Described are sealing primer compositions that can be used to reduce paint defects such as pops or vapor boil on painted plastic substrates, as well as related methods for sealing plastic substrates, and sealed plastic substrates. Sealing primer compositions of the invention include a functionalized polydiene polymer such as a hydroxylated or other functional-group-containing polybutadiene polymer.

Provided is a method for easily producing an oxidized carbon black aqueous dispersion that can highly remove multivalent metal ions and exhibit excellent dispersion stability.

A method for producing an oxidized carbon black aqueous dispersion by successively performing on an aqueous slurry of oxidized carbon black having one or more anionic functional groups on a surface thereof a neutralization step of mixing an alkali metal hydroxide and performing heating/neutralization in the presence of one or more selected from a water-soluble chelating agent and a salt thereof or after mixing an alkali metal hydroxide and performing heating/neutralization, mixing one or more selected from a water-soluble chelating agent and a salt thereof and a separation and removal step of separating and removing a multivalent metal ion chelate complex from a mixed solution obtained at the neutralization step using a separation membrane.

The present application relates to a colorant tablet comprising: a) at least one pigment; and b) at least one adjuvant. A pigment may be an organic pigment, and inorganic pigment, or combinations thereof. The pigment may be an insoluble pigment. An adjuvant may be a carbonate. The adjuvant may further comprise at least one acid. The colorant tablet may be at least partially dissolved in a solvent (including water) prior to adding to a formulation or directly into a formulation. The formulation may be a coating. A method of forming the colorant tablet is also disclosed.

Disclosed herein is a black paint composition with improved blackness by controlling a black paint and an additive.

Disclosed herein are aqueous dispersions comprising: at least one pigment present in an amount of at least 10% by weight relative to the total weight of the dispersion, the at least one pigment being selected from oxidized carbon blacks and modified carbon blacks having attached at least one organic group; and at least one organic solvent present in an amount of at least 10% by weight relative to the total weight of the dispersion, the at least one organic solvent having a Hansen hydrogen bonding parameter (.sub.H) ranging from 13 to 50 MPa.sup.0.5, and a Hansen polarity parameter (.sub.p) ranging from 5 to 13 MPa.sup.0.5, wherein the dispersion is substantially free of a surfactant. Also disclosed are methods of preparing aqueous dispersions and injet ink compositions prepared from the same.

Provided is a layered product with high jet-black. A layered product according to the present invention is a layered product (10) including at least a first layer (1) and a second layer (2) that are stacked. A value of L* in a L*a*b* color system defined by JIS Z8729 of the first layer (1) is ten or less. The second layer (2) is formed on the first layer (1) and 0.1 to 1 mass % of carbon nanotubes are contained in a material constituting the second layer (2). In the L*a*b* color system defined by JIS Z8729, when values are measured from a side of a plane of the second layer (2), a value of L* is 2.5 or less, a value of a* is 2.0 or greater and 2.0 or less, and a value of b* is 2.0 or greater and 0.5 or less.

The invention relates to block copolymer comprising i) A first block wherein at least 65 mol-% of the repeating units of the first block are repeating units of the formula (I)[CH.sub.2CH.sub.2O], ii) A second block wherein at least 90 mol-% of the repeating units of the second block are repeating units of at least one of formulae (II) or (III), wherein the groups R.sup.1, R.sup.2, and R.sup.3 independent of each occurrence are selected from hydrocarbyl groups having 1 to 40 carbon atoms, which are optionally substituted by ether or hydroxyl groups, and wherein the groups R.sup.1 and R.sup.2 are optionally linked to each other such that a nitrogen heterocyclic structure is present, iii) A third block which is different from the first block and the second block and which is more hydrophobic than the first block. ##STR00001##

A coloring composition for decoration includes a compound having at least a structure represented by Formula 1 in a molecule, a compound having at least a structure represented by Formula 2 in a molecule, and a pigment. In the formulae, R.sup.a represents a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, an alkenyl group other than a vinyl group, an aryl group, or an aralkyl group, and R.sup.b represents a halogen atom, an alkoxy group, an alkyl group, an alkenyl group, an aryl group, or an aralkyl group.

##STR00001##

Carbon black in which, when aggregates are divided into first primary aggregates having an X value of more than 1.7, second primary aggregates having an X value of 1.7 or less and a Y value of 1.2 or less, third primary aggregates having an X value of 1.7 or less, a Y value of more than 1.2, and a Z value of 2.0 or less, and fourth primary aggregates having an X value of 1.7 or less, a Y value of more than 1.2, and a Z value of more than 2.0, the number percentage of a total number of the second primary aggregates and the third primary aggregates is 23% or more:

[00001]$\begin{array}{cc}X=L/W& \left(X\right)\end{array}$$\begin{array}{cc}Y=P^2/4A& \left(Y\right)\end{array}$$\begin{array}{cc}Z=\left(LW\right)/A& \left(Z\right)\end{array}$

[in the formula, in a two-dimensional projection image of a primary aggregate under a transmission electron microscope, the Feret's diameter of the primary aggregate in the minor axis direction is W (m), the Feret's diameter in the major axis direction is L (m), the perimeter is P (m), and the projected area is A (m.sup.2)].

The present disclosure is directed to compositions having lecithin and an organic acid and related methods. The disclosed compositions may also include one or more co-surfactants such as anionic surfactants and/or non-ionic surfactants, and may be used as a dispersant.