The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2023
Filed:
Aug. 21, 2019
Applicant:
Natureworks Llc, Minnetonka, MN (US);
Inventors:
Nemat Hossieny, Medina, MN (US);
Manuel A. W. Natal, Eden Prairie, MN (US);
Assignee:
NatureWorks LLC, Plymouth, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/32 (2006.01); C08J 9/12 (2006.01); C08J 9/232 (2006.01); C08J 9/00 (2006.01);
U.S. Cl.
CPC ...
C08J 9/232 (2013.01); C08J 9/0061 (2013.01); C08J 9/122 (2013.01); C08J 2203/06 (2013.01); C08J 2367/04 (2013.01);
Abstract
Expanded poly(lactide) (PLA) beads are made by pressurizing PLA beads with carbon dioxide at approximately room temperature, heating the beads under pressure to 90 to 160 C to saturate and partially crystallize the beads, and then depressurizing and cooling the beads. The PLA beads contain a blend of PLLA and PDLA in certain ratios. The beads are useful for making expanded bead foam.