.

Abstract: The present invention relates to a filler or a filler mixture containing carbonate, as well as to a process for manufacturing the same by precipitating the filler directly into the pulp or, as a separate process without the presence of fibres, particularly from the wire water of the paper or board manufacture. The invention also relates to a fibre product containing this filler, such as a paper or board product, or a plastic, rubber, concrete or paint product.

Abstract: A precipitated carbonate polysaccharide structure which, when used as a filler, improves the structural strength of paper or board, or gypsum boards, plastics or gums, among others, as well as the stiffness level and optical properties (brightness and opacity) of the paper or board, together or separately with other fillers; carbonates, in particular. The invention further improves the setting of printing ink on the surface of the paper or board. The invention also includes the manufacturing method of the precipitated carbonate polysaccharide structure.

Abstract: The present invention relates to a fibre product that contains pulp fibre or wood fibre, wherein filler particles are attached between the fibres and to the fibrils, part of the particles consisting of chemically structured kaolin agglomerates or granules, and a part consisting of carbonate that is formed from a corresponding oxide or hydroxide by means of carbon dioxide. The invention also relates to a manufacturing method of such a fibre product.

Abstract: The present invention relates to a process for manufacturing paper or board, wherein paper or board pulp is diluted with acidic water and wherein the pH value of the pulp is raised with an alkali simultaneously with increasing the solids content of the pulp by filtration, compression and evaporation on the wire, press and drying sections, and, at the same time, filler is precipitated from the acidic water into the paper or board structure. The invention also relates to moistening of paper or board, with a dry matter content of over 40%, in acidic water, after which the pH value is raised with an alkali, and the paper or board is dried, or it is dried after the moistening without raising the pH value.

Abstract: The present invention relates to a method of manufacturing paper or cardboard, wherein paper or board pulp is diluted with an aqueous composition, which is formed from colloidal-size particles of carbonate and bicarbonate, and other states of carbonate in an aqueous solution, so that the pH in the aqueous solution remains essentially at a value of 6.0-8.3 during the formation, and water is removed from the pulp by draining, pressing, and drying. The invention also relates to a method of manufacturing the aqueous composition used for this purpose.

Abstract: An aqueous polysilicate composition comprising a polysilicate microgel based component in association with particles derived from colloidal polysilicate. The invention also concerns a process for preparing an aqueous polysilicate composition comprising mixing an aqueous colloidal polysilicate with an aqueous phase of a polysilicate microgel. The aqueous polysilicate composition is more effective than colloidal silica and is more stable than a conventional polysilicate microgel.

Abstract: The invention relates to an aqueous polysilicate composition comprising i) particles of polysilicate seeds, ii) polymerised silicate in intimate association with the polysilicate seeds, iii) cross linkages within the polymerised polysilicate formed from aluminium atoms, aluminium compounds or aluminium ions, iv) cross linkages within the polymerised polysilicate formed from atoms, compounds or ions of a multi-valent metal other than aluminium. Preferably the aqueous polysilicate composition further comprises component v) a water-soluble branched anionic polymer that has been formed from ethylenically unsaturated monomers. The invention also incorporates a method for preparing an aqueous polysilicate composition and also to the use of the aqueous polysilicate composition as a retention/drainage aid in a process of making paper or paperboard.

Abstract: An aqueous polysilicate composition comprising a polysilicate microgel based component in association with particles derived from colloidal polysilicate. The invention also concerns a process for preparing an aqueous polysilicate composition comprising mixing an aqueous colloidal polysilicate with an aqueous phase of a polysilicate microgel. The aqueous polysilicate composition is more effective than colloidal silica and is more stable than a conventional polysilicate microgel.

Abstract: A temperature-activated polysilicic acid is prepared by heating an acidified aqueous alkali metal silicate. The temperature-activated polysilicic acid is used in the production of paper for improvement of retention and water removal.

Abstract: A temperature-activated polysilicic acid is prepared by heating an acidified aqueous alkali metal silicate. The temperature-activated polysilicic acid is used in the production of paper for improvement of retention and water removal.

Abstract: A temperature-activated polysilicic acid is prepared by heating an acidified aqueous alkali metal silicate. The temperature-activated polysilicic acid is used in the production of paper for improvement of retention and water removal.