Refresh agent

Patent metadata

Field	Value
Publication number	US-10717838-B2
Application number	US-201414765412-A
Country	US
Kind code	B2
Filing date	Mar 13, 2014
Priority date	Mar 14, 2013
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

A coated rubber composition includes a rubber composition coated with a liquid refresh agent selected from the group consisting of one or more liquid terpenes, limonene, carvone, pinene, pine needle oil, citral, orange oil, C9-C15 aliphatics, C9-C15 cycloaliphatics, ethyl lactate, dipentene, 1,8-cineole, eucalyptol, citronellol, geraniol, citronellene, terpinen-4-ol, and combinations thereof. A method of application and a coated rubber composition are also disclosed.

First claim

What is claimed is:

1. A coated rubber composition comprising a rubber composition and a coating, wherein the coating is a liquid refresh agent selected from the group consisting of: one or more liquid terpenes, limonene, carvone, pinene, pine needle oil, citral, orange oil, dodecane, decane, undecane, dipentene, 1,8-cineole, eucalyptol, citronellol, geraniol, citronellene, terpinen-4-ol, and combinations thereof; wherein the coating has an evaporation rate of about 0.1 mg/min to about 8 mg/min at 25° C. and 1 atm pressure; wherein the rubber composition comprises wax and a rubber polymer with a polydispersity (Mw/Mn) of about 1.5 to about 6.0; wherein the rubber composition is uncured.

2. The coated rubber composition of claim 1 , wherein the coating has a viscosity at 25° C. of about 0.0001 to about 100 cP.

3. The coated rubber composition of claim 1 , wherein all tack-improving agents or adhesives coated on the rubber composition consist essentially of the liquid refresh agent.

4. The coated rubber composition of claim 1 , wherein the flash point of the coating is about 60° C. to about 100° C.

5. The coated rubber composition of claim 1 , wherein the refresh agent is dodecane.

6. The coated rubber composition of claim 1 , wherein the refresh agent is selected from the group consisting of: carvone, citral, dodecane, decane, undecane, 1,8-cineole, eucalyptol, citronellol, geraniol, and combinations thereof.

7. The coated rubber composition of claim 1 , wherein the rubber composition further comprises 50 to about 100 phr of a reinforcing filler.

8. The coated rubber composition of claim 1 , further comprising a carbon black reinforcing filler.

9. The coated rubber composition of claim 7 , wherein the reinforcing filler is carbon black.

10. The coated rubber composition of claim 1 , wherein the rubber composition further comprises about 70 to about 100 phr of reinforcing filler.

11. The coated rubber composition of claim 1 , wherein the rubber composition is a component of a rubber air spring or a tire.

12. The coated rubber composition of claim 1 , wherein the liquid refresh agent consists essentially of a selection from the group consisting of:
one or more liquid terpenes, limonene, carvone, pinene, pine needle oil, citral, orange oil, dodecane, decane, undecane, dipentene, 1,8-cineole, eucalyptol, citronellol, geraniol, citronellene, terpinen-4-ol, and combinations thereof.

13. An article of manufacture comprising: a first uncured rubber component comprising an elastomer selected from the group consisting of: polychloroprene, butyl rubber, hevea and non-hevea natural rubber, polyisoprene, polybutadiene, nitrile rubber, poly(isoprene-styrene), poly(isoprene-butadiene), poly(styrene-butadiene), terpolymers of isoprene, styrene, and butadiene, and combinations thereof, the first uncured rubber component having a polydispersity (Mw/Mn) of about 1.5 to about 6; a wax; the first uncured rubber component including a first coated surface, the first coated surface coated with an organic liquid having the following characteristics: an evaporation rate of about 0.1 mg/min to about 8 mg/min at 25° C. and 1 atm pressure; and a flash point of about 30° C. to about 100° C., and wherein the organic liquid is selected from the group consisting of: one or more liquid terpenes, limonene, carvone, pinene, pine needle oil, citral, orange oil, dodecane, decane, undecane, dipentene, 1,8-cineole, eucalyptol, citronellol, geraniol, citronellene, terpinen-4-ol, and combinations thereof.

14. The article of manufacture of claim 13 , wherein the organic liquid has a viscosity at 25° C. of about 0.0001 to about 100 cP.

15. The article of manufacture of claim 13 , wherein the organic liquid is selected from the group consisting of: carvone citral, dodecane, decane, undecane, 1,8-cineole, eucalyptol, citronellol, geraniol, and combinations thereof.

16. The article of manufacture of claim 13 , further comprising:
a second uncured rubber component comprising an elastomer selected from the group consisting of: polychloroprene, butyl rubber, hevea and non-hevea natural rubber, polyisoprene, polybutadiene, nitrile rubber, poly(isoprene-styrene), poly(isoprene-butadiene), poly(styrene-butadiene), terpolymers of isoprene, styrene, and butadiene, and combinations thereof;
the second uncured rubber component being joined to the first coated surface of the uncured rubber component at an interface.

17. The article of manufacture of claim 13 , wherein the first coated surface is joined to an overlapping or butt-end portion of the first uncured rubber component.

18. The article of manufacture of claim 13 , further comprising a second uncured rubber component comprising an elastomer selected from the group consisting of:
polychloroprene, butyl rubber, hevea and non-hevea natural rubber, polyisoprene, polybutadiene, nitrile rubber, poly(isoprene-styrene), poly(isoprene-butadiene), poly(styrene-butadiene), terpolymers of isoprene, styrene, and butadiene, and combinations thereof;
the second uncured rubber component including a second coated surface, the second coated surface comprising an organic liquid selected from the group consisting of: one or more terpenes, polylimonene, limonene, carvone, α-pinene, pine needle oil, citral, orange oil, dodecane, dipentene, 1,8-cineole, eucalyptol, citronellol, geraniol, citronellene, terpinen-4-ol, borneol, camphor, guayule resin, and combinations thereof;
the second coated surface of the second uncured rubber component being j oined to the first coated surface of the first uncured rubber component at an interface.

19. The article of manufacture of claim 13 , wherein the article is a rubber air spring or a tire component.

Assignees

• Bridgestone Americas Tire Operations Llc

Inventors

• Randall Amy M
• Dunlavy Maryangel G

Classifications

• B60C1/00 Primary

  Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition · CPC title

• C08J7/043

  Improving the adhesiveness of the coatings per se, e.g. forming primers (adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50) · CPC title

• C08J7/065 Primary

  Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article · CPC title

• C08J2321/00

  Characterised by the use of unspecified rubbers · CPC title

• C09J193/04

  Rosin · CPC title