The present invention relates to a process for obtaining cellulose or a mixture containing at least cellulose and at least lignocellulose from at least one substrate that is at least to some extent amenable to fermentation comprising at least the steps of (1) to (3) and optionally (4), namely conversion of the substrate via addition of at least one inorganic base into an aqueous mixture with pH≥8.5 (step 1), ultrasound treatment of the aqueous mixture obtained after step (1) (step 2), separation of the aqueous mixture obtained after step (2) into a liquid aqueous phase and a disperse mixture containing, cellulose or a mixture containing at least cellulose and at least lignocellulose (step 3) and optionally purification of the disperse mixture obtained after step (3) containing cellulose or of the mixture containing at least cellulose and at least lignocellulose (step 4), where step (1) and step (2) of the process respectively are carried out at a temperature <100° C. and Where the ultrasound treatment in step (2) takes place in one or more treatment phases, where the duration of a treatment phase is in the range from 0.2 to 60 seconds and each treatment phase is carried out with a sonotrode frequency in the range from 14 to 22 kHz.

A wood polymer composite additive includes at least one maleic anhydride grafted polymer coupling agent, a second coupling agent that is at least one of a silane and siloxane, at least one peroxide crosslinking agent; and an amine compound. A wood polymer composite includes the additive, a thermoplastic polymer and cellulosic material. A wood polymer composite article is formed by extruding the composite material.

A wood polymer composite additive includes at least one maleic anhydride grafted polymer coupling agent, a second coupling agent that is at least one of a silane and siloxane, at least one peroxide crosslinking agent; and an amine compound. A wood polymer composite includes the additive, a thermoplastic polymer and cellulosic material. A wood polymer composite article is formed by extruding the composite material.

A wood polymer composite additive includes at least one maleic anhydride grafted polymer coupling agent, a second coupling agent that is at least one of a silane and siloxane, at least one peroxide crosslinking agent; and an amine compound. A wood polymer composite includes the additive, a thermoplastic polymer and cellulosic material. A wood polymer composite article is formed by extruding the composite material.

The disclosure concerns a composition for three-dimensional printing, said composition being free from polylactic acid (PLA) and includes the following components: (a) a polysaccharide comprising a cellulose derivative and/or a lignocellulosic derivative; (b) a pH regulator selected from at least one of the following: organic acids, inorganic acids, acid generating salts, bases, buffers, (c) a resin selected from melamine resin and/or phenol resin, and (d) optionally a rheology modifier selected from water and/or glycerol. The disclosure also concerns a kit of parts for producing the described composition, a method for three-dimensional printing of the described composition and articles obtainable by said method.

The disclosure concerns a composition for three-dimensional printing, said composition being free from polylactic acid (PLA) and includes the following components: (a) a polysaccharide comprising a cellulose derivative and/or a lignocellulosic derivative; (b) a pH regulator selected from at least one of the following: organic acids, inorganic acids, acid generating salts, bases, buffers, (c) a resin selected from melamine resin and/or phenol resin, and (d) optionally a rheology modifier selected from water and/or glycerol. The disclosure also concerns a kit of parts for producing the described composition, a method for three-dimensional printing of the described composition and articles obtainable by said method.

The disclosure concerns a composition for three-dimensional printing, said composition being free from polylactic acid (PLA) and includes the following components: (a) a polysaccharide comprising a cellulose derivative and/or a lignocellulosic derivative; (b) a pH regulator selected from at least one of the following: organic acids, inorganic acids, acid generating salts, bases, buffers, (c) a resin selected from melamine resin and/or phenol resin, and (d) optionally a rheology modifier selected from water and/or glycerol. The disclosure also concerns a kit of parts for producing the described composition, a method for three-dimensional printing of the described composition and articles obtainable by said method.

Composition of a composite material for containers, method of the preparation thereof and its use. The composition comprises a continuous matrix of a thermoplastic polymer having a melting point higher than 110° C. and, distributed within the matrix, non-fibrillated wood particles having a sieved size greater than 1.0 mm. The weight ratio of thermoplastic polymer to wood particles being 45:55 to 80:20. Material further contains 0.1 to 10% by weight, calculated from the total weight of the thermoplastic polymer and the wood particles, of a slate-like mineral pigment. The material is particularly suitable for containers of cosmetic products, for foodstuff and for beverages.

Composition of a composite material for containers, method of the preparation thereof and its use. The composition comprises a continuous matrix of a thermoplastic polymer having a melting point higher than 110° C. and, distributed within the matrix, non-fibrillated wood particles having a sieved size greater than 1.0 mm. The weight ratio of thermoplastic polymer to wood particles being 45:55 to 80:20. Material further contains 0.1 to 10% by weight, calculated from the total weight of the thermoplastic polymer and the wood particles, of a slate-like mineral pigment. The material is particularly suitable for containers of cosmetic products, for foodstuff and for beverages.

Composition of a composite material for containers, method of the preparation thereof and its use. The composition comprises a continuous matrix of a thermoplastic polymer having a melting point higher than 110° C. and, distributed within the matrix, non-fibrillated wood particles having a sieved size greater than 1.0 mm. The weight ratio of thermoplastic polymer to wood particles being 45:55 to 80:20. Material further contains 0.1 to 10% by weight, calculated from the total weight of the thermoplastic polymer and the wood particles, of a slate-like mineral pigment. The material is particularly suitable for containers of cosmetic products, for foodstuff and for beverages.