Recycled crumb rubber coating
View Patent ↗The recycled crumb rubber coating is a corrosion-proof coating for piping and the like. The coating is formed from recycled crumb rubber mixed with an epoxy resin and a hardener. Crumb rubber is first mixed with a liquid epoxy resin. An agent for reducing the viscosity of the liquid epoxy resin may also be added. A hardener is then added to this mixture. Finally, powdered crumb rubber is added and mixed to form the recycled crumb rubber coating. The total crumb rubber forms about 23-24 wt % of the coating, the balance being epoxy. The epoxy has liquid epoxy resin and a hardener in a ratio of about 2:1 by weight. The epoxy may also include a viscosity reducing agent of about 1% of the total weight of the liquid resin and the hardener. The crumb rubber may be a blend of powdered crumb rubber and mesh crumb rubber.
1. A recycled crumb rubber coating composition, comprising a mixture of:
about 24.0 wt % of a crumb rubber blend having about 20 wt % powdered crumb rubber and about 80 wt % mesh crumb rubber; and
the balance being epoxy having a liquid epoxy resin: epoxy hardener ratio of about 2:1 by weight.
2. The recycled crumb rubber coating composition as recited in claim 1 , wherein said liquid epoxy resin comprises a reaction mixture of bisphenol A, bisphenol F and epichlorohydrin.
3. The recycled crumb rubber coating composition as recited in claim 2 , wherein said hardener comprises an aliphatic polyamine hardener.
4. The recycled crumb rubber coating composition as recited in claim 1 , wherein said hardener comprises an aliphatic polyamine hardener.
5. The recycled crumb rubber coating composition as recited in claim 4 , wherein said liquid epoxy resin comprises a reaction mixture of bisphenol A, bisphenol F and epichlorohydrin.
6. The recycled crumb rubber coating composition according to claim 1 , wherein said epoxy further comprises a viscosity reducing agent.
7. The recycled crumb rubber coating composition according to claim 6 , wherein said viscosity reducing agent comprises about 1% by weight of the total weight of said liquid epoxy resin and said epoxy hardener.
8. The recycled crumb rubber coating composition as recited in claim 6 , wherein said epoxy viscosity reducing agent comprises benzyl alcohol.
9. The recycled crumb rubber coating composition as recited in claim 8 , wherein said hardener comprises an aliphatic polyamine hardener.
10. The recycled crumb rubber coating composition as recited in claim 9 , wherein said liquid epoxy resin comprises a reaction mixture of bisphenol A, bisphenol F and epichlorohydrin.
11. A recycled crumb rubber coating composition, comprising a mixture of:
between about 24 wt % and about 50 wt % of a crumb rubber blend having a mixture of powdered crumb rubber and mesh crumb rubber; and
the balance being epoxy having a liquid epoxy resin: epoxy hardener ratio of about 2:1 by weight.
12. The recycled crumb rubber coating composition as recited in claim 11 , wherein said liquid epoxy resin comprises a reaction mixture of bisphenol A, bisphenol F and epichlorohydrin.
13. The recycled crumb rubber coating composition as recited in claim 12 , wherein said hardener comprises an aliphatic polyamine hardener.
14. The recycled crumb rubber coating composition as recited in claim 11 , wherein said hardener comprises an aliphatic polyamine hardener.
15. The recycled crumb rubber coating composition as recited in claim 14 , wherein said liquid epoxy resin comprises a reaction mixture of bisphenol A, bisphenol F and epichlorohydrin.
16. The recycled crumb rubber coating composition according to claim 11 , wherein said epoxy further comprises a viscosity reducing agent.
17. The recycled crumb rubber coating composition according to claim 16 , wherein said viscosity reducing agent comprises about 1% by weight of the total weight of said liquid epoxy resin and said epoxy hardener.
18. The recycled crumb rubber coating composition as recited in claim 16 , wherein said epoxy viscosity reducing agent comprises benzyl alcohol.
19. The recycled crumb rubber coating composition according to claim 11 , wherein said crumb rubber blend consists of between 20% and 80% powdered crumb rubber, the balance being mesh crumb rubber.