"The methylamine keeps flowing no matter what" - Walter White dead freight*
Methylamine is prepared commercially by the reaction of ammonia with methanol in the presence of a silicoaluminate catalyst. Dimethylamine and trimethylamine are coproduced; the reaction kinetics and reactant ratios determine the ratio of the three products. The product most favoured by the reaction kinetics is trimethylamine.
CH3OH + NH3 → CH3NH2 + H2O
This has been taken from the breaking bad wiki
You really thought i would just tell you how to make it, you know thats illegal right...