# US 7,745,511 B2 · Emulsion coagulant > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,745,511 B2 - Document ID: US7745511B2 - Status: Granted - Kind: B2 - Application number: 12/174,732 - Filed: 2008-07-17 - Published: 2009-01-22 - Granted: 2010-06-29 - Earliest claimed: 2007-07-17 - Assignees: The Yokohama Rubber Co., Ltd. - Inventors: Takahiro Okamatsu; Kazushi Kimura - Web page: https://patentgrep.com/patent/US7745511B2 ## CPC - B29C 73/163: {Sealing compositions or agents, e.g. combined with propellant agents} - B29L 2030/00: Pneumatic or solid tyres or parts thereof {(conveyor belts B29L2031/7092; drive belts B29L2031/7094; fourdrinier belts B29L2031/733)} - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract An emulsion coagulant for coagulating a tire puncture sealant containing emulsion particles includes a mineral which induces aggregation of the emulsion particles by one or both of weakening of surface charge of the emulsion particles and formation of hydrogen bond between the mineral and the emulsion particles, and a gelation agent. The emulsion coagulant enables easy recovery of the tire puncture sealant from a tire as well as easy disposal of the recovered sealant. ## Claims ### Claim 1 An emulsion coagulant for coagulating a tire puncture sealant containing emulsion particles, comprising: a mineral which induces aggregation of the emulsion particles by either one or both of weakening of surface charge of the emulsion particles and formation of hydrogen bond between the mineral and the emulsion particles; and a gelation agent which is at least one member selected from the group consisting of polyethylene oxide, polypropylene oxide, and modified polymers thereof, and sodium alginate, propylene glycol alginate, and dibenzylidene sorbitol. ### Claim 2 (depends on 1) The emulsion coagulant according to claim 1, wherein the mineral is at least one member selected from the group consisting of silicate, oxide, and carbonate. ### Claim 3 (depends on 1) The emulsion coagulant according to claim 1, wherein the mineral is at least one member selected from the group consisting of alumina, sodium silicate, magnesium silicate, aluminum silicate, montmorillonite, bentonite, and zeolite. ### Claim 4 (depends on 1) The emulsion coagulant according to claim 1, wherein the gelation agent is included in an amount of 20 to 700 parts by weight in relation to 100 parts by weight of the mineral. ### Claim 5 (depends on 3) The emulsion coagulant according to claim 3, wherein the sodium silicate is at least one member selected from the group consisting of Na2SiO3, Na4SiO4, Na2Si2O5, and Na2Si4O9. ### Claim 6 (depends on 5) The emulsion coagulant according to claim 5, wherein the sodium silicate is in the form of an aqueous solution. ### Claim 7 (depends on 6) The emulsion coagulant according to claim 6, wherein the aqueous solution is water glass. ### Claim 8 (depends on 5) The emulsion coagulant according to claim 5, wherein the mineral is sodium silicate, and the gelation agent is included in an amount of 6 to 20 parts by weight in relation to 100 parts by solid weight of the sodium silicate. ### Claim 9 (depends on 1) A tire puncture sealant set comprising: a tire puncture sealant containing emulsion particles and an antifreezing agent; and the emulsion coagulant of claim 1. ### Claim 10 (depends on 9) The tire puncture sealant set according to claim 9, wherein the emulsion particles are present in the form of a natural rubber latex or a synthetic resin emulsion. ### Claim 11 (depends on 9) The tire puncture sealant set according to claim 9, wherein the antifreezing agent is at least one member selected from the group consisting of ethylene glycol, propylene glycol, and diethylene glycol. ### Claim 12 (depends on 9) The tire puncture sealant set according to claim 9, wherein the tire puncture sealant further comprises a tackifier, and the tackifier is in the form of an emulsion containing at least one member selected from the group consisting of rosin resin, polymerized rosin resin, rosin ester resin, terpene resin, and terpene phenol resin. ### Claim 13 (depends on 9) The tire puncture sealant set according to claim 9, wherein the amount of the emulsion coagulant is 6 to 40 parts by weight in relation to 100 parts by weight of the tire puncture sealant. ### Claim 14 (depends on 9) The tire puncture sealant set according to claim 9, wherein the mineral in the emulsion coagulant is sodium silicate, and weight ratio of the sodium silicate to the gelation agent (the sodium silicate (parts by weight)/the gelation agent (parts by weight)) is 50/3 to 200/20 in relation 100 parts by weight of the tire puncture sealant. ### Claim 15 (depends on 1) A method for recovering a tire puncture sealant from a tire, comprising the steps of: adding the emulsion coagulant of claim 1 to the tire puncture sealant in the tire; coagulating the tire puncture sealant with the emulsion coagulant to produce a coagulation product, and recovering the coagulation product from the tire. ### Claim 16 (depends on 2) The emulsion coagulant according to claim 2, wherein the mineral is at least one member selected from the group consisting of alumina, sodium silicate, magnesium silicate, aluminum silicate, montmorillonite, bentonite, and zeolite. ### Claim 17 (depends on 2) The emulsion coagulant according to claim 2, wherein the gelation agent is included in an amount of 20 to 700 parts by weight in relation to 100 parts by weight of the mineral.