“The raw materials for epoxy resin production are today largely petroleum derived, although some plant derived sources are now becoming commercially available (e.g. plant derived glycerol used to make epichlorohydrin).”

- https://en.wikipedia.org/wiki/Epoxy

if they were obtained from non-fossil sources - but they weren’t, and the industry hasn’t switched and may never switch to plant based.

Also, what you said isn’t necessarily true even with plant based resins. What is the carbon cost of producing new resin vs recycling old?

There’s more to the impact of a material than the carbon stored inside it.

Yes, we were all duped by the recycling industry. No that doesn’t make all attempts at recycling a lie.

we are having an existential marine crisis due to the millions of tons of essentialy non recyclable "plastic" bieng dumped in our oceans, a fully recyclable alternative is worth trillions over the long haul. The switch will happen when a viable alternative is discovered, and a material that has inherent value will be a key requirement. If this new epoxy is a true engineered material that is suitable for say, vacume infusion molding of things like wind turbine blades,and smaller ships, and injection molding of buckets and computer chasis etc, etc , then it will become universal for those things.

An adjacent design validation question on a green chip factory and product design:

Will Phytic acid in Lignin-Vitrimer encase burning CNT carbon nanotubes in a phosphorous char cage, this preventing health hazards and combustion?

This says "phosphorous epoxy".

FR4 silicon PCBs are N-doped and P-doped.