CA = CyanoAcrylate (ester). A cyanide-based ester as opposed to a carboxylic acid-based ester. Used in "Superglue," (methylmethacrylate ester) and "Dermabond" (skin/cell glue, octylmethacrylate, IIRC). Infamous in history for the deaths and injury of thousands in an industrial disaster in Bhopal, India back in the 1980s (?). Some cyanide gas was released from a plant where they made the adhesives based on CA and the rest is history.

Look for Paraloid B-72 (formerly known as Amyloid), if you can find it, I'm reading that this is the stuff for use on Ivory. Dissolved in acetone you use it just like "superglue".