The present invention relates to a composition comprising hedgehog shaped particles, at least one binder, and at least one hydrophobizing agent and/or at least one hydrophilizing agent, a method for controlling the wettability of substrate surfaces using these compositions, as well as a material comprising these compositions.

The present invention relates to a composition comprising hedgehog shaped particles, at least one binder, and at least one hydrophobizing agent and/or at least one hydrophilizing agent, a method for controlling the wettability of substrate surfaces using these compositions, as well as a material comprising these compositions.

The present invention relates to a method for preparing a wood modifier and a method for wood modification, and in particular, to a method for preparing a room temperature cured multifunctional wood modifier and a method for wood modification to solve the problems of high construction temperature, high toxicity, poor leaching-resistance and single function of existing wood modifiers. The method includes: step 1: weighing a hydrophobic polymer resin, an additive, a curing agent and a solvent, mixing and then stirring at room temperature to obtain a functional reagent A; step 2: weighing nanoparticles, a surface modifier and toluene, mixing and then stirring, cleaning with acetone, centrifuging, and drying to obtain a functional reagent B; step 3: adding a functional reagent C into the functional reagent A, evenly stirring, adding the functional reagent B, and performing ultrasonic processing to obtain the multifunctional wood modifier.

Solar thermal devices are formed from a block of wood, where the natural cell lumens of the wood form an interconnected network that transports fluid or material therein. The block of wood can be modified to increase absorption of solar radiation. Combining the solar absorption effects with the natural transport network can be used for various applications. In some embodiments, heating of the modified block of wood by insolation can be used to evaporate a fluid, for example, evaporating water for extraction, distillation, or desalination. In other embodiments, heating of the modified block of wood by insolation can be used to change transport properties of a material to allow it to be transported in the interconnected network, for example, heating crude oil to adsorb the oil within the block of wood.

Solar thermal devices are formed from a block of wood, where the natural cell lumens of the wood form an interconnected network that transports fluid or material therein. The block of wood can be modified to increase absorption of solar radiation. Combining the solar absorption effects with the natural transport network can be used for various applications. In some embodiments, heating of the modified block of wood by insolation can be used to evaporate a fluid, for example, evaporating water for extraction, distillation, or desalination. In other embodiments, heating of the modified block of wood by insolation can be used to change transport properties of a material to allow it to be transported in the interconnected network, for example, heating crude oil to adsorb the oil within the block of wood.

The invention is directed to a crosslinkable flame-retardant coating composition comprising the following components: a) a dendritic polymer having hydroxyl groups, wherein the dendritic polymer has a hydroxyl number in the range of 80 to 800, b) a polyol having at least 3 hydroxyl groups, c) an ammonium polyphosphate compound, d) a base coat polymer selected from a polycarbamate resin or a polymer bearing carboxyl groups, and e) a crosslinker for crosslinking the base coat polymer selected from a compound having two or more aldehyde groups, acetals or hemiacetals of the aldehydes, or a polycarbodiimide.

Such a cross-linkable flame-retardant coating composition improves the overall appearance of the cross-linked base coating on a substrate and also imparts improved flame-retardancy.

The invention is directed to a crosslinkable flame-retardant coating composition comprising the following components: a) a dendritic polymer having hydroxyl groups, wherein the dendritic polymer has a hydroxyl number in the range of 80 to 800, b) a polyol having at least 3 hydroxyl groups, c) an ammonium polyphosphate compound, d) a base coat polymer selected from a polycarbamate resin or a polymer bearing carboxyl groups, and e) a crosslinker for crosslinking the base coat polymer selected from a compound having two or more aldehyde groups, acetals or hemiacetals of the aldehydes, or a polycarbodiimide.

Such a cross-linkable flame-retardant coating composition improves the overall appearance of the cross-linked base coating on a substrate and also imparts improved flame-retardancy.

The present disclosure is directed to a kit of parts comprising: in one part a) a water-borne stain; and, in another part b) a water-immiscible organic solvent-borne stain, wherein said water-borne stain is essentially free of resin and further contains at least one water-miscible organic solvent. The present disclosure is further directed to a method of coloring a wooden substrate comprising the steps of: a) applying a water-borne stain to a surface of the wooden substrate, wherein the water-borne stain is essentially free of resin and comprises at least one water-miscible organic solvent; and thereafter b) applying a water-immiscible organic solvent-borne stain to said surface.

The present disclosure is directed to a kit of parts comprising: in one part a) a water-borne stain; and, in another part b) a water-immiscible organic solvent-borne stain, wherein said water-borne stain is essentially free of resin and further contains at least one water-miscible organic solvent. The present disclosure is further directed to a method of coloring a wooden substrate comprising the steps of: a) applying a water-borne stain to a surface of the wooden substrate, wherein the water-borne stain is essentially free of resin and comprises at least one water-miscible organic solvent; and thereafter b) applying a water-immiscible organic solvent-borne stain to said surface.

An aqueous dispersion of octylisothiazolinone has been found to be useful for delivering OIT to wood for protecting the wood from fungal discoloration. The OIT dispersion can be applied to the wood to develop a protective barrier of preservative relatively at or near the exterior surface of the woodpiece.