# US 2014/0190370 A1 · Pigment dispersions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190370 A1 - Document ID: US20140190370A1 - Status: Published application - Kind: A1 - Application number: 14/112,470 - Filed: 2012-04-19 - Published: 2014-07-10 - Earliest claimed: 2011-04-19 - Inventors: Farshid Saboori - Web page: https://patentgrep.com/patent/US20140190370A1 ## CPC - C09C 3/08: Treatment with low-molecular-weight {non-polymer} organic compounds {(C09C3/006, C09C3/048 take precedence)} - C09C 1/32: Ultramarine - C09C 1/56: Treatment of carbon black {; Purification} - C09D 5/04: Thixotropic paints - C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer - C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS} - 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) - C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS ## Abstract This invention relates to compositions that are dispersions of pigments in the form of premixes that may be used to colour a variety of products such as plastics materials, inks and surface coatings and more particularly to compositions that are thixotropic. It also relates to premixes based on water soluble pigments that display Newtonian rheology. The compositions utilise water insoluble pigments having particle sizes that are less then about 10 microns. Both the thixotropic compositions and the Newtonian compositions include water soluble polyols and water. The pH of the premix may be adjusted to be in the range of 4-9 utilising acid or alkali as appropriate. ## Claims ### Claim 1 A thixotropic premix composition comprising a tinctorially effective amount of one or more water insoluble pigments having a particle size of less than about 10 microns, one or more water soluble polyols and water, and optionally, one or more water soluble alcohols, an antifoam, soya lecithin, one or more preservatives, and sufficient acid or alkali so that the premix has a pH in the range of from 4 to 9. ### Claim 2 A coloured product which includes a tinctorially effective amount of a thixotropic premix composition which comprises one or more water insoluble pigments having a particle size of less than about 10 microns, one or more water soluble polyols and water, and optionally, one or more water soluble alcohols, an antifoam, soya lecithin, one or more preservatives and sufficient acid or alkali so that the premix has a pH in the range of from 4 to 9. ### Claim 3 A Newtonian premix composition comprising a tinctorially effective amount of one or more water soluble pigments, one or more water soluble polyols and water, and optionally, one or more water soluble alcohols, an antifoam, soya lecithin, one or more preservatives and sufficient acid or alkali so that the premix has a pH in the range of from 4 to 9. ### Claim 4 A coloured product which includes a tinctorially effective amount of a Newtonian premix composition which comprises one or more water soluble pigments, one or more water soluble polyols and water, and optionally, one or more water soluble alcohols, an antifoam and soya lecithin, one or more preservatives and sufficient acid or alkali so that the premix has a pH in the range of from 4 to 9. ### Claim 5 (depends on 1) A thixotropic premix composition according to claim 1 wherein the amount of water insoluble pigment included in the premix is in the range of 16 to 20 gram for 4 to 6 gram of water soluble polyol and 50 gram water. ### Claim 6 (depends on 5) A thixotropic premix composition according to claim 5 wherein the water soluble polyols are selected from the group consisting of glycerol, propylene glycol and ethylene glycol and mixtures thereof. ### Claim 7 (depends on 6) A thixotropic premix composition according to claim 6 wherein the water soluble polyols comprise glycerol and propylene glycol in about equal amounts. ### Claim 8 (depends on 7) A thixotropic premix composition according to claim 7 including ethanol or isopropanol. ### Claim 9 (depends on 8) A thixotropic premix composition according to claim 8 wherein the amount of ethanol or isopropanol is about 0.5 to 1 gram. ### Claim 10 (depends on 5, 6, 7, 8, 9) A thixotropic premix composition according to any one of claims 5 to 9 wherein the alkali is ammonia. ### Claim 11 (depends on 10) A thixotropic premix composition according to claim 10 wherein the ammonia is in an amount of about 0.5 gram for 16 to 20 gram of water insoluble pigment. ### Claim 12 (depends on 1) A thixotropic premix composition according to claim 1 including one or more preservatives in an amount up to and including 4 gram for 16-20 gram of water insoluble pigment. ### Claim 13 (depends on 1) A thixotropic premix composition according to claim 1 including soya lecithin in an amount up to and including 4 gram for 16-20 gram of water insoluble pigment. ### Claim 14 (depends on 1) A thixotropic premix composition according to claim 1 including an antifoam in an amount up to and including 4 gram for 16-20 gram of water insoluble pigment. ### Claim 15 (depends on 3) A Newtonian premix composition according to claim 3 wherein the amount of water soluble pigment included in the premix is in the range of 16-40 gram for 0.8 to 8 gram of water soluble polyol and 50 gram water.