The present application relates to the field of black coloring of materials made from wood, such as reconstituted wood panels or paper/cardboard. The black coloring composition for wood-based materials includes a black pigment, a reactive type black dye and water. It is also possible to prepare a dry extract for some special applications.

The present application relates to the field of black coloring of materials made from wood, such as reconstituted wood panels or paper/cardboard. The black coloring composition for wood-based materials includes a black pigment, a reactive type black dye and water. It is also possible to prepare a dry extract for some special applications.

An ink includes water, a compound represented by the following Chemical formula 1, Pigment Red 269 represented by the following Chemical formula 2, and alkylene glycol alkyl ether, wherein the proportion of the compound represented by the following Chemical formula 1 in a total amount of the Pigment Red 269 is 2 or less percent by mass.

##STR00001##

An ink includes water, a compound represented by the following Chemical formula 1, Pigment Red 269 represented by the following Chemical formula 2, and alkylene glycol alkyl ether, wherein the proportion of the compound represented by the following Chemical formula 1 in a total amount of the Pigment Red 269 is 2 or less percent by mass.

##STR00001##

A superhydrophobic coating composition is provided comprising an NP component and a radical initiator (RI), wherein the NP component comprises NP particles having organic moieties bound to the surface of the NP particles. Also provided is a superhydrophobic coating composition further comprising a fluid. Also provided is a method for preparing a super-hydrophobic (SH) surface, where the method includes mixing an NP component with at least one RI and possibly with a fluid, thereby providing a coating composition, applying the coating composition onto a substrate (pre-coated or containing oxides) thereby providing a coated substrate; and applying radiation to the coated substrate, thereby providing the SH surface on which at least part of the NP component is covalently bound, directly or indirectly, to the substrate.

The invention relates to a process for preparing self-binding pigment particle suspensions, to a self-binding pigment particle suspension as well as to a paper product comprising self-binding pigment particles and to the use of the self-binding pigment particle suspension in paper applications, such as in paper coating or as filler material.

The invention relates to a process for preparing self-binding pigment particle suspensions, to a self-binding pigment particle suspension as well as to a paper product comprising self-binding pigment particles and to the use of the self-binding pigment particle suspension in paper applications, such as in paper coating or as filler material.

The present disclosure relates to weatherproof or moisture-resistant writable or printable paper or paper-containing substrates (i.e., targets), which include recyclable cellulosic targets coated with a single layer coating and an optional weatherproof coating. The targets visibly react to a projectile, resist degradation, remain legible, can be written upon when wet, and are recyclable.

The present invention provides a water-dispersible sheet with a suppressed time degradation of the tacky adhesiveness of the tacky adhesive layer, while maintaining the water dispersibility.

The time degradation of the tacky adhesiveness of the tacky adhesive layer of a water-dispersible sheet can be suppressed, while maintaining the water dispersibility of the water-dispersible sheet, by using a paper substrate of the water-dispersible sheet with a multilayer structure, wherein one of the multilayer (inner layer) which is not in contact with a tacky adhesive layer and the other layer (surface layer) which is in contact with the tacky adhesive layer comprise independently a mixed pulp of a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the weight ratio of these layers and the beating degree of the mixed pulps are set in the specific ranges. Provided is a water-dispersible sheet comprising a paper substrate comprising an inner layer and at least one surface layer, wherein a tacky adhesive layer is installed on one of the surface layer (hereinafter referred to as first surface layer), wherein the first surface layer comprises a mixed pulp 1, which comprises a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the Canadian standard freeness of the mixed pulp 1 is from 450 to 600 ml CSF, the content of the wood pulp in the mixed pulp 1 is from 50 to 95% by weight, the inner layer comprises a mixed pulp 3, which comprises a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the Canadian standard freeness of the mixed pulp 3 is from 600 to 750 ml CSF, and the content of the wood pulp in the mixed pulp 3 is from 50 to 95% by weight.

The present invention provides a water-dispersible sheet with a suppressed time degradation of the tacky adhesiveness of the tacky adhesive layer, while maintaining the water dispersibility.

The time degradation of the tacky adhesiveness of the tacky adhesive layer of a water-dispersible sheet can be suppressed, while maintaining the water dispersibility of the water-dispersible sheet, by using a paper substrate of the water-dispersible sheet with a multilayer structure, wherein one of the multilayer (inner layer) which is not in contact with a tacky adhesive layer and the other layer (surface layer) which is in contact with the tacky adhesive layer comprise independently a mixed pulp of a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the weight ratio of these layers and the beating degree of the mixed pulps are set in the specific ranges. Provided is a water-dispersible sheet comprising a paper substrate comprising an inner layer and at least one surface layer, wherein a tacky adhesive layer is installed on one of the surface layer (hereinafter referred to as first surface layer), wherein the first surface layer comprises a mixed pulp 1, which comprises a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the Canadian standard freeness of the mixed pulp 1 is from 450 to 600 ml CSF, the content of the wood pulp in the mixed pulp 1 is from 50 to 95% by weight, the inner layer comprises a mixed pulp 3, which comprises a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the Canadian standard freeness of the mixed pulp 3 is from 600 to 750 ml CSF, and the content of the wood pulp in the mixed pulp 3 is from 50 to 95% by weight.