Grafting fluorinated polymers with organic metal salts, giving improved adhesion to other materials, e.g. in production of liquid storage tanks, obtained by irradiating shaped mixture of polymer and salt

摘要

A method for grafting an organic metal salt (I) onto a fluorinated polymer (A) involves: (a) mixing molten (A) with (I); (b) shaping the mixture to give films, plates, granules or powder; (c) irradiating with photon (gamma ) or electron (beta ) radiation in the absence of air at a dose of 0.5-15 (especially 0.5-3) Mrad; and (d) optionally removing at least part of (I) not grafted onto (A). Independent claims are included for: (1) structures comprising at least one layer of the (I)-grafted (A) product and at least one layer of other material (B); and (2) bulk-grafted fluorinated polymers (A').