You can only use Diasec if you pay for the license which they are now starting to sell in the US. Juergen's article references GE products a lot so I would contact them as I believe most places in the states using the silicon process are using GE products. He specifically states, "The primer examined here, GE Silicones SS 4179, is that which is recommended for the preparation of an acrylic sheet surface for the GE Silicones sealants SCS 1000 and 1200 by the manufacturer (GE Silicones 2000a)"
I would not be so quick to discount the film adhesives. From what I recall in Juergen's article there are no major issues with the film adhesive used, correct? There is some delamination when kept at 55C or 131F for 20 days but in proper display conditions this is not going to be an issue. This was also written in 2001 and only examined one film adhesive manufacturer.
Miranda Smith makes some good points but if you look at her bio she is the only licensed Diasec provider in Australia. It makes sense that Diasec is the best option for her. $$
I believe there are tens of thousands more photographs mounted in museums, exhibitions and collections using film adhesives then silicone and there is no degradation to many of these pieces. Mirada states: "If the mounting has been applied using appropriate mounting techniques and manufacturing procedures, the bond will hold indefinitely." She then goes on to say that they will fail but does not present any evidence of this.
Best,
Patrick Allen
Ken Allen Studios