The present disclosure describes tunable methods of treating cellulosic materials with a composition that provides increased hydrophobicity and/or lipophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for binding of saccharide fatty acid esters on cellulosic materials, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, lipophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.

Embodiments of the present invention relate to a method of making a paper comprising the steps of: a) providing a cationic wet strength resin comprising a polyamidoamine epihalohydrin, a condensation copolymer of epihalohydrin and amine, or combination thereof; b) providing an anionic polymer; c) co-mixing the cationic wet strength resin and the anionic polymer to provide a composition comprising polyelectrolyte complexes; d) providing an aqueous pulp slurry, draining the aqueous pulp slurry on a screen to form a wet fiber web, and drying the wet fiber web to obtain the paper, wherein said co-mixed composition is introduced to the aqueous pulp slurry or on the formed wet fiber web. Embodiments of the present invention further relates to a paper wet strength composition, its use in paper making and a paper obtainable therefrom.

Provided are tissue products containing an additive adapted to reduce skin irritation, such as a lotion, and a colorant may be manufactured with relatively low total add-on amounts of the additive without reducing effectiveness, while providing the product with a distinct aesthetic appearance. In a specific embodiment, the additive composition comprises an oil, a wax, and a colorant comprising a pigment and a wetting agent. The additive and colorant, which are preferably both hydrophobic and non-aqueous, are be added simultaneously and in the same pattern so as to provide a tissue product having a distinct aesthetic appearance that also provides a cue to the user that the product comprises a soothing additive. In certain instances an aesthetic pattern, particularly a coloured pattern, provides a visual cue to the user and reinforces the benefits of the product, enabling lower additive add-on levels without degrading the user experience.

To provide a surface sizing agent for papermaking, which has good low foamability and mechanical stability and has an excellent sizing effect. The surface sizing agent for papermaking is a surface sizing agent for papermaking, comprising a composition obtained by polymerizing unsaturated monomers in the presence of a starch, wherein the amount of the starch is 25 to 40 mass % based on the total amount of the starch and the unsaturated monomers, the unsaturated monomers comprise at least a styrenic compound and a (meth)acrylic ester compound, and the amount of the styrenic compound is 10 mass % or more and less than 30 mass %, and the amount of the (meth)acrylic ester compound is 20 to 50 mass %, based on the total amount of the starch and the unsaturated monomers.

Provided herein are additives for paper compositions comprising poly(ethylene oxide) (PEO) and polyacrylamide polymer that are capable of increasing the ash retention of the paper composition. Also provided are methods of making a paper composition using the additives of the disclosure.

Methods are provided for defoaming water used in processing of various products such as cellulose or wood-based products or in food processing which is formed by reacting a fatty acid with a compound selected from the group consisting of ammonia, sodium, potassium and combinations thereof so as to form a water soluble soap, dispersing the water soluble soap in water, and homogenizing the dispersed water soluble soap with hydrophobic oil or hydrocarbon oil to produce the emulsion. Methods for preparing an emulsion used in this process are also provided. The emulsion is advantageous in that it can improve water resistance and/or reduce the use of water resistant additives during processing of cellulose or wood-based products or food-grade products.

A process is disclosed for making paper having improved filler retention and opacity. The process includes the step of adding Additive A and Additive B to a slurry in a wet end of a paper machine wherein the slurry comprises pulp and a filler. Additive A is a wet strength agent. Additive B is an anionic polymer having a charge density from about −3000 to about −7000 ueq/g on a dry basis when measured in a buffer having a pH of about 6. Additive B also has a weight average molecular weight of from about 150,000 to about 1,000,000, Daltons.

Creping adhesives and processes for making and using same. In some embodiments, the creping adhesive can include a solvent, a modified polyvinyl alcohol, and a crosslinked resin. The crosslinked resin can include polyamidoamine backbones crosslinked by primary crosslinking moieties and propanediyl moieties, where the primary crosslinking moieties can be derived from a functionally symmetric crosslinker. In other embodiments, the crosslinked resin can include polyamidoamine backbones crosslinked by primary crosslinking moieties and secondary crosslinking moieties, where the primary crosslinking moieties can be derived from a first functionally symmetric crosslinker and the secondary crosslinking moieties can be derived from a second functionally symmetric crosslinker. In other embodiments, the crosslinked resin can include polyamidoamine backbones crosslinked by primary crosslinking moieties, where the primary crosslinking moieties can be derived from a functionally symmetric crosslinker. The modified polyvinyl alcohol can include a carboxylated, a sulfonated, a sulfated, and/or a sulfonated-carboxylated polyvinyl alcohol.

An emulsion is provided for defoaming water used in processing of various products such as cellulose or wood-based products or in food processing which is formed by reacting a fatty acid with a compound selected from the group consisting of ammonia, sodium, potassium and combinations thereof so as to form a water soluble soap, dispersing the water soluble soap in water and homogenizing the dispersed water soluble soap with hydrophobic oil or hydrocarbon oil to produce the emulsion. Methods for preparing the emulsion and using the emulsion are also provided. The emulsion is advantageous in that it can improve water resistance and/or reduce the use of water resistant additives during processing of cellulose or wood-based products or food-grade products.

Provided is a paper treatment agent with which improved touch feeling different from smoothness that has been conventionally studied is obtainable when a pressure is applied like nose blowing or the like.

A paper treatment agent of the present invention is a paper treatment agent containing (A) a polyhydric alcohol as a main component, the paper treatment agent contains (B) a sucrose fatty acid ester having an acyl group with more than 12 and less than 22 carbon atoms and an HLB of 11 or more and (C) an ionic surfactant, and it is characterized in that a mass ratio (C/B) of the component (C) to the component (B) is 0.65 to 24. According to the paper treatment agent of the present invention, when a pressure is applied to treated paper like nose blowing or the like, slick texture that is specific and distinctive smoothness which is non-conventional is obtainable.