Methyl methacrylate

As some people misunderstood my question about MMA, I would like to
define it more exactly: I'm searching for an adhesive based on
methyl methacrylate-monomer, which can be cold-cured by
activator/starter system. This means a two component system, which
cures with minimal shrinkage. It should be used for the reassembly
of broken stone objects in museum environment. Problems of the
available adhesives are:

    *   they contain bifunctional acrylate groups--this leads to
        crosslinked adhesives that can not be softened by organic
        solvents or heat after curing

    *   they contain plasticizers like phthalates, which are unwanted
        in resins for art conservation

Now I'm searching for products without these components.

Olaf Pung
Conservation of Stone Objects
Fachhochschule Hildesheim, Germany

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                  Conservation DistList Instance 13:9
                  Distributed: Thursday, July 22, 1999
                        Message Id: cdl-13-9-008
                                  ***