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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.:

US 11254812 B1

PDFFull Text
Date of Patent:
Feb. 22, 2022

Filed:

Jan. 21, 2020

Compositions and films comprising polylactic acid polymer, polyvinyl acetate polymer and plasticizer

Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventors:

Ning Zhou, Vadnais Heights, MN (US);

Robert S. Clough, St. Paul, MN (US);

Derek J. Dehn, Maplewood, MN (US);

Jeffrey P. Kalish, St. Paul, MN (US);

William W. Merrill, Mahtomedi, MN (US);

Kevin M. Lewandowski, Inver Grove Heights, MN (US);

Jayant Chakravarty, Woodbury, MN (US);

Assignee:

3M Innovative Properties Company, St. Paul, MN (US);

Attorney:

Carolyn A. Fischer

Primary Examiner:

Vivian Chen

Int. Cl.
CPC ...
C08L 31/04 (2006.01); C08L 67/04 (2006.01); C09J 7/25 (2018.01); C08K 5/103 (2006.01); C08K 5/11 (2006.01); C09J 7/24 (2018.01); B32B 7/12 (2006.01); B32B 27/30 (2006.01); C08J 5/18 (2006.01); B32B 27/18 (2006.01); B32B 7/04 (2019.01); B32B 27/22 (2006.01); B32B 27/08 (2006.01); B32B 27/36 (2006.01); C08K 5/09 (2006.01); C09J 7/20 (2018.01); C08K 5/10 (2006.01); C08K 5/098 (2006.01); C08K 3/01 (2018.01); C08K 5/00 (2006.01); C09J 133/26 (2006.01);
U.S. Cl.
CPC ...
C08L 31/04 (2013.01); B32B 7/12 (2013.01); B32B 27/306 (2013.01); C08J 5/18 (2013.01); C08K 5/103 (2013.01); C08K 5/11 (2013.01); C08L 67/04 (2013.01); C09J 7/245 (2018.01); C09J 7/255 (2018.01); B32B 7/04 (2013.01); B32B 27/08 (2013.01); B32B 27/18 (2013.01); B32B 27/22 (2013.01); B32B 27/30 (2013.01); B32B 27/36 (2013.01); B32B 2250/02 (2013.01); B32B 2307/30 (2013.01); B32B 2307/50 (2013.01); B32B 2307/54 (2013.01); B32B 2307/702 (2013.01); B32B 2307/704 (2013.01); B32B 2333/00 (2013.01); B32B 2367/00 (2013.01); B32B 2405/00 (2013.01); C08J 2331/04 (2013.01); C08J 2367/04 (2013.01); C08J 2431/04 (2013.01); C08J 2467/04 (2013.01); C08K 3/01 (2018.01); C08K 5/0016 (2013.01); C08K 5/0083 (2013.01); C08K 5/09 (2013.01); C08K 5/098 (2013.01); C08K 5/10 (2013.01); C08L 2203/16 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/24 (2013.01); C09J 7/20 (2018.01); C09J 133/26 (2013.01); C09J 2301/302 (2020.08); C09J 2431/00 (2013.01); C09J 2431/005 (2013.01); C09J 2431/006 (2013.01); C09J 2433/00 (2013.01); C09J 2467/00 (2013.01); C09J 2467/006 (2013.01); Y10T 428/31786 (2015.04); Y10T 428/31928 (2015.04);
Abstract

A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

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