space manufactuof acrylic vs. glass?

>Behalf Of joe@...
>
>Large aquaria are made of acrylic, rather than glass. Acrylic
>windows can hold tremendous pressure, and (I believe) are more
>resistant to breakage from impact too.
>
>Has anyone looked at the possibility of manufacturing acrylic in
>space, for use instead of glass for windows that must contain
>pressure? What are the advantages and disadvantages as compared to
>glass?
>