Polymer-based resin compositions derived from cellulose and articles made using these compositions

US11655309B2 · kind B2 · utility

Assignee

• Eastman Chemical Company · US

Inventors

• Wenlai Feng · Johnson City, US
• Haining An · Kingsport, US
• Michael Eugene Donelson · Kingsport, US
• Thomas Joseph Pecorini · Kingsport, US
• Robert Ellis McCrary · Kingsport, US
• Douglas Weldon Carico · Kingsport, US
• Spencer Allen Gilliam · Big Stone Gap, US

Key dates

• Filing date: Nov 9, 2017
• Grant date: May 23, 2023
• Expiry date: Sep 23, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A shaped article comprising a polymer-based resin derived from cellulose, wherein the polymer-based resin has an HDT of at least 95° C., a bio-derived content of at least 20 wt %, a notched izod impact strength of greater than 80 J/m and at least one of the following properties chosen from: flexural modulus of greater than 1900 MPa; a spiral flow length or at least 3.0 cm; a flex creep deflection of less than 12 mm; a transmission of at least 70%; a ΔE value of less than 25; or an L* color of at least 85.