Patent ID: 8158715

Claim:
A binder resin solution composition comprising: (a) a resin obtained by mixing a chlorinated polyolefin (I) obtained by chlorinating to a chlorine content of 10 to 40% by weight an isotactic polypropylene polymer produced in the presence of a metallocene catalyst, said isotactic polypropylene polymer having a molecular weight distribution of 3 or lower and a melting point as measured with a differential scanning calorimeter of 110 to 140° C., with a carboxyl-containing chlorinated polyolefin (II) obtained by chlorinating to a chlorine content of 10 to 40% by weight a carboxyl-containing polyolefin obtained by grafting 1 to 10% by weight at least one unsaturated carboxylic acid monomer selected from a carboxylic acid and a carboxylic acid anhydride onto an isotactic polypropylene polymer produced with a titanium catalyst in a weight ratio (I)/(II) of from 5/95 to 50/50; and (b) an organic solvent, wherein said composition has a solid concentration of 10 to 50% by weight.