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:
Feb. 19, 2019
Filed:
Jun. 28, 2016
Applicant:
Natureworks Llc, Minnetonka, MN (US);
Inventors:
Chad Henry Kamann, Carver, MN (US);
Robert A. Green, Raleigh, NC (US);
Assignee:
NatureWorks LLC, Minnetonka, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 6/62 (2006.01); D01F 6/92 (2006.01); C08L 67/04 (2006.01); C09K 8/44 (2006.01); C09K 8/56 (2006.01); C09K 8/62 (2006.01); C09K 8/70 (2006.01); C09K 8/80 (2006.01); C09K 8/467 (2006.01); E21B 43/26 (2006.01); A01G 13/02 (2006.01);
U.S. Cl.
CPC ...
D01F 6/92 (2013.01); A01G 13/0275 (2013.01); C08L 67/04 (2013.01); C09K 8/44 (2013.01); C09K 8/467 (2013.01); C09K 8/56 (2013.01); C09K 8/62 (2013.01); C09K 8/70 (2013.01); C09K 8/80 (2013.01); D01F 6/625 (2013.01); E21B 43/26 (2013.01); C09K 2208/08 (2013.01); D10B 2331/041 (2013.01); D10B 2505/18 (2013.01);
Abstract
Polylactide fibers are made from a blend of polylactides. One of the polylactides has a ratio of R-lactic and S-lactic units from 8:92 to 92:8. The second polylactide has a ratio of the R-lactic and S-lactic units of ≥97:3 or ≤3:97. The ratio of the R-lactic units to S-lactic units in the blend is from 7:93 to 25:75 or from 75:25 to 93:7. The polylactide fiber contains at least 5 Joules of polylactide crystallites per gram of polylactide resin in the fiber.