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UV Cocooning SM Process:  A Heraeus Noblelight America Exclusive 

 

Benefits 

  • Reduces Styrene Emissions 
  • Improves Employee Retention 
  • Improves Community Relations 

UV Cocooning SM Process 

 

Layer diagram 

 

Scope of The Process: Ultraviolet light is used to seal off the surface of room temperature or thermosetting open mold systems to reduce or eliminate the evaporation monomer-polymer systems. 

 

Summary: The addition of incremental percentages of a photoinitiator followed by a quick scanning of UV light from a high-powered UV source will "cocoon" or set the polymeric surface, reducing or eliminating volatile monomer or polymer loss. The system must contain at least one UV polymerizable moeity that will cross-link to a UV light source. The faster the surface is set, the greater will be the retained volatile monomer for use in the later open mold polymerizing condition. 

 

Benefits to Manufacturers: By reducing the volatile monomer evaporation, environmental regulations can be met, enabling production capacity expansion. The worker environment is improved increasing employee retention. There may also be reduced expenses for volatile monomers since less evaporates from the product. 

 

Benefits  

  • Reduces Styrene Emissions 
  • Improves Employee Retention 
  • Improves Community Relations 

 

Prior Art: In many industrial processes, volatile monomers such as styrene, vinyl toluene or vinyl ethers are used with oligomers (such as unsaturated polyesters or vinyl esters) and cured in open molds using accelerator catalyst with room temperature or baking oven conditions. In the curing cycle, large amounts of the diluent monomer can be lost through surface evaporation before surface set is accomplished. This evaporation causes environmental pollution, is hazardous to surrounding workers and causes bulk weight losses and compositional changes in the finished cured product. Attempts have been made to reduce loss by additive addition to change evaporating rates. Further paraffin surface sealing efforts have been tried. All of these methods have shortcomings that can be overcome by UV CocooningSM. 

 

For more information on UV CocooningSMclick here  to download a paper presented by Roger McCartney at RadTech Europe.  

 

Contact us if you would like more information or have specific questions. 

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