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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 12091517 B1

PDFFull Text
Date of Patent:
Sep. 17, 2024

Filed:

Nov. 29, 2017

Composition and films comprising polylactic acid polymer and copolymer comprising long chain alkyl moiety

Applicant:

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

Inventors:

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

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

Jacob D. Young, St. Paul, MN (US);

Ramesh C. Kumar, Woodbury, MN (US);

Sonja S. Mackey, St. Paul, MN (US);

Kanta Kumar, Woodbury, MN (US);

Adam R. Wohl, Mahtomedi, MN (US);

David J. Kinning, Woodbury, MN (US);

Michael D. Crandall, Sparks, NV (US);

Ignatius A. Kadoma, Cottage Grove, MN (US);

Assignee:

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

Attorney:

Carolyn A. Fischer

Primary Examiner:

Vivian Chen

Int. Cl.
CPC ...
C08J 5/18 (2006.01); B29C 33/68 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/21 (2019.01); B29C 55/16 (2006.01); B29K 67/00 (2006.01); B32B 7/06 (2019.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/18 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); C08L 67/04 (2006.01); C08L 67/06 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B29C 33/68 (2013.01); B32B 7/06 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/36 (2013.01); C08L 67/04 (2013.01); C08L 67/06 (2013.01); B29C 48/0018 (2019.02); B29C 48/08 (2019.02); B29C 48/21 (2019.02); B29C 55/16 (2013.01); B29K 2067/046 (2013.01); B29K 2995/0053 (2013.01); B32B 27/18 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 2250/02 (2013.01); B32B 2367/00 (2013.01); B32B 2405/00 (2013.01); C08J 2367/04 (2013.01); C08J 2423/08 (2013.01); C08J 2429/04 (2013.01); C08J 2433/06 (2013.01); Y10T 428/14 (2015.01); Y10T 428/1452 (2015.01); Y10T 428/1476 (2015.01); Y10T 428/31786 (2015.04);
Abstract

Compositions and films are described comprising a polylactic (PLA) polymer and a copolymer comprising a first moiety comprising a C12-C30 alkyl group and a second moiety that is miscible in the composition. Suitable first moieties include a C12-C30 alkyl (meth)acrylate or a polyvinyl alcohol comprising pendent C12-C30 alkyl groups. Suitable second moieties include C1-C10 (meth)acrylic acid or ester thereof, vinyl acetate and ethylene vinyl acetate. The aforementioned composition may be used to form a release layer of an adhesive article such as a pressure sensitive adhesive tape. The films may be a monolithic film or a film layer of a multilayer film. The release layer may be disposed upon a substrate layer that may also comprise PLA. The films are produced by melt extrusion of the aforementioned composition and may be oriented.

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