In a previous post, I mentioned that I was looking at the difference between two phenolic resin components - one OEM and one original.
What we found was the resins were essentially the same apart from an additive - phthalic anhydride vs tetrahydrophthalic anhydride.
These compounds were detected via pyrolysis MS, so presumably they were present as ethers functioning as plasticisers.
What differences in property might one expect ingoing from phthalic anhydride to THPA additive? Or do they perform exactly the same function, with subtitution being a function of practicality (cost, safety issues)?
Thanks
What we found was the resins were essentially the same apart from an additive - phthalic anhydride vs tetrahydrophthalic anhydride.
These compounds were detected via pyrolysis MS, so presumably they were present as ethers functioning as plasticisers.
What differences in property might one expect ingoing from phthalic anhydride to THPA additive? Or do they perform exactly the same function, with subtitution being a function of practicality (cost, safety issues)?
Thanks