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Tire Recycling: SBR Degradation Using Monochloramine: A Novel Method for Recycling SBR (13090)

Detailed Technology Description
UofL researchers have developed a novel method for degradation and recycling of SBR.
*Abstract

Tire Recycling: SBR Degradation Using Monochloramine 

A novel method for recycling SBR

RDF #13090

Highlights

  • Novel method for recycling SBR, which alters the chemical composition of the material, not just macroscopic properties;

  • Could be used to recycle automobile tires that pose a significant health hazard in landfills and tire hotels;

  • Should be easily scalable to industry standards with higher monochloramine concentration.

  • Could be used to recycle other cross linked rubbers, such as neoprene and natural rubbers.

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Technology 

Styrene butadiene rubber (SBR) has the highest volume production of any synthetic rubber and is used extensively in automobile tires and tire related products.

Existing options for recycling SBR are limited due to the vulcanization process, which crosslinks polymer chains of the rubber with sulfur. Because this makes tires more durable and harder to break down, used ones currently can only be reused — chopped up and added to other products — rather than recycled.

To fill this need, UofL researchers have developed a novel method for degradation and recycling of SBR. 

They have demonstrated that when finely ground SBR reacts with a monochloramine solution, the SBR becomes resin-like, thereby losing its cross-linking properties and degrading it to the unvulcanized base SBR polymer. 

Returning the SBR to its unvulcanized form allows it to be processed at the microscopic level and allows it to be recycled into new products.  

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Current Status

  • IP Status: Issued Non-Provisional 9,458,30
  • Development Status: Reaction Process Verified 
  • Fields of Use Available: All

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Inventors

  • Gerold Willing, Ph.D.
  • Patrick Kroeger

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MORE INFORMATION: thinker@louisville.edu / 502.852.2965 / Attn.: RDF#13090

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*This Technology is available for licensing, further development, or industrial partnering*
Country/Region
USA

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