Jessica Lee Miller 's comment on Archival Materials and Methods

Hi Misty,
I restore art in Austin Texas. I am wondering the name of the acrylics that are "varnish already mixed acrylics." I was told these are the best for restoration. Also, do you use a vacuum when putting an old painting on new canvas?
What are your thoughts, if you don't mind me asking on using silk and wax as a "new" canvas?
Thank you so much, Jessie Lee Miller