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Puncture sealant

A technology of tire sealant and emulsifier, used in special tires, tire parts, other chemical processes, etc., can solve the problem of low temperature stability of tires, low temperature repairability and low temperature stability. problems such as poor performance, to achieve the effect of excellent perforation sealing

Active Publication Date: 2019-03-01
KAKUICHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned Patent Documents 1 to 3, the puncture sealants prepared by using synthetic latex are poor in repairability at low temperatures, and therefore usually contain binders such as terpene-based resins and rosin-based resins.
[0006] However, if the amount of binders such as terpene-based resins and rosin-based resins in the sealant is increased, the repairability at low temperature of the tire is improved but the low-temperature stability is lowered, and low-temperature repairability and low-temperature stability are still involved. highly compatible issues

Method used

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  • Puncture sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～9 and comparative example 1～3

[0068] The materials shown in Table 1 below [SBR latex: 100 parts by mass, propylene glycol + water: 120 parts by mass, binder (mass %), and emulsifier (mass parts)] were mixed so as to achieve each ratio to prepare according to the example The puncture sealants of 1-9 and comparative examples 1-3.

[0069] Respectively recorded in Table 1 is the content (parts by mass) of propylene glycol based on 100 parts by mass of SBR latex and the content (mass %) based on the total amount of puncture sealant, and the content (mass %) based on the total amount of puncture sealant ( solid content concentration), emulsifier content (mass parts) based on 100 mass parts of SBR latex and its content (mass %) based on the total amount of puncture sealant.

[0070] Each of the obtained puncture sealants was used to calculate the gel rate (%) at -25° C. as an index of low-temperature repairability under the above-mentioned measurement conditions, and to evaluate stability and puncture-tightness ...

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Abstract

Provided is a tire puncture sealant which not only combines low-temperature repair properties with low-temperature stability on a high level but also has excellent puncture sealing properties. This tire puncture sealant is characterized by containing synthetic rubber latex, having an adhesive content less than 2 mass%, and having a degree of gelation at -25 DEG C, as determined through a Maron mechanical stability test according to JIS-K6387-1:2011, of 0.05% or higher.

Description

technical field [0001] The present invention relates to puncture sealants for sealing punctured tires. Background technique [0002] In recent years, puncture repair kits, in which a puncture sealant, a small compressor, etc. are installed, have been introduced into automobiles as standard or optional equipment. [0003] The puncture sealant must be able to be used at low to high temperatures so that the puncture sealer can be used in warm to cold regions without problems. [0004] Known as conventional sealants are, for example, 1) puncture sealers for tires, which contain rubber latex and 1,3-propanediol and the ratio of 1,3-propanediol in the liquid component is 55 to 61% by mass (see, For example, patent document 1), 2) puncture sealant for tires, which contains rubber latex, binders such as terpene resins and rosin resins, antifreezing agents, and surfactants, and the surfactants include a solubility parameter of 15 or more glycol (ethylene glycol, etc.) and a solubil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10B29C73/02B60C1/00C08K5/09C08L9/00C08L9/04C08L9/08C08L13/02
CPCB29C73/02B60C1/00C08K5/09C09K3/10C08L9/00C08L9/04C08L9/08C08L13/02C08K2201/014B29C73/163B29K2009/06
Inventor 中村智窪田纯
Owner KAKUICHI KASEI KK