the partial curing was so that you could use your pots to prep gas-free partially cured urethanes and ship them out to other people who can shape them and then finish the cure. it's an easier way of loaning out your pots 
That is very intriguing. I would like to know more about -what- materials would stop reacting in the absence of O2, and how they could be packaged for shipping while remaining free of contaminants.
you know those space bags and that vacuum sealer crap they sell at costco?
yah, that. as far as transportation is concerned that will work. quite well. just spec your bags at like 8-10 mil HDPE (low gas permeability). and don't rely on a check valve. suck all the o2 out and then melt a seal.
as far as materials are concerned, we have to dive into the datasheets on the smooth-on urethanes and on other thermosets and elastomers. i'm pretty sure natural rubber actually has this properly, actually, so it's quite a fundamental property of thermosets. meaning, you have to work on your compound to break the A -> B -> C phase change series rather than the other way around.
