Patent ID: 8449801

Claim:
A method for preparing a near-infrared shielding masterbatch, comprising the steps of: providing a composition comprising: at least one metallic ionic compound powder in an amount of about 1 wt % to about 25 wt %, wherein the metallic ionic compound powder is selected from a group consisting of barium sulfate powder, ferrous oxide powder, copper oxide powder, iridium dioxide powder, zinc oxide powder and combinations thereof; a cross-linking agent in an amount of about 0.1 wt % to about 2 wt %; a thermoplastic polymer in an amount of about 67 wt % to about 98.7 wt %; an cross-linking initiator in an amount of about 0.1 wt % to about 1 wt %; and a dispersing agent in an amount of about 0.1 wt % to about 2 wt %; compounding the composition at a compounding temperature of about 220-270° C. for about 1 minute to about 20 minutes; and pelletizing the compounded composition to obtain the near-infrared shielding masterbatch.