A vehicle bond filler formulation is provided that includes a part A having curable resin and a monomer reactive diluent. A part B storage-separate, cure initiator package contains a free-radical cure initiator. At least one color changing dye adapted to change color upon mixing the part A and the part B and within ±5 minutes of cure of the curable resin to a sandable condition is present in either the part A or a separate part C, a guide coat colorant, or a combination thereof. A process of for repairing a vehicle body is also provided that includes mixing a part A containing the at least one color changing dye with the part B to form an internal guide coat mixture applied to a substrate of the vehicle body in need of repair. The mixture cures causing the color changing dye to the terminal change color within ±5 minutes of cure of the curable resin to a sandable condition.

A multicolor dispersion comprising a protective composition and two or more colorant dispersions, wherein the protective composition comprises (1) an aqueous dispersion of polymer particles comprising from 89% to 99.45% by weight, based on the total dry weight of the protective composition, of polymer particles, wherein said aqueous dispersion of polymer particles further comprises from 0.33% to 2% by weight, based on the total dry weight of the polymer, of an anionic stabilizer monomer represented by the following Formula I, ##STR00001##
wherein R.sub.1 is a linkage group between R.sub.2 and a vinyl group, R.sub.2 is ethylene or propene or butylene, n is from 0 to 50, M is a counter salt of potassium, sodium, ammonium or lithium; wherein said aqueous dispersion of polymer particles further comprises from 0.33% to 5% by weight, based on the total dry weight of the polymer, of a non-reactive anionic surfactant having an ethylene oxide chain length of less than 11; and (2) from 0.5% to 10% by weight, based on the total dry weight of the protective composition, of a clay.

A multicolor dispersion comprising a protective composition and two or more colorant dispersions, wherein the protective composition comprises (1) an aqueous dispersion of polymer particles comprising from 89% to 99.45% by weight, based on the total dry weight of the protective composition, of polymer particles, wherein said aqueous dispersion of polymer particles further comprises from 0.33% to 2% by weight, based on the total dry weight of the polymer, of an anionic stabilizer monomer represented by the following Formula I, ##STR00001##
wherein R.sub.1 is a linkage group between R.sub.2 and a vinyl group, R.sub.2 is ethylene or propene or butylene, n is from 0 to 50, M is a counter salt of potassium, sodium, ammonium or lithium; wherein said aqueous dispersion of polymer particles further comprises from 0.33% to 5% by weight, based on the total dry weight of the polymer, of a non-reactive anionic surfactant having an ethylene oxide chain length of less than 11; and (2) from 0.5% to 10% by weight, based on the total dry weight of the protective composition, of a clay.

The invention described herein provides a dry graphene powder composition comprising pristine graphene flakes, wherein the pristine graphene flakes are non-covalently functionalised with polymeric amphiphilic molecules and wherein the dry graphene powder composition is capable of forming a stable homogeneous dispersion in aqueous or alcoholic media, in the absence of free dispersants or stabilizers, as well as methods for producing same, and the use thereof in graphene inks, for 2D and 3D printing, for production of flexible circuits, electrodes, electrocatalysts, for fabrication of nanocomposites and for wet-spinning of pristine graphene fibers.

Provided is a block copolymer with an acid group that, when used as a dispersant, can provide a dispersion composition having excellent dispersion stability, a dispersant containing the block copolymer, and a pigment dispersion composition using the dispersant. The block copolymer is an ABA block copolymer including an A block and a B block and has the feature that its acid value is 30 to 250 mgKOH/g and the B block contains a structural unit derived from a vinyl monomer with an acid group.

Provided is a block copolymer with an acid group that, when used as a dispersant, can provide a dispersion composition having excellent dispersion stability, a dispersant containing the block copolymer, and a pigment dispersion composition using the dispersant. The block copolymer is an ABA block copolymer including an A block and a B block and has the feature that its acid value is 30 to 250 mgKOH/g and the B block contains a structural unit derived from a vinyl monomer with an acid group.

A universal pigment preparation including a flocculation-stabilizing medium including (a1) reaction products of di- or polycarboxylic acids or hydroxycarboxylic acids with di- or polyols, and (a2) reaction products of alkylene oxides with alkoxylatable compounds, and at least one pigment. Paints, varnishes, printing inks, coating materials, floor coatings, potting compounds and filling compounds may be made using the universal pigment preparation.

Provided is a method for producing an aqueous pigment dispersion including a step of dispersing a mixture containing a pigment, an anionic group-containing organic polymer compound, a basic compound, and from 1% to 500% by mass of alkylene oxide adduct having a polyamine structure with respect to the pigment into water. The step of dispersing includes Step 1 of kneading a mixture which contains a pigment, an anionic group-containing organic polymer compound, a basic compound, and from 1% to 500% by mass of alkylene oxide adduct having a polyamine structure with respect to the pigment, and which contains no water or water equal to or less than 30% by mass with respect to a solid content thereof, and Step 2 of dispersing a kneaded material obtained in Step 1 into water.

Provided is a method for producing an aqueous pigment dispersion including a step of dispersing a mixture containing a pigment, an anionic group-containing organic polymer compound, a basic compound, and from 1% to 500% by mass of alkylene oxide adduct having a polyamine structure with respect to the pigment into water. The step of dispersing includes Step 1 of kneading a mixture which contains a pigment, an anionic group-containing organic polymer compound, a basic compound, and from 1% to 500% by mass of alkylene oxide adduct having a polyamine structure with respect to the pigment, and which contains no water or water equal to or less than 30% by mass with respect to a solid content thereof, and Step 2 of dispersing a kneaded material obtained in Step 1 into water.

The invention provides a method for producing an aqueous dispersion of titanium oxide particles which comprises: (a) first step for subjecting an aqueous slurry of titanium oxide particles to wet dispersing treatment in the presence of 15 to 250 parts by mole of acetic acid and 15 to 90 parts by mole of nitric acid each relative to 100 parts by mole of titanium oxide with a medium agitating mill or a high pressure dispersing machine to obtaining an aqueous dispersion of titanium oxide particles before washing, and (b) a second step for washing the aqueous dispersion of titanium oxide particles before washing obtained in the first step (a) to obtain an aqueous dispersion of titanium oxide particles.

The invention further provides a method for producing an alcohol dispersion of titanium oxide particles which comprises: (c) a third step for replacing the dispersion medium of the aqueous dispersion of titanium oxide particles obtained in the second step by an alcohol solvent.