You might consider a photo-definable polyimide, e.g. HD8820 from HD Micro
systems.

-Michael

On Tue, Sep 20, 2011 at 12:00 PM, sumit kalsi wrote:

> Hi,
> I need to perform some experiments on positive resist which would involve
> buffer
> ph=7 and ethanol. Hence, I am looking for a positive resist which is
> chemically
> stable than AZ9260. Does anyone have experience with this?
>
>  Many thanks,
>
> Sumit