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Re: Lexan/polycarbonate vs acrylic
"Plastics" would include PTFE and polyethylene, both notoriously hard to bond to. Adhesives which form a strong and permanent bond to plastic glazing materials, which may be styrene, acrylic, or polycarbonate, usually say so in express terms.
Considering the price of a phone call versus the price of a failed glazing job, I'd call the maker rather than wait for it to fail, and then have my lawyer call their lawyer about the definition of the term "plastics".