Described herein are coatings which impart oil, grease, and water resistance to various materials, such as paper, paperboard and polymeric materials. Such coatings may be applied as barrier coatings to the substrate materials in order to inhibit and prevent the transmission of oil, grease and water; that is, to prevent oil, water grease from passing into and/or through the substrate material. The coatings include an acrylic-based polymer latex, a styrene-butadiene rubber latex, a styrene-acrylic resin solution, a large particle size wax, and optionally, a small particle size wax. Also disclosed herein is a process of preparing the coatings. Also disclosed are products to which the coatings have been applied in order to impart oil, grease and/or water resistance, and processes for preparing such products.

The invention relates to a method for modifying nanofibrillar cellulose composition, comprising—preparing fibrous dispersion of ionically charged nanofibrillar cellulose (NFC), and—applying heat treatment at a temperature of at least 90° C. to the fibrous dispersion until the viscosity of NFC starts to decrease. The viscosity of the heat-treated NFC is reversible by applying shear forces to the NFC.

The invention relates to a method for modifying nanofibrillar cellulose composition, comprising—preparing fibrous dispersion of ionically charged nanofibrillar cellulose (NFC), and—applying heat treatment at a temperature of at least 90° C. to the fibrous dispersion until the viscosity of NFC starts to decrease. The viscosity of the heat-treated NFC is reversible by applying shear forces to the NFC.

A method of manufacturing a paper or paperboard with improved printing properties, which method comprises the steps of, providing a paper or paperboard substrate, comprising cellulosic fibres, providing a coating composition comprising a mixture of an esterified or etherified starch and a inorganic mineral; and coating at least one surface of said substrate with at least one layer of said coating composition.

The disclosure relates to a coating composition that can be applied to a substrate, especially a cellulose substrate. A layer of the coating composition applied to the substrate provides an excellent ink receptive layer and can be used as a coating on paper. The disclosure also relates to aqueous compositions and method for applying the layer of the coating composition onto the substrate.

A fiber body forming method includes a step of preparing a web which contains fibers and which has a bulk density of 0.09 g/cm.sup.3 or more; and a step of applying a liquid containing a binder which binds the fibers together to the web.

Methods of treating materials, such as cellulose-based materials, to provide barrier properties like water resistance and lipid resistance (OGR), separately or in combination, and particularly at high temperatures, by using bio-based coatings and/or compositions containing a water insoluble, high melting point saccharide fatty acid ester and products obtained by the methods.

The present invention relates to a process for preparing an aqueous suspension comprising a ground calcium carbonate-comprising material, the use of a homopolymer or a copolymer in such a process for preparing an aqueous suspension comprising a ground calcium carbonate-comprising material, an aqueous suspension comprising a ground calcium carbonate-comprising material obtained by the process, and the use of an aqueous suspension comprising a ground calcium carbonate-comprising material in paper applications such as paper filling and paper coating applications, in coating applications, in paints, in adhesives, in sealants, in concrete, in agriculture applications, in food applications, in cosmetic applications, or in pharmaceutical applications.

The present invention relates to a polyhydroxyalkanoate (PHA) composition having improved stability and water resistance, and a preparation method therefor. According to the present invention, the aggregation of water-dispersed PHA particles can be prevented, and re-dispersion is induced so that precipitation can be prevented, and thus the dispersion stability and water resistance of PHA can be improved. In addition, the composition of the present invention minimizes the use of additives to enable recycling of biodegradable PHA, and has excellent compatibility with conventional commercial products and excellent room-temperature stability. Additionally, since overuse of a surfactant and an additional step of forming an emulsion are not required in the preparation of PHA, economic feasibility can be improved.

The present invention relates to a polyhydroxyalkanoate (PHA) composition having improved stability and water resistance, and a preparation method therefor. According to the present invention, the aggregation of water-dispersed PHA particles can be prevented, and re-dispersion is induced so that precipitation can be prevented, and thus the dispersion stability and water resistance of PHA can be improved. In addition, the composition of the present invention minimizes the use of additives to enable recycling of biodegradable PHA, and has excellent compatibility with conventional commercial products and excellent room-temperature stability. Additionally, since overuse of a surfactant and an additional step of forming an emulsion are not required in the preparation of PHA, economic feasibility can be improved.