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RE: Styrene replacement
Can they formulate the styrene into a future gel coat
We have a formulator of water-based products that saves
the tank rinseate and blends it into the next batch of the same product.
It sometimes takes a month to make a given product again.
They would need a tracking system and good measurements
Helping Minnesota Businesses Maximize
Resource Efficiency, Prevent Pollution and Reduce Costs.
are likely using styrene for cleanup because styrene is part of the gel coat
formula. So, substituting another solvent may make a management problem
more complicated and will not eliminate styrene from the
would start in reviewing their cleanup process to see if there are ways to
minimize styrene use. Perhaps wiper blades can be used to remove the bulk of the
gel coat from the mix tank wall. Maximize product recovery from the mix tank and
you reduce cleanup waste. Can batches be sequenced from light to dark, avoiding
the need to clean the tank?
the styrene used for cleaning? Are the mix tank walls sprayed down or is the
tank filled and drained? While spraying minimizes solvent use, it
generates more air emissions. It might be better to fill, mix, and then
drain the tank. However, this will generate much more solvent waste so a
recovery still will be mandatory.
1111 S. Arroyo Parkway
Pasadena CA 91105
Cell: (213) 359-9805
One of the companies we are working with
manufactures gel coat. As part of the clean-up process they rinse the
tanks with styrene to clean them out between batches, drum up the used styrene
and send it out as hazardous waste.
We have provided them information on solvent
distillation, but with styrene now classified as a "probable carcinogen," does
anyone know of an effective (and cost-effective) substitute for
styrene in the clean-up process?
Thanks very much,
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