The present invention relates to a method for manufacturing a paper having improved impermeability to grease and oil, comprising the following steps: (a) providing a paper with a first surface and a second surface; (b) applying an aqueous solution to the first surface, wherein the aqueous solution comprises from approximately 10 to approximately 50 weight % of collagen hydrolysate and at least approximately 0.1 weight % of a plasticizer; (c) drying the aqueous solution in order to obtain a coating comprising collagen hydrolysate and plasticizer on the first surface.

The present invention relates to a method for manufacturing a paper having improved impermeability to grease and oil, comprising the following steps: (a) providing a paper with a first surface and a second surface; (b) applying an aqueous solution to the first surface, wherein the aqueous solution comprises from approximately 10 to approximately 50 weight % of collagen hydrolysate and at least approximately 0.1 weight % of a plasticizer; (c) drying the aqueous solution in order to obtain a coating comprising collagen hydrolysate and plasticizer on the first surface.

The present invention is directed to a marine biodegradable and recyclable multi-layer metallized paper-based packaging material comprising a layered arrangement of superimposed organic and inorganic materials for providing barrier to oxygen and moisture: the organic and inorganic layers are made of materials which are selected for their marine biodegradable properties. In one embodiment of the present invention the multi-layer metallized paper-based packaging material can be recycled with other paper packaging materials.

A printing paper comprising at least one ink receiving topcoat, wherein the ink receiving topcoat comprises a pigment composition and a binder composition, the binder composition comprising a mixture of at least one starch, and one or both of at least one protein and at least one water-soluble polymer, characterized in that the binder composition comprises the at least one protein in an amount of at least 5 weight percent, when present, and comprises the at least one water-soluble polymer in an amount of at least 2.5 weight percent, when present, based on the weight of the binder composition.

A printing paper comprising at least one ink receiving topcoat, wherein the ink receiving topcoat comprises a pigment composition and a binder composition, the binder composition comprising a mixture of at least one starch, and one or both of at least one protein and at least one water-soluble polymer, characterized in that the binder composition comprises the at least one protein in an amount of at least 5 weight percent, when present, and comprises the at least one water-soluble polymer in an amount of at least 2.5 weight percent, when present, based on the weight of the binder composition.

Methods of making films with feedstock comprising biomass. The methods include treating a feedstock comprising biomass with an acidic aqueous solution to yield a solid phase and a liquor, generating a forming fluid with the liquor, and generating a film from the forming fluid. Some versions include comminuting the solid phase to generate a comminuted solid phase and including the comminuted solid phase in the forming fluid. The biomass preferably contains relatively high amounts of pectin and protein. The films can be in the form of standalone films or coatings on substrates such as paper. The films provide oil and grease resistance and air impermeability, among other advantages.

Methods of making films with feedstock comprising biomass. The methods include treating a feedstock comprising biomass with an acidic aqueous solution to yield a solid phase and a liquor, generating a forming fluid with the liquor, and generating a film from the forming fluid. Some versions include comminuting the solid phase to generate a comminuted solid phase and including the comminuted solid phase in the forming fluid. The biomass preferably contains relatively high amounts of pectin and protein. The films can be in the form of standalone films or coatings on substrates such as paper. The films provide oil and grease resistance and air impermeability, among other advantages.