For ivoroid and other cellulose nitrate based binding, Duco works fine - it's cellulose nitrate based, with acetone added, so essentially the same stuff as the binding, but in dilute form.

For ABS/Bolteron and vinyl, something with a combination of solvents such as Weld-On does a better job - Weld-On 16 uses a combination of methylene chloride, trichloroethane, and methyl methacrylate, so covers the bases on these plastics. FCA is similar, but a little easier to use. Not a fan of Duco for ABS, but it seems to hold. That said, I've reglued a lot of ABS and vinyl bindings on 60's-'80's Martins, and whatever they were using, I wish they'd have used something better.

Another solution for wood purfs and ivoroid/tortoise binding is Titebond or LMI White and acetone...as long as the ivoroid or tortoise is primed with acetone, the Titebond or LMI holds everything together. Does not work on ABS and vinyl, as acetone is not a good solvent for these plastics.

For the last few years, I've been using the LMI FCA if forced to work with plastic binding - great stuff, and holds rosewoods like coco as well as it does ABS. Expensive stuff, though.

I finally deduced, the Oatey cement is a plastics solvent and not a glue. It works by chemically melting 2 pieces of plastic then when the solvent flashes off, the plastic re-solidifies as one piece.