Tire puncture sealant
View Patent ↗A tire puncture sealant having both excellent sealing performance and excellent storage performance, specifically a tire puncture sealant containing a natural rubber latex (A) and a VEVA copolymer resin emulsion (B), wherein the solid content mass of the natural rubber latex (A)/solid content mass of the VEVA copolymer resin emulsion (B) is between 80/20 and 15/85.
1. A tire puncture sealant comprising:
a natural rubber latex (A) and
a copolymer resin emulsion of an ester of versatic acid and vinyl alcohol (hereinafter called “VEOVA”) (B),
wherein the VEOVA copolymer resin emulsion (B) is an ethylene-vinyl acetate-VEOVA copolymer resin emulsion, and
wherein a ratio of a solid content mass of the natural rubber latex (A)/a solid content mass of the VEOVA copolymer resin emulsion (B) is in a range from 80/20 to 15/85.
2. The tire puncture sealant according to claim 1 , wherein a total solid content of the natural rubber latex (A) and the VEOVA copolymer resin emulsion (B) is from 20.0 to 40.0 mass% of a total mass of the tire puncture sealant.
3. The tire puncture sealant according to claim 1 , further comprising a surfactant, wherein a content of the surfactant is from 1.0 to 6.0 mass% of the solid content mass of the natural rubber latex (A).
4. The tire puncture sealant according to claim 3 , wherein the surfactant comprises a non-ionic surfactant and an anionic surfactant, and a ratio of a comprised mass of the non-ionic surfactant/a comprised mass content of the anionic surfactant is in a range from 1.0/1.0 to 1.0/5.0.
5. The tire puncture sealant according to claim 4 , wherein the non-ionic surfactant is a polyoxyethylene alkyl ether and the anionic surfactant is sodium lauryl sulfate.
6. The tire puncture sealant according to claim 1 , further comprising from 80 to 180 parts by mass of an antifreezing agent per 100 parts by mass of a total solid content of the natural rubber latex (A) and the VEOVA copolymer resin emulsion (B).
7. The tire puncture sealant according to claim 6 , wherein an antifreezing component of the antifreezing agent is selected from the group consisting of propylene glycol, ethylene glycol, di(ethylene glycol) and mixtures thereof.
8. The tire puncture sealant according to claim 2 , further comprising a surfactant, wherein a content of the surfactant is from 1.0 to 6.0 mass % of the solid content mass of the natural rubber latex (A).
9. The tire puncture sealant according to claim 2 , further comprising from 80 to 180 parts by mass of an antifreezing agent per 100 parts by mass of a total solid content of the natural rubber latex (A) and the VEOVA copolymer resin emulsion (B).
10. The tire puncture sealant according to claim 1 , further comprising from 80 to 180 parts by mass of an antifreezing agent per 100 parts by mass of a total solid content of the natural rubber latex (A) and the VEOVA copolymer resin emulsion (B).
11. The tire puncture sealant according to claim 3 , further comprising from 80 to 180 parts by mass of an antifreezing agent per 100 parts by mass of a total solid content of the natural rubber latex (A) and the VEOVA copolymer resin emulsion (B).
12. The tire puncture sealant according to claim 4 , further comprising from 80 to 180 parts by mass of an antifreezing agent per 100 parts by mass of a total solid content of the natural rubber latex (A) and the VEOVA copolymer resin emulsion (B).
13. The tire puncture sealant according to claim 5 , further comprising from 80 to 180 parts by mass of an antifreezing agent per 100 parts by mass of a total solid content of the natural rubber latex (A) and the VEOVA copolymer resin emulsion (B).
14. The tire puncture sealant according to claim 1 , further comprising an amount of gel produced in the natural rubber latex of less than 2 mass %.
15. The tire puncture sealant according to claim 1 , further comprising an amount of gel produced in the natural rubber latex of less than 1 mass %.
16. The tire puncture sealant according to claim 1 , further comprising an amount of gel produced in the natural rubber latex of less than .5 mass %.
17. The tire puncture sealant according to claim 3 , wherein the surfactant comprises a non-ionic surfactant and an anionic surfactant, and a ratio of a comprised mass of the non-ionic surfactant/a comprised mass content of the anionic surfactant is in a range from 1.0/1.0 to 1.0/3.0.
18. A tire puncture sealant comprising:
a natural rubber latex (A),
an amount of gel produced in the natural rubber latex of less than 2 mass %, and
a copolymer resin emulsion of an ester of versatic acid and vinyl alcohol (hereinafter called “VEOVA”) (B),
wherein a ratio of a solid content mass of the natural rubber latex (A)/a solid content mass of the VEOVA copolymer resin emulsion (B) is in a range from 80/20 to 15/85.
19. The tire puncture sealant according to claim 18 , wherein the VEOVA copolymer resin emulsion (B) is an ethylene-vinyl acetate-VEOVA copolymer resin emulsion.
20. The tire puncture sealant according to claim 18 , wherein the amount of gel produced in the natural rubber latex is less .5 mass %.