Rare off-Earth elements

[Prometheus]

5 hours ago, Ken Fabian said:

There should be abundant carbonaceous chondrite materials in asteroids that could be a raw material for making polymers. Given carbonaceous meteorites can have significant amounts of nickel-iron - mixed in as grains or chondrules - as well as oxides and sulphides, they have hypothetical potential for asteroid mining

So they have the carbon and hydrogen to make polymers but how difficult is this process: is it already established or would it require new technologies (aside from doing it all in space)?