# US 2019/0169448 A1 · Active energy ray curable composition, stereoscopic modeling material, active energy ray curable ink, inkjet ink, composition storage container, two-dimensional or three-dimensional image forming apparatus, two-dimensional or three- dimensional image forming method, structural body, and processed product > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0169448 A1 - Document ID: US20190169448A1 - Status: Published application - Kind: A1 - Application number: 16/271,545 - Filed: 2019-02-08 - Published: 2019-06-06 - Earliest claimed: 2015-10-26 - Inventors: Tsuyoshi ASAMI; Tomohiro HIRADE - Web page: https://patentgrep.com/patent/US20190169448A1 ## CPC - C09D 11/322: Pigment inks - C09D 11/101: Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing - C08K 2003/2241: {Titanium dioxide} - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract An active energy ray curable composition is provided. The active energy ray curable composition includes a pigment including a titanium oxide, a dispersant, and a polymerizable compound. At least a part of the dispersant is adsorbed to the pigment at an adsorption rate of from 5 to 80 mg per 1 g of the pigment. ## Claims ### Claim at position 1 1-20: (canceled) ### Claim at position 2 21: A method of manufacturing an active energy ray curable composition comprising: dispersing a pigment at a first concentration into a composition comprising a dispersant and a polymerizable compound to form a first active energy ray curable pre-composition; lowering the concentration of the pigment to a second concentration by dilution to form a second active energy ray curable pre-composition and dispersing the second active energy ray curable pre-composition for form said active energy ray curable composition; wherein the pigment comprises a titanium oxide, and wherein at least a part of the dispersant is adsorbed to the pigment at an adsorption rate of from 5 to 80 mg per 1 g of the pigment. ### Claim at position 3 (depends on 21) 22: The method of claim 21, further comprising storing said the active energy ray curable composition at 70° C. for two weeks, wherein a third amount of the dispersant is adsorbed to the pigment, and the third amount ranges from 80% to 120% of the first amount. ### Claim at position 4 (depends on 21) 23: The method of claim 21, wherein the pigment has a number average primary particle diameter of from 220 to 260 nm. ### Claim at position 5 (depends on 21) 24: The method of claim 21, wherein the dispersant comprises an acrylic block copolymer having an acid value of 5 mgKOH/g or more and an amine value of 15 mgKOH/g or more. ### Claim at position 6 (depends on 21) 25: The method of claim 21, wherein the active energy ray curable composition has a volume average particle diameter of from 230 to 300 nm, and wherein 10% by volume or less of the active energy ray curable composition has a particle diameter of 170 nm or less and another 10% by volume or less of the active energy ray curable composition has a particle diameter of 380 nm or more. ### Claim at position 7 (depends on 21) 26: The method of claim 21, wherein a ratio (Dv/Dn) of a volume average particle diameter (Dv) of the active energy ray curable composition and a number average primary particle diameter (Dn) of the pigment ranges from 1 to 1.2. ### Claim at position 8 27: A method of manufacturing an active energy ray curable composition comprising: dispersing a pigment at a first concentration into a composition comprising a dispersant and a polymerizable compound to form a first active energy ray curable pre-composition; lowering the concentration of the pigment to a second concentration by dilution to form a second active energy ray curable pre-composition and dispersing the second active energy ray curable pre-composition for form said active energy ray curable composition; wherein the pigment comprises a titanium oxide, and wherein a first amount of the dispersant is adsorbed to the pigment at an adsorption rate of from 10 to 30 mg per 1 g of the pigment, a second amount of the dispersant is not adsorbed to the pigment, and the second amount ranges from 10% to 50% of the first amount. ### Claim at position 9 (depends on 27) 28: The method of claim 27, further comprising storing said the active energy ray curable composition at 70° C. for two weeks, wherein a third amount of the dispersant is adsorbed to the pigment, and the third amount ranges from 80% to 120% of the first amount. ### Claim at position 10 (depends on 27) 29: The method of claim 27, wherein the pigment has a number average primary particle diameter of from 220 to 260 nm. ### Claim at position 11 (depends on 27) 30: The method of claim 27, wherein the dispersant comprises an acrylic block copolymer having an acid value of 5 mgKOH/g or more and an amine value of 15 mgKOH/g or more. ### Claim at position 12 (depends on 27) 31: The method of claim 27, wherein the active energy ray curable composition has a volume average particle diameter of from 230 to 300 nm, and wherein 10% by volume or less of the active energy ray curable composition has a particle diameter of 170 nm or less and another 10% by volume or less of the active energy ray curable composition has a particle diameter of 380 nm or more. ### Claim at position 13 (depends on 27) 32: The method of claim 27, wherein a ratio (Dv/Dn) of a volume average particle diameter (Dv) of the active energy ray curable composition and a number average primary particle diameter (Dn) of the pigment ranges from 1 to 1.2. ### Claim at position 14 33: A method of manufacturing a pigment dispersion, comprising; dispersing a pigment at a first concentration into a composition comprising a dispersant and a polymerizable compound to form a first active energy ray curable pre-composition; lowering the concentration of the pigment to a second concentration by dilution to form a second active energy ray curable pre-composition and dispersing the second active energy ray curable pre-composition for form said active energy ray curable composition, wherein the pigment comprises an inorganic pigment. ### Claim at position 15 (depends on 33) 34: The method of claim 33, further comprising storing said the active energy ray curable composition at 70° C. for two weeks, wherein a third amount of the dispersant is adsorbed to the pigment, and the third amount ranges from 80% to 120% of the first amount. ### Claim at position 16 (depends on 33) 35: The method of claim 33, wherein the pigment has a number average primary particle diameter of from 220 to 260 nm. ### Claim at position 17 (depends on 33) 36: The method of claim 33, wherein the dispersant comprises an acrylic block copolymer having an acid value of 5 mgKOH/g or more and an amine value of 15 mgKOH/g or more. ### Claim at position 18 (depends on 33) 37: The method of claim 33, wherein the active energy ray curable composition has a volume average particle diameter of from 230 to 300 nm, and wherein 10% by volume or less of the active energy ray curable composition has a particle diameter of 170 nm or less and another 10% by volume or less of the active energy ray curable composition has a particle diameter of 380 nm or more. ### Claim at position 19 (depends on 33) 38: The method of claim 33, wherein a ratio (Dv/Dn) of a volume average particle diameter (Dv) of the active energy ray curable composition and a number average primary particle diameter (Dn) of the pigment ranges from 1 to 1.2.