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. 24, 2015
Filed:
Oct. 24, 2007
Applicant:
Richard Douglas Benson, Long Lake, MN (US);
Inventor:
Richard Douglas Benson, Long Lake, MN (US);
Assignee:
NatureWorks LLC, Minnetonka, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 63/08 (2006.01); C08L 67/04 (2006.01); B29C 47/00 (2006.01); B29C 51/00 (2006.01); B29C 51/02 (2006.01); B29C 47/88 (2006.01); B29K 67/00 (2006.01); C08L 25/14 (2006.01);
U.S. Cl.
CPC ...
C08L 67/04 (2013.01); B29C 47/0021 (2013.01); B29C 51/002 (2013.01); B29C 51/02 (2013.01); B29C 47/8815 (2013.01); B29K 2067/046 (2013.01); B29K 2995/0017 (2013.01); B29K 2995/004 (2013.01); B29K 2995/006 (2013.01); C08L 25/14 (2013.01); C08L 2205/02 (2013.01);
Abstract
Thermoformed PLA stereocomplex parts are made using a PLA stereocomplex composition having a highest crystallization melting temperature from 200 to 215° C. The stereocomplex composition preferably has less than 5 J/g of lower melting (160 to 190° C.) crystallites. The stereocomplex can be pre-annealed in various ways to reduce thermoforming cycle times. The stereocomplex forms parts with low haze and good thermal resistance, at reasonable cycle times.