September 2011: What do you think is the outlook for epoxy coatings based on bisphenol A diglycidyl ether?
Currently there is concern about the presence of low levels of unreacted bisphenol A (BPA) trapped in the cured film that can leach out and be ingested by humans. There are many studies that attribute health hazards associated with BPA such as endocrine disruptor.
EPOXY PRIMER FINISH COATINGS - Sep 02, 2011
posted by BOGDAN DANA, R&D - Applied/ Formulation/ Product development at MATRIX COMPSOITES AND ENGINEERING
If the epoxy resins can be modified with reactive diluents of acrylic nature for Michael addition reactions, then the outdoor weathering properties will be significantly improved to add to their already outstanding chemical and mechanical properties. Like this they will not be extremely expensive like the silicone/silane modified epoxies and they have got great potential to be used as a one coat primer finish.
posted by Ken Eberts, R&D - Applied/ Formulation/ Product development at NEI Corporation
Despite the somewhat incomplete health assessment (e.g., lack of data for typical leaching concentrations), the amount of bad press BPA has received has made "BPA-FREE" a strong selling point in many consumer products. Alternatives, such as copolyesters, are likely the way of the future.
posted by Laurent BARNILS, Marketing / Sales at OMG BORCHERS SAS
Let the studies be finished, the BPA has been proved is efficiency since many years without noticeable issues.
As every chemical substance everything is based on dosage and max dosage supported by human organism.
It's easy to ban substance like that whithout the right conclusion, but it's ridiculous doing confusion between danger & risk!
*A shark is a danger but the risk it's so high that we should avoid going in the see???
*Curare is a dangerous substance and could be a poison with high dosage but it's also an anestesic used in hospitals!
*With this kind of quick conclusions we could think to forbid everything: cars lead to accidents, better to forbid cars ; water is responsible of children decease every year (through swimming pools or bath), should we forbid water....moreover if you drink more than 10L/day of water your body will have big issues (diabet, renal failures, ionic diminution...).