# US 8,772,370 B1 · Antifreeze agent for tire sealants > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,772,370 B1 - Document ID: US8772370B1 - Status: Granted - Kind: B1 - Application number: 13/804,242 - Filed: 2013-03-14 - Granted: 2014-07-08 - Earliest claimed: 2013-03-14 - Assignees: Illinois Tool Works Inc. - Applicants: Illinois Tool Works Inc. - Inventors: Shees N. Sulemanji - Web page: https://patentgrep.com/patent/US8772370B1 ## CPC - C08K 5/19: Quaternary ammonium compounds - B29C 73/163: {Sealing compositions or agents, e.g. combined with propellant agents} - C08K 5/41: Compounds containing sulfur bound to oxygen - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - 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) ## Abstract An environmentally safe, biodegradable aqueous antifreeze solution and a puncture sealing composition containing the same are provided. The antifreeze solution includes an antifreeze agent selected from trimethylglycine, dimethyl sulfoxide, and derivatives and combinations thereof. The composition is effective in forming and maintaining seals in tube and tire punctures. ## Claims ### Claim 1 A puncture sealing composition, comprising: rubber latex particles; and about 5% to about 75% by weight of an aqueous antifreeze solution; wherein the aqueous antifreeze solution includes about 25% to about 60% by weight water and about 40% to about 65% by weight of an antifreeze agent selected from the group consisting of trimethylglycine, dimethyl sulfoxide, and combinations thereof. ### Claim 2 (depends on 1) The puncture sealing composition of claim 1, wherein the antifreeze agent is selected from the group consisting of trimethylglycine and combinations thereof. ### Claim 3 (depends on 2) The puncture sealing composition of claim 2, wherein the antifreeze agent comprises trimethylglycine. ### Claim 4 (depends on 3) The puncture sealing composition of claim 3, wherein the antifreeze solution further comprises glycerin. ### Claim 5 (depends on 4) The puncture sealing composition of claim 4, wherein the glycerin is present in an amount not exceeding the amount of trimethylglycine. ### Claim 6 (depends on 1) The puncture sealing composition of claim 1, wherein the antifreeze agent is selected from the group consisting of dimethyl sulfoxide and combinations thereof. ### Claim 7 (depends on 1) The puncture sealing composition of claim 1, wherein the rubber latex is present at about 25% to about 60% by weight. ### Claim 8 (depends on 1) The puncture sealing composition of claim 1, further comprising about 5% to about 30% by weight of an adhesive selected from the group consisting of terpene resins, phenolic resins, polyvinyl esters, polyvinyl alcohol, polyvinyl pyrrolidine, and combinations thereof. ### Claim 9 (depends on 1) The puncture sealing composition of claim 1, further comprising about 2% to about 15% by weight fibers. ### Claim 10 A puncture sealing composition, comprising: rubber latex; and about 5% to about 75% of an aqueous antifreeze solution including water and an antifreeze agent selected from the group consisting of trimethylglycine, dimethyl sulfoxide, and combinations thereof. ### Claim 11 (depends on 10) The puncture sealing composition of claim 10, wherein the antifreeze agent comprises trimethylglycine in an amount of about 40% to about 60% by weight of the aqueous antifreeze solution. ### Claim 12 (depends on 10) The puncture sealing composition of claim 10, wherein the antifreeze agent comprises a mixture of trimethylglycine and glycerin in a combined amount of about 40% to about 75% by weight of the aqueous antifreeze solution. ### Claim 13 (depends on 10) The puncture sealing composition of claim 10, wherein the antifreeze agent comprises dimethyl sulfoxide in an amount of about 40% to about 75% by weight of the aqueous antifreeze solution. ### Claim 14 (depends on 10) The puncture sealing composition of claim 10, comprising about 25% to about 60% by weight of the aqueous antifreeze solution. ### Claim 15 (depends on 10) The puncture sealing composition of claim 10, further comprising about 5% to about 30% by weight of an adhesive. ### Claim 16 (depends on 10) The puncture sealing composition of claim 10, further comprising about 1% to about 20% by weight fibers. ### Claim 17 (depends on 10) The puncture sealing composition of claim 10, wherein the rubber latex is selected from the group consisting of natural rubber latex, styrene-butadiene rubber, acrylonitrile-butadiene rubber, ethylene-vinyl acetate rubber, chloroprene rubber, vinyl pyridine rubber, butyl rubber, polyurethane latex, acrylic latex, and combinations thereof. ### Claim 18 A method of making a puncture sealing composition, comprising the steps of: mixing rubber latex with an adhesive while stirring, to form a mixture; separately preparing an aqueous antifreeze solution including an antifreeze agent selected from the group consisting of trimethylglycine, dimethyl sulfoxide and combinations thereof; and adding the aqueous antifreeze agent to the mixture while stirring. ### Claim 19 (depends on 18) The method of claim 18, wherein the antifreeze agent comprises trimethylglycine. ### Claim 20 (depends on 18) The method of claim 18, wherein the antifreeze agent comprises dimethyl sulfoxide.