# US 11,999,846 B2 · Polypropylene board and method for preparing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,999,846 B2 - Document ID: US11999846B2 - Status: Granted - Kind: B2 - Application number: 17/527,371 - Filed: 2021-11-16 - Published: 2022-03-10 - Granted: 2024-06-04 - Earliest claimed: 2020-11-12 - Assignees: Changzhou Bemate Home Technology Co., Ltd. - Applicants: Changzhou Bemate Home Technology Co., Ltd. - Inventors: Xiaoling Zhang; Zhiyuan Xiao; Yanhui Li - Web page: https://patentgrep.com/patent/US11999846B2 ## CPC - C08L 51/06: grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond - E04F 15/105: {of organic plastics with or without reinforcements or filling materials} - C08L 23/14: Copolymers of propene (C08L23/16 takes precedence) - E04F 15/102: {of fibrous or chipped materials, e.g. bonded with synthetic resins} - C08L 2205/02: containing two or more polymers of the same C08L -group - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) ## Abstract The disclosure relates to the manufacturing of floors, and more particularly to a polypropylene board and a method for preparing the same. The polypropylene board is prepared from 25-40 parts by weight of a modified polypropylene resin, 30-70 parts by weight of a filler, 3-10 parts by weight of a stabilizer and 1-8 parts by weight of a lubricant. A melt flow rate of the modified polypropylene resin is 2-9 g/10 min. ## Claims ### Claim 1 A polypropylene board, wherein the polypropylene board is prepared from 25-40 parts by weight of a modified polypropylene resin, 30-70 parts by weight of a filler, 3-10 parts by weight of a stabilizer and 1-8 parts by weight of a lubricant; and a melt flow rate of the modified polypropylene resin is 2-9 g/10 min; wherein the stabilizer is selected from the group consisting of acrylic acid, zinc phosphate and a combination thereof. ### Claim 2 (depends on 1) The polypropylene board of claim 1, wherein the polypropylene board is prepared from 30-36 parts by weight of the modified polypropylene resin, 30-70 parts by weight of the filler, 5-8 parts by weight of the stabilizer and 2-5 parts by weight of the lubricant; and the melt flow rate of the modified polypropylene resin is 4-7 g/10 min. ### Claim 3 (depends on 1) The polypropylene board of claim 1, wherein the modified polypropylene resin is selected from the group consisting of a polyolefin-modified polypropylene resin, an acrylic acid-grafted polypropylene resin and a combination thereof. ### Claim 4 (depends on 3) The polypropylene board of claim 3, wherein the modified polypropylene resin comprises 15-18 parts by weight of the polyolefin-modified polypropylene resin and 15-18 parts by weight of the acrylic acid-grafted polypropylene resin; and a model of the polyolefin-modified polypropylene resin is VM3588, and a model of the acrylic acid-grafted polypropylene resin is VM3980. ### Claim 5 (depends on 1) The polypropylene board of claim 1, wherein the filler is selected from the group consisting of calcium carbonate, kaolin, ferric oxide and a combination thereof; and a fineness of the filler is 400-800 mesh. ### Claim 6 (depends on 1) The polypropylene board of claim 1, wherein the stabilizer is zinc phosphate. ### Claim 7 A polypropylene board, wherein the polypropylene board is prepared from 25-40 parts by weight of a modified polypropylene resin, 30-70 parts by weight of a filler, 3-10 parts by weight of a stabilizer and 1-8 parts by weight of a lubricant; and a melt flow rate of the modified polypropylene resin is 2-9 g/10 min; wherein the lubricant is selected from the group consisting of zinc fatty acid, polyethylene wax and a combination thereof. ### Claim 8 A method for preparing a polypropylene board, comprising: subjecting a mixture of 25-40 parts by weight of a modified polypropylene resin, 30-70 parts by weight of a filler, 3-10 parts by weight of a stabilizer and 1-8 parts by weight of a lubricant to extrusion molding to prepare the polypropylene board; wherein a melt flow rate of the modified polypropylene resin is 2-9 g/10 min. ### Claim 9 (depends on 8) The method of claim 8, further comprising: before the extrusion molding, subjecting the modified polypropylene resin, the filler, the stabilizer and the lubricant to blending and kneading to obtain the mixture; wherein a kneading temperature is 70-80° C., and a kneading time is more than 60 s; and the extrusion molding is performed at 190-200° C. ### Claim 10 (depends on 9) The method of claim 9, further comprising: after the extrusion molding, subjecting a polypropylene substrate obtained from the extrusion molding to lamination, cooling and quenching; wherein the lamination is performed by laminating a polypropylene color film and a polypropylene wear-resistant layer on the polypropylene substrate to obtain the polypropylene board with the polypropylene color film, the polypropylene wear-resistant layer and the polypropylene substrate arranged successively. ### Claim 11 (depends on 10) The method of claim 10, wherein a thickness of the polypropylene board is 5-10 mm; a thickness of the polypropylene substrate is 4-8 mm; a thickness of the polypropylene color film is 0.02-0.08 mm; a thickness of the polypropylene wear-resistant layer is 0.15-0.8 mm; and a haze of the polypropylene wear-resistant layer is less than 10%, and a light transmittance of the polypropylene wear-resistant layer is more than 92%. ### Claim 12 (depends on 11) The method of claim 11, wherein the thickness of the polypropylene substrate is 4-6 mm; the thickness of the polypropylene color film is 0.06-0.08 mm; and the thickness of the polypropylene wear-resistant layer is 0.35-0.55 mm.