Yupo and Denril synthetic papers

I am looking for technical research or aging studies performed on
Yupo 100% polypropylene paper and Denril vellum drafting film.  I
would appreciate finding technical information including knowledge
of coatings, additives such as optical brighteners or plasticizers.

Susan Peckham
Paper Conservator


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                  Conservation DistList Instance 29:6
                   Distributed: Sunday, June 28, 2015
                        Message Id: cdl-29-6-014
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