公开(公告)号：US11904515B2

公开(公告)日：2024-02-20

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: C08L23/12 ,  B29C45/00 ,  B29K23/00 ,  B29K503/08

CPC classification number: B29C45/0001 ,  B29C45/0013 ,  B29C45/0053 ,  C08L23/12 ,  B29C2045/0079 ,  B29K2023/12 ,  B29K2023/16 ,  B29K2023/18 ,  B29K2503/08 ,  B29K2995/002 ,  B29K2995/0022 ,  B29K2995/0063 ,  B29K2995/0077 ,  B29K2995/0082 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/08

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%.