• Patent Title: Thermoplastic polyurethane compounds exhibiting enhanced stain resistance
  • Application No.: US17420878
    Application Date: 2020-01-07
  • Publication No.: US12221539B2
    Publication Date: 2025-02-11
  • Inventor: Jiren Gu
  • Applicant: Avient Corporation
  • Applicant Address: US OH Avon Lake
  • Assignee: Avient Corporation
  • Current Assignee: Avient Corporation
  • Current Assignee Address: US OH Avon Lake
  • Agent Michael J. Sambrook; Emily E. Vlasek; David V. Monateri
  • International Application: PCT/US2020/012499 WO 20200107
  • International Announcement: WO2020/146323 WO 20200716
  • Main IPC: C08L75/06
  • IPC: C08L75/06 C08L75/08 B29C45/14 B29K75/00 B29K105/00
Thermoplastic polyurethane compounds exhibiting enhanced stain resistance
Abstract:
Thermoplastic articles are molded from thermoplastic polyurethane compounds including blends of aliphatic polycaprolactone thermoplastic polyurethane and aromatic thermoplastic polyurethane selected from aromatic polyester thermoplastic polyurethane, aromatic polyether thermoplastic polyurethane, and combinations thereof. The thermoplastic articles exhibit enhanced stain resistance, as represented by achieving a rating of 2 or better according to Blue Jean Abrasion Test, relative to thermoplastic articles molded from thermoplastic polyurethane compounds including either aromatic polyester thermoplastic polyurethane or aromatic polyether thermoplastic only, while also having good clarity (i.e., low haze) and other desirable properties. The thermoplastic articles can be especially useful as protective cases for handheld electronic devices.
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