What is methylmeene used for?
Methylamine is used as a building block that synthesizes commercially compounds. It can also be used to make intermediates of agricultural chemicals. It is an organic compound with the formula CH3NH2. Go to http://www2.dupont.com/Methylamines/en_US/uses_apps/index.html for more details.
If you mean methylamine, it is a chemical used in the production process of some other chemicals. There is no daily or popular use that I can think of.
It is used as a building block when synthesizing commercial compounds, but it is also used in the production of methamphetamine. There are no other uses that I am aware of, but it is probably used for other things as well.