Patent ID: 8663542

Claim:
A method for improving mechanical or physical properties of a thermoplastic resin composition, said composition comprising a combination of a first polyetheretherketone and a second polyetheretherketone which have a melt viscosity different from each other said method comprising adding or mixing the first polyetheretherketone with the second polyetheretherketone in a weight ratio of about 95:5 to 10:90 as a ratio of the former:the latter, and melt-kneading the resultant mixture, wherein the first polyetheretherketone has a melt viscosity of 150 to 1500 Pa·s at a temperature of 400° C. and a shear rate of 1216 s −1 , and the melt viscosity ratio of the first polyetheretherketone relative to the second polyetheretherketone at a temperature of 400° C. and a shear rate of 1216 s −1 is 1.5/1 to 10/1 as a ratio of the former/the latter.