| http://www.w3.org/ns/prov#value | - A fourth aspect of the present invention is a method of making the multi-layer microporous film including the steps of: (a) forming a first porous layer composition by melt blending to form a solution containing: (i) about 15 to 80 parts by weight, based on total polymer content, of a first polymer component having a melting point greater than 140??? C., (ii) about 15 to 80 parts by weight, based
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