ALTHOUGH poly-+-xylylene has been extensively investigated on account of its high thermal stability, most of the work was done with polymers prepared by the pyrolysis of+- xylene. Such polymers are sparingly soluble in organic solvents, owing lp 2 to slight cross- linking of the essentially linear chains, and other syntheses 3, 4 lead to more readily soluble products. The pyrolytic method is available for the preparation of related polymers, but ...
