Liquid coagulant and tire puncture sealing material set

Patent metadata

Field	Value
Publication number	US-2016108299-A1
Application number	US-201514984669-A
Country	US
Kind code	A1
Filing date	Dec 30, 2015
Priority date	May 27, 2010
Publication date	Apr 21, 2016
Grant date	—

Abstract

Disclosed is a liquid coagulant which can be injected into the inside of a tire without the need of removing the tire from a rim and which can prevent the scattering of a residue of a tire puncture sealing material when the tire is removed from the rim. The liquid coagulant can coagulate an emulsion that contains natural rubber latex and/or a synthetic resin emulsion. The liquid coagulant contains a foaming agent capable of foaming the emulsion. Also disclosed is a tire puncture sealant set including the coagulant and a method of coagulating a tire puncture sealant.

First claim

1 . A tire puncture sealant set, comprising:
a tire puncture sealant which contains a natural rubber latex, a synthetic resin emulsion, and an antifreezing agent; and a liquid coagulant for coagulating the tire puncture sealant, wherein the liquid coagulant includes a blowing agent for foaming the tire puncture sealant, and the blowing agent is one of a reactive blowing agent using a urethane resin and/or an acrylic resin having two or more carboxy groups and a hydrogencarbonate salt; and a reactive blowing agent using a polyisocyanate compound.

2 . The tire puncture sealant set according to claim 1 , wherein the synthetic resin emulsion is at least one of an ethylene vinyl acetate emulsion, an acrylic emulsion, and a urethane emulsion.

3 . The tire puncture sealant set according to claim 1 , wherein the antifreezing agent is at least one of ethylene glycol, propylene glycol, diethylene glycol, glycerin, methanol, ethanol, and isopropyl alcohol.

4 . The tire puncture sealant set according to claim 1 , wherein the liquid coagulant further comprises an antifreezing agent.

5 . The tire puncture sealant set according to claim 4 , wherein the antifreezing agent is at least one of ethylene glycol, propylene glycol, diethylene glycol, glycerin, methanol, ethanol, and isopropyl alcohol.

6 . A method of coagulating a tire puncture sealant remaining in a pneumatic tire, comprising the step of:
injecting a liquid coagulant into a punctured tire, in which the tire puncture sealant is remaining, without removing the tire from a rim, wherein the tire puncture sealant includes a natural rubber latex, a synthetic resin emulsion and an antifreezing agent, wherein the liquid coagulant includes a blowing agent for foaming the tire puncture sealant, and the blowing agent is one of a reactive blowing agent using a urethane resin and/or an acrylic resin having two or more carboxy groups and a hydrogencarbonate salt; and a reactive blowing agent using a polyisocyanate compound, and wherein the blowing agent causes in-situ coagulation of the tire puncture sealant, leaving no liquid components in the tire.

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Okamatsu Takahiro
• Kimura Kazushi

Classifications

• B29K2105/04

  cellular or porous · CPC title

• B29C73/025

  fed under pressure · CPC title

• B29L2030/00

  Pneumatic or solid tyres or parts thereof {(conveyor belts B29L2031/7092; drive belts B29L2031/7094; fourdrinier belts B29L2031/733)} · CPC title

• B29K2023/083

  EVA, i.e. ethylene vinyl acetate copolymer · CPC title

• B29C73/163

  Sealing compositions or agents, e.g. combined with propellant agents · CPC title