# US 10,865,364 B2 · Cleaning particles and their use > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,865,364 B2 - Document ID: US10865364B2 - Status: Granted - Kind: B2 - Application number: 15/746,468 - Filed: 2016-07-28 - Published: 2018-07-26 - Granted: 2020-12-15 - Earliest claimed: 2015-07-29 - Assignees: BASF SE - Applicants: BASF SE - Inventors: Simon Kniesel; Philipp Kloke; Martina Schoemer; Shyam Sundar Sathyanarayana - Web page: https://patentgrep.com/patent/US10865364B2 ## CPC - C11D 3/3719: {Polyamides or polyimides} - C11D 1/22: derived from aromatic compounds - C11D 3/0021: {Dye-stain or dye-transfer inhibiting compositions} - C11D 17/0013: {Liquid compositions with insoluble particles in suspension (C11D17/0021, C11D17/0026, C11D17/003 take precedence)} - C11D 17/06: Powder; Flakes; Free-flowing mixtures; Sheets - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL ## Abstract This invention relates to cleaning particles, methods for their preparation, cleaning compositions and their use for laundry cleaning of soiled substrates. ## Claims ### Claim 1 Cleaning particles comprising a thermoplastic polyamide and a hydrophilic material, comprising at least one compound having at least one pendant hydrophilic group, at least part of which is located inside the cleaning particle, said cleaning particles having an average particle size of from 1 to 20 mm, wherein the hydrophilic material comprises a surfactant, a dye transfer inhibitor (DTI), a builder, or a polyether and is present in an amount of from 0.1 to 40 wt %, and wherein the cleaning particles additionally comprise 5 wt % to 75 wt % of a filler. ### Claim 2 (depends on 1) The cleaning particles according to claim 1, wherein the hydrophilic material comprises a surfactant. ### Claim 3 (depends on 1) The cleaning particles according to claim 1, wherein the hydrophilic material comprises a dye transfer inhibitor (DTI) or a builder. ### Claim 4 (depends on 3) The cleaning particles according to claim 3, wherein the dye transfer inhibitor (DTI) comprises a polymer comprising repeat units obtained by copolymerizing vinyl pyrrolidone and vinyl imidazole, or wherein the polymer comprises repeat units obtained from polymerizing one or more of the monomers selected from the group consisting of maleic acid, acrylic acid, methacrylic acid, ethacrylic acid, vinylacetic acid, allylacetic acid, itaconic acid, 2-carboxy ethyl acrylate and crotonic acid, in the form of the free acid or salt thereof. ### Claim 5 (depends on 1) The cleaning particles according to claim 1, wherein the hydrophilic material comprises a polyether block polyamide. ### Claim 6 (depends on 1) The cleaning particles according to claim 1, wherein the hydrophilic material is present in an amount of from 0.1 to 15 wt %, based on the total weight of the cleaning particle. ### Claim 7 (depends on 1) The cleaning particles according to claim 1, wherein the thermoplastic polyamide comprises an aliphatic or aromatic polyamide. ### Claim 8 (depends on 1) The cleaning particles according to claim 1, wherein the cleaning particles have an average density of 1.2 g/cm3 to 3 g/cm3 and/or wherein the cleaning particles have an average particle size of from 1 to 10 mm and/or wherein the cleaning particles are ellipsoidal, spherical, cylindrical or cuboid. ### Claim 9 (depends on 1) The cleaning particles according to claim 1, wherein the hydrophilic material is dispersed throughout the cleaning particle. ### Claim 10 (depends on 1) A method for producing thermoplastic polyamide particles according to claim 1 by extruding the ingredients and subsequently shaping. ### Claim 11 (depends on 10) The method according to claim 10, wherein the shaping is a pelletizing. ### Claim 12 A cleaning composition comprising cleaning particles comprising a thermoplastic polyamide and a hydrophilic material, at least part of which is located inside the cleaning particle, said cleaning particles having an average particle size of from 1 to 20 mm and a liquid medium, wherein the hydrophilic material comprises a surfactant, a dye transfer inhibitor (DTI), a builder, or a polyether and is present in an amount of from 0.1 to 40 wt %, and wherein the cleaning particles additionally comprise 5 wt % to 75 wt % of a filler. ### Claim 13 (depends on 2) The cleaning particles according to claim 2, wherein the surfactant is an anionic surfactant having a sulfonate and/or sulfate group. ### Claim 14 (depends on 3) The cleaning particles according to claim 3, wherein the dye transfer inhibitor comprises a polymer having vinyl pyrrolidine repeat units and the builder is a polymer comprising carboxylic acid groups or salts thereof or is a polyether. ### Claim 15 (depends on 7) The cleaning particles according to claim 7, wherein the thermoplastic polyamide comprises nylon-6, nylon-6.6, nylon-6-10, or a copolymer or blend thereof. ### Claim 16 (depends on 1) The cleaning particles of claim 1, wherein the filler comprises a particulate inorganic filler. ### Claim 17 (depends on 12) The cleaning composition of claim 12 wherein the liquid medium is aqueous. ### Claim 18 (depends on 4) The cleaning particles of claim 4 wherein the polymer comprises repeat units obtained by polymerizing one or more of the monomers selected from acrylic acid, methacrylic acid and maleic acid, in the form of the free acid or salt thereof.