An aqueous coating composition capable of providing coating films with balanced properties of low gloss and high clarity.

A wood treatment method for reducing fungal growth utilizes a treatment solution comprising an aldehyde, a carrier solvent, an organic co-solvent, at least one surfactant, and at least one acid, base, or salt. In embodiments, the carrier solvent may comprise water and the organic co-solvent may comprise an alcohol or acetone. The aldehyde is impregnated into the wood, where it reacts with thiamine and other amino acids to promote cross-linking, reducing the porosity of the wood and thereby reducing the ability of various microbes and fungi to access the interior of the wood as a nutrient source.

The present invention discloses a one-step integrally-formed bamboo sleeper. For the one-step integrally-formed bamboo sleeper, a bamboo unit is used as a raw material, to be dried and modified at the temperature of 110-180° C., and then subject to adhesive dipping, adhesive throwing, solidification, dopamine solution treatment, anti-mildew and/or anti-corrosion and/or anti-insect treatment, and fastening, to obtain the one-step integrally-formed bamboo sleeper with a density of 0.9-1.5 g/cm.sup.3. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention has a suitable elastic modulus, and applicable for ballasted tracks of railways and urban rail transit systems.

The present invention discloses a one-step integrally-formed bamboo sleeper. For the one-step integrally-formed bamboo sleeper, a bamboo unit is used as a raw material, to be dried and modified at the temperature of 110-180° C., and then subject to adhesive dipping, adhesive throwing, solidification, dopamine solution treatment, anti-mildew and/or anti-corrosion and/or anti-insect treatment, and fastening, to obtain the one-step integrally-formed bamboo sleeper with a density of 0.9-1.5 g/cm.sup.3. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention has a suitable elastic modulus, and applicable for ballasted tracks of railways and urban rail transit systems.

The present invention relates to a method of producing a wood and textile fibre protection composition from tall oil pitch. The present invention also relates to a wood and textile fibre protection composition comprising tall oil pitch and use of the composition as a wood and textile fibre protection agent.

The present invention relates to a method of producing a wood and textile fibre protection composition from tall oil pitch. The present invention also relates to a wood and textile fibre protection composition comprising tall oil pitch and use of the composition as a wood and textile fibre protection agent.

A process for treating lignocellulosic pieces with a water-soluble lignocellulosic material preservative. The process comprises the step of contacting the lignocellulosic pieces with a water-based preservative solution having a contact temperature between about 70 C. and about 95 C., the water-based preservative solution containing the water-soluble lignocellulosic material preservative in a concentration above about 25% wt. A lignocellulosic treatment apparatus for treating lignocellulosic pieces is also provided.

A process for treating lignocellulosic pieces with a water-soluble lignocellulosic material preservative. The process comprises the step of contacting the lignocellulosic pieces with a water-based preservative solution having a contact temperature between about 70 C. and about 95 C., the water-based preservative solution containing the water-soluble lignocellulosic material preservative in a concentration above about 25% wt. A lignocellulosic treatment apparatus for treating lignocellulosic pieces is also provided.

An aqueous coating composition includes, based on the total weight of the aqueous coating composition, (a) an aqueous polymer dispersion present in an amount of from 15% to 33% by solids weight, wherein the polymer includes at least 95% by solids weight of an acrylic emulsion copolymer based on the solids weight of the polymer; (b) anionic colloidal silica present in an amount of from 1% to 13% by solids weight; (c) a solvent present in an amount of from 0.5% to 9% by weight, wherein the solvent has at least one hydroxyl group and a dielectric constant at 25 C. of from 7 to 10.3; (d) a monoamine compound present in an amount of from 0.2% to 1.5% by weight, wherein the monoamine compound is selected from an alkyl monoamine, a beta-hydroxyl monoamine containing up to 2 hydroxyl groups, or mixtures thereof; and (e) water.

An aqueous coating composition includes, based on the total weight of the aqueous coating composition, (a) an aqueous polymer dispersion present in an amount of from 15% to 33% by solids weight, wherein the polymer includes at least 95% by solids weight of an acrylic emulsion copolymer based on the solids weight of the polymer; (b) anionic colloidal silica present in an amount of from 1% to 13% by solids weight; (c) a solvent present in an amount of from 0.5% to 9% by weight, wherein the solvent has at least one hydroxyl group and a dielectric constant at 25 C. of from 7 to 10.3; (d) a monoamine compound present in an amount of from 0.2% to 1.5% by weight, wherein the monoamine compound is selected from an alkyl monoamine, a beta-hydroxyl monoamine containing up to 2 hydroxyl groups, or mixtures thereof; and (e) water.