公开(公告)号：US20210276233A1

公开(公告)日：2021-09-09

申请号：US17193738

申请日：2021-03-05

Applicant: LYONDELLBASELL ADVANCED POLYMERS INC.

Inventor： PETER J. GLENISTER ,  QUENTIN R. BOLL ,  PERRY J. BANTA ,  CHANGLAI YANG

IPC: B29C45/00 ,  C08L23/12

Abstract: Molded-in-color thermoplastic polyolefin (TPO) compositions useful for making automotive components, such as injection molded parts, as well as other articles of manufacture are described. The molded-in-color composition has a ΔE* value≤2.0 (compared to a painted color master), a gloss measured at 60° from about 76 to about 90 GU, a density ranging from about 0.9 to about 0.97 g/cm3, a melt mass flow rate from about 15 to about 40 g/10 min (ASTM D 1238, 230° C./2.16 kg), a flexural modulus between about 600 to about 2000 MPa, and an as-molded shrinkage between about 0.6% and about 1.4%. The compositions can be used to prepare molded-in-color components that can undergo additional clear coating steps as required by the automotive application. The clear coated molded-in-color components have a gloss measured at 20° from about 85 to about 95 GU and a gloss retention after mar between about 85% and about 93%.