# US 8,772,402 B2 · Paint to be sprayed on the surface of a slim tube-shaped bamboo product and a spraying method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,772,402 B2 - Document ID: US8772402B2 - Status: Granted - Kind: B2 - Application number: 12/582,592 - Filed: 2009-10-20 - Published: 2010-04-29 - Granted: 2014-07-08 - Earliest claimed: 2008-10-23 - Assignees: Beifa Group Co., Ltd. - Applicants: Ronghua Luo - Inventors: Ronghua Luo - Web page: https://patentgrep.com/patent/US8772402B2 ## CPC - B05D 1/02: performed by spraying - B05D 1/002: {the substrate being rotated} - B05D 7/06: to wood - B05D 2601/20: used for non-pigmentation effect - Y10T 428/1348: Cellular material derived from plant or animal source [e.g., wood, cotton, wool, leather, etc.] - Y10T 428/31895: Paper or wood - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A paint for spraying on bamboo products, such as on the exterior surface of a slim tube-shaped bamboo product, is a nonaqueous acrylic-based paint including 10 to 15 percent by weight of one or more flatting powders, 50 to 55 percent by weight of one or more acrylic resins, 1 to 5 percent by weight of one or more leveling agents, 13 to 16 percent by weight of one or more ester solvents, 10 to 15 percent by weight of one or more alcohol solvents, and 8 to 10 percent by weight of one or more ether solvents. After application of the wet paint composition, the solvents evaporate leaving a film of the acrylic resins, flatting powders, and leveling agents. ## Claims ### Claim 1 A paint composition, comprising: 10 to 15 percent by weight of one or more flatting powders wherein the amount is effective to fill pores in a substrate on which the paint composition is applied; 50 to 55 percent by weight of one or more acrylic resins; 1 to 5 percent by weight of one or more leveling agents; 13 to 16 percent by weight of ethyl acetate; 10 to 15 percent by weight of isopropanol; and 8 to 10 percent by weight of butyl ether, wherein the percents by weight are based on the total weight of a wet composition. ### Claim 2 (depends on 1) The method of claim 1, wherein the viscosity of the paint is approximately 20 cps. ### Claim 3 (depends on 1) The paint composition of claim 1, wherein the paint is a nonaqueous paint. ### Claim 4 (depends on 1) The paint composition of claim 1, wherein the paint is a transparent paint. ### Claim 5 (depends on 1) The paint composition of claim 1, comprising: about 10 percent by weight of flatting powder; about 50 percent by weight of acrylic resin; about 15 percent by weight of ethyl acetate; about 14 percent by weight of isopropanol; about 1 percent by weight of leveling agent; and about 10 percent by weight of butyl ether, wherein the percents by weight are based on the total weight of a wet composition. ### Claim 6 (depends on 1) The paint composition of claim 1, comprising: about 12 percent by weight of flatting powder; about 53 percent by weight of acrylic resin; about 14 percent by weight of ethyl acetate; about 12 percent by weight of isopropanol; about 1 percent by weight of leveling agent; and about 8 percent by weight of butyl ether, wherein the percents by weight are based on the total weight of a wet composition. ### Claim 7 (depends on 1) The paint composition of claim 1, comprising: about 13 percent by weight of flatting powder; about 50 percent by weight of acrylic resin; about 13 percent by weight of ethyl acetate; about 14 percent by weight of isopropanol; about 2 percent by weight of leveling agent; and about 8 percent by weight of butyl ether, wherein the percents by weight are based on the total weight of a wet composition. ### Claim 8 (depends on 1) The paint composition of claim 1, comprising: about 10 percent by weight of flatting powder; about 50 percent by weight of acrylic resin; about 15 percent by weight of ethyl acetate; about 14 percent by weight of isopropanol; about 1 percent by weight of leveling agent; and about 10 percent by weight of butyl ether, wherein the percents by weight are based on the total weight of a wet composition. ### Claim 9 (depends on 1) A bamboo product comprising a dried film formed on the surface of the bamboo product from applying the paint composition of claim 1. ### Claim 10 (depends on 9) The bamboo product of claim 9, wherein the product is a slim tube-shaped product. ### Claim 11 (depends on 1) A method for painting a bamboo product, comprising: removing flock from the surface of the bamboo product to produce a smooth bamboo surface; preparing a paint composition according to claim 1; applying the paint composition on the surface of the bamboo product; and drying the paint composition on the surface of the bamboo product. ### Claim 12 (depends on 11) The method of claim 11, wherein the viscosity of the paint composition is approximately 20 cps. ### Claim 13 (depends on 11) The method of claim 11, comprising spraying the paint composition on the bamboo product from an air gun at an air pressure of 0.45 Mpa. ### Claim 14 (depends on 1) The method of claim 1, comprising drying the bamboo product after applying the paint for about 15 minutes at a temperature of about 70 to about 75 degrees Celsius. ### Claim 15 (depends on 14) The method according to claim 14, comprising applying a second coat of paint after the first coat has dried. ### Claim 16 (depends on 11) The method of claim 11, wherein the bamboo product is rotated while the paint is applied at 3 to 5 revolutions per second. ### Claim 17 (depends on 11) The method of claim 11, wherein the paint is applied on the surface of the bamboo product for 3 to 5 seconds. ### Claim 18 (depends on 11) The method of claim 11, wherein the bamboo product is a slim tube-shaped bamboo product. ### Claim 19 A paint composition, comprising: 10 to 15 percent by weight of one or more flatting powders wherein the amount is effective to fill pores in a substrate on which the paint composition is applied, wherein 100% by weight of the flatting agents is micron sized particulates of silica; 50 to 55 percent by weight of one or more acrylic resins; 1 to 5 percent by weight of one or more leveling agents; 13 to 16 percent by weight of ethyl acetate; 10 to 15 percent by weight of isopropanol; and 8 to 10 percent by weight of butyl ether, wherein the percents by weight are based on the total weight of a wet composition.