By using polyfills is it possible to develop web apps with AngularJS for IE6 ? If so what are some of the polyfills that I would require ?
As far as I know this is simply not possible.
Why would you want to support IE6? IE6 has less than 1.1% usage worldwide. It would be an overkill.
You could display a 'please upgrade your browser' type message for IE8 and below.