The invention provides a method for the production of a composite comprising microfibrillated cellulose (MFC) and precipitated calcium carbonate. The method is characterized in that MFC is added to a suspension of calcium hydroxide during carbonation, whereby calcium carbonate is precipitated onto fibers or fibrils of the MFC in a controlled manner. By adding microfibrillated cellulose to the calcium suspension during the carbonation, the brightness and the strength of the MFC/PCC-composite is enhanced. Moreover, the inventive method facilitates the distribution of calcium dioxide and MFC in the suspension and thus gives rise to a more homogenous product.

A method of dosing a nanocellulose suspension in gel phase into a second suspension, wherein the method comprises the steps of: providing said nanocellulose suspension in gel phase; providing said second suspension; bringing said nanocellulose suspension in gel phase in contact with said second suspension; wherein the method comprises a step of subjecting said nanocellulose suspension in gel phase to a shear rate of more than 500 l/s, simultaneously with and/or immediately prior to the step of bringing said nanocellulose suspension in gel phase and said second suspension in contact with each other.

A method of dosing a nanocellulose suspension in gel phase into a second suspension, wherein the method comprises the steps of: providing said nanocellulose suspension in gel phase; providing said second suspension; bringing said nanocellulose suspension in gel phase in contact with said second suspension; wherein the method comprises a step of subjecting said nanocellulose suspension in gel phase to a shear rate of more than 500 l/s, simultaneously with and/or immediately prior to the step of bringing said nanocellulose suspension in gel phase and said second suspension in contact with each other.

A 1-ply toilet paper includes a leaf bleached kraft pulp and a needle bleached kraft pulp, as constituting fibers, mass % of the needle bleached kraft pulp being 15 to 55 mass %; 0.024 to 0.075 mass %, with respect to a mass of the pulps, of a fatty acid ester series compound; and 0.015 to 0.075 mass %, with respect to the mass of the pulps, of a fatty acid amide series compound, wherein a basis weight is 21.0 to 22.5 g/m.sup.2, wherein a paper thickness is 110 to 155 m, wherein a degree of elongation is 14 to 25%, wherein an MMD is less than 9.3, wherein dry tensile strength in a longitudinal direction is 245 to 330 cN/25 mm, and wherein dry tensile strength in a lateral direction is 85 to 135 cN/25 mm.

A method of manufacturing a toilet paper includes: adding, to a paper material including a leaf bleached kraft pulp and a needle bleached kraft pulp whose mass % is 15 to 55 mass %, as fiber materials, 0.08 to 0.15 mass %, with respect to a mass of the pulps, of a fatty acid ester series compound whose particle size is less than or equal to 0.1 m, and 0.05 to 0.15 mass %, with respect to the mass of the pulps, of a fatty acid amide series compound whose particle size is 0.5 to 5 m in this order, to make a paper of a paper material in which the fatty acid ester series compound and the fatty acid amide series compound are added.

An acrylamide-based polymer which contains one or more multiquaternized (multiquat) monomer unit(s) is provided. The acrylamide-based polymer can be used in a papermaking process to reduce pitch and stickies deposition, improve retention and drainage, and enhance dry strength properties of paper. Also included is a method of controlling pitch and stickies deposition in papermaking comprising treating pulp slurry with an acrylamide-based polymer which contains one or more multiquaternized (multiquat) monomer unit(s).

An acrylamide-based polymer which contains one or more multiquaternized (multiquat) monomer unit(s) is provided. The acrylamide-based polymer can be used in a papermaking process to reduce pitch and stickies deposition, improve retention and drainage, and enhance dry strength properties of paper. Also included is a method of controlling pitch and stickies deposition in papermaking comprising treating pulp slurry with an acrylamide-based polymer which contains one or more multiquaternized (multiquat) monomer unit(s).

A method for obtaining dimethylaminoethyl (meth)acrylate comprising reacting a (meth)acrylic ester with dimethylaminoethanol that-is at least partially renewable and non-fossil. A bio-sourced dimethylaminoethyl (meth)acrylate has a bio-sourced carbon content ranging between 45 wt % and 100 wt % relative to the total carbon weight in the bio-sourced dimethylaminoethyl (meth)acrylate. The bio-sourced carbon content can be measured according to ASTM D6866-21 Method B.

A method for obtaining dimethylaminoethyl (meth)acrylate comprising reacting a (meth)acrylic ester with dimethylaminoethanol that-is at least partially renewable and non-fossil. A bio-sourced dimethylaminoethyl (meth)acrylate has a bio-sourced carbon content ranging between 45 wt % and 100 wt % relative to the total carbon weight in the bio-sourced dimethylaminoethyl (meth)acrylate. The bio-sourced carbon content can be measured according to ASTM D6866-21 Method B.

The invention provides a method for the production of a composite comprising microfibrillated cellulose (MFC) and precipitated calcium carbonate. The method is characterized in that MFC is added to a suspension of calcium hydroxide during carbonation, whereby calcium carbonate is precipitated onto fibers or fibrils of the MFC in a controlled manner. By adding microfibrillated cellulose to the calcium suspension during the carbonation, the brightness and the strength of the MFC/PCC-composite is enhanced. Moreover, the inventive method facilitates the distribution of calcium dioxide and MFC in the suspension and thus gives rise to a more homogenous product.