These videos give you a brief introduction into the use of mental ray materials in 3ds max.
How to remove material from your 3d-objects
You normaly want to apply material to your 3D-object. But what do you have to do when you want to remove the material again?
1. Select the 3D objects, where you want to remove your material
2. Enter the following script in your Maxscript-listener window and finish with “return-key”:
$.material = undefined